CVE-2024-49903 (GCVE-0-2024-49903)

Vulnerability from cvelistv5 – Published: 2024-10-21 18:01 – Updated: 2026-01-05 10:54
VLAI?
Title
jfs: Fix uaf in dbFreeBits
Summary
In the Linux kernel, the following vulnerability has been resolved: jfs: Fix uaf in dbFreeBits [syzbot reported] ================================================================== BUG: KASAN: slab-use-after-free in __mutex_lock_common kernel/locking/mutex.c:587 [inline] BUG: KASAN: slab-use-after-free in __mutex_lock+0xfe/0xd70 kernel/locking/mutex.c:752 Read of size 8 at addr ffff8880229254b0 by task syz-executor357/5216 CPU: 0 UID: 0 PID: 5216 Comm: syz-executor357 Not tainted 6.11.0-rc3-syzkaller-00156-gd7a5aa4b3c00 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 __mutex_lock_common kernel/locking/mutex.c:587 [inline] __mutex_lock+0xfe/0xd70 kernel/locking/mutex.c:752 dbFreeBits+0x7ea/0xd90 fs/jfs/jfs_dmap.c:2390 dbFreeDmap fs/jfs/jfs_dmap.c:2089 [inline] dbFree+0x35b/0x680 fs/jfs/jfs_dmap.c:409 dbDiscardAG+0x8a9/0xa20 fs/jfs/jfs_dmap.c:1650 jfs_ioc_trim+0x433/0x670 fs/jfs/jfs_discard.c:100 jfs_ioctl+0x2d0/0x3e0 fs/jfs/ioctl.c:131 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 Freed by task 5218: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2252 [inline] slab_free mm/slub.c:4473 [inline] kfree+0x149/0x360 mm/slub.c:4594 dbUnmount+0x11d/0x190 fs/jfs/jfs_dmap.c:278 jfs_mount_rw+0x4ac/0x6a0 fs/jfs/jfs_mount.c:247 jfs_remount+0x3d1/0x6b0 fs/jfs/super.c:454 reconfigure_super+0x445/0x880 fs/super.c:1083 vfs_cmd_reconfigure fs/fsopen.c:263 [inline] vfs_fsconfig_locked fs/fsopen.c:292 [inline] __do_sys_fsconfig fs/fsopen.c:473 [inline] __se_sys_fsconfig+0xb6e/0xf80 fs/fsopen.c:345 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f [Analysis] There are two paths (dbUnmount and jfs_ioc_trim) that generate race condition when accessing bmap, which leads to the occurrence of uaf. Use the lock s_umount to synchronize them, in order to avoid uaf caused by race condition.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < 4ac58f7734937f3249da734ede946dfb3b1af5e4 (git)
Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < 3126ccde51f51b0648c8cdccaf916e8bd062e972 (git)
Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < fd026b6b6758d5569705c02540b40f3bbf822b9a (git)
Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < e7ae14f7ee76c6ef5a48aebab1a278ad78f42619 (git)
Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < 0c238da83f56bb895cab1e5851d034ac45b158d1 (git)
Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < 4218b31ecc7af7e191768d32e32ed4386d8f9b76 (git)
Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < a9603a6f75df2fd8125cd208c98cfaa0fe3f7505 (git)
Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < 95accb7183badca387f7a8d19a2475cf3089f148 (git)
Affected: b40c2e665cd552eae5fbdbb878bc29a34357668e , < d6c1b3599b2feb5c7291f5ac3a36e5fa7cedb234 (git)
Create a notification for this product.
    Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 4.19.323 , ≤ 4.19.* (semver)
Unaffected: 5.4.285 , ≤ 5.4.* (semver)
Unaffected: 5.10.227 , ≤ 5.10.* (semver)
Unaffected: 5.15.168 , ≤ 5.15.* (semver)
Unaffected: 6.1.113 , ≤ 6.1.* (semver)
Unaffected: 6.6.55 , ≤ 6.6.* (semver)
Unaffected: 6.10.14 , ≤ 6.10.* (semver)
Unaffected: 6.11.3 , ≤ 6.11.* (semver)
Unaffected: 6.12 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-49903",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-22T13:42:37.771677Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-22T13:48:47.346Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T22:23:05.835Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/jfs/jfs_discard.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4ac58f7734937f3249da734ede946dfb3b1af5e4",
              "status": "affected",
              "version": "b40c2e665cd552eae5fbdbb878bc29a34357668e",
              "versionType": "git"
            },
            {
              "lessThan": "3126ccde51f51b0648c8cdccaf916e8bd062e972",
              "status": "affected",
              "version": "b40c2e665cd552eae5fbdbb878bc29a34357668e",
              "versionType": "git"
            },
            {
              "lessThan": "fd026b6b6758d5569705c02540b40f3bbf822b9a",
              "status": "affected",
              "version": "b40c2e665cd552eae5fbdbb878bc29a34357668e",
              "versionType": "git"
            },
            {
              "lessThan": "e7ae14f7ee76c6ef5a48aebab1a278ad78f42619",
              "status": "affected",
              "version": "b40c2e665cd552eae5fbdbb878bc29a34357668e",
              "versionType": "git"
            },
            {
              "lessThan": "0c238da83f56bb895cab1e5851d034ac45b158d1",
              "status": "affected",
              "version": "b40c2e665cd552eae5fbdbb878bc29a34357668e",
              "versionType": "git"
            },
            {
              "lessThan": "4218b31ecc7af7e191768d32e32ed4386d8f9b76",
              "status": "affected",
              "version": "b40c2e665cd552eae5fbdbb878bc29a34357668e",
              "versionType": "git"
            },
            {
              "lessThan": "a9603a6f75df2fd8125cd208c98cfaa0fe3f7505",
              "status": "affected",
              "version": "b40c2e665cd552eae5fbdbb878bc29a34357668e",
              "versionType": "git"
            },
            {
              "lessThan": "95accb7183badca387f7a8d19a2475cf3089f148",
              "status": "affected",
              "version": "b40c2e665cd552eae5fbdbb878bc29a34357668e",
              "versionType": "git"
            },
            {
              "lessThan": "d6c1b3599b2feb5c7291f5ac3a36e5fa7cedb234",
              "status": "affected",
              "version": "b40c2e665cd552eae5fbdbb878bc29a34357668e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/jfs/jfs_discard.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.7"
            },
            {
              "lessThan": "3.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.323",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.285",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.227",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.168",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.113",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.55",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.323",
                  "versionStartIncluding": "3.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.285",
                  "versionStartIncluding": "3.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.227",
                  "versionStartIncluding": "3.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.168",
                  "versionStartIncluding": "3.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.113",
                  "versionStartIncluding": "3.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.55",
                  "versionStartIncluding": "3.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10.14",
                  "versionStartIncluding": "3.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.3",
                  "versionStartIncluding": "3.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "3.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njfs: Fix uaf in dbFreeBits\n\n[syzbot reported]\n==================================================================\nBUG: KASAN: slab-use-after-free in __mutex_lock_common kernel/locking/mutex.c:587 [inline]\nBUG: KASAN: slab-use-after-free in __mutex_lock+0xfe/0xd70 kernel/locking/mutex.c:752\nRead of size 8 at addr ffff8880229254b0 by task syz-executor357/5216\n\nCPU: 0 UID: 0 PID: 5216 Comm: syz-executor357 Not tainted 6.11.0-rc3-syzkaller-00156-gd7a5aa4b3c00 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024\nCall Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:93 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x169/0x550 mm/kasan/report.c:488\n kasan_report+0x143/0x180 mm/kasan/report.c:601\n __mutex_lock_common kernel/locking/mutex.c:587 [inline]\n __mutex_lock+0xfe/0xd70 kernel/locking/mutex.c:752\n dbFreeBits+0x7ea/0xd90 fs/jfs/jfs_dmap.c:2390\n dbFreeDmap fs/jfs/jfs_dmap.c:2089 [inline]\n dbFree+0x35b/0x680 fs/jfs/jfs_dmap.c:409\n dbDiscardAG+0x8a9/0xa20 fs/jfs/jfs_dmap.c:1650\n jfs_ioc_trim+0x433/0x670 fs/jfs/jfs_discard.c:100\n jfs_ioctl+0x2d0/0x3e0 fs/jfs/ioctl.c:131\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:907 [inline]\n __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n\nFreed by task 5218:\n kasan_save_stack mm/kasan/common.c:47 [inline]\n kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\n kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579\n poison_slab_object+0xe0/0x150 mm/kasan/common.c:240\n __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256\n kasan_slab_free include/linux/kasan.h:184 [inline]\n slab_free_hook mm/slub.c:2252 [inline]\n slab_free mm/slub.c:4473 [inline]\n kfree+0x149/0x360 mm/slub.c:4594\n dbUnmount+0x11d/0x190 fs/jfs/jfs_dmap.c:278\n jfs_mount_rw+0x4ac/0x6a0 fs/jfs/jfs_mount.c:247\n jfs_remount+0x3d1/0x6b0 fs/jfs/super.c:454\n reconfigure_super+0x445/0x880 fs/super.c:1083\n vfs_cmd_reconfigure fs/fsopen.c:263 [inline]\n vfs_fsconfig_locked fs/fsopen.c:292 [inline]\n __do_sys_fsconfig fs/fsopen.c:473 [inline]\n __se_sys_fsconfig+0xb6e/0xf80 fs/fsopen.c:345\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n\n[Analysis]\nThere are two paths (dbUnmount and jfs_ioc_trim) that generate race\ncondition when accessing bmap, which leads to the occurrence of uaf.\n\nUse the lock s_umount to synchronize them, in order to avoid uaf caused\nby race condition."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-05T10:54:19.767Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4ac58f7734937f3249da734ede946dfb3b1af5e4"
        },
        {
          "url": "https://git.kernel.org/stable/c/3126ccde51f51b0648c8cdccaf916e8bd062e972"
        },
        {
          "url": "https://git.kernel.org/stable/c/fd026b6b6758d5569705c02540b40f3bbf822b9a"
        },
        {
          "url": "https://git.kernel.org/stable/c/e7ae14f7ee76c6ef5a48aebab1a278ad78f42619"
        },
        {
          "url": "https://git.kernel.org/stable/c/0c238da83f56bb895cab1e5851d034ac45b158d1"
        },
        {
          "url": "https://git.kernel.org/stable/c/4218b31ecc7af7e191768d32e32ed4386d8f9b76"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9603a6f75df2fd8125cd208c98cfaa0fe3f7505"
        },
        {
          "url": "https://git.kernel.org/stable/c/95accb7183badca387f7a8d19a2475cf3089f148"
        },
        {
          "url": "https://git.kernel.org/stable/c/d6c1b3599b2feb5c7291f5ac3a36e5fa7cedb234"
        }
      ],
      "title": "jfs: Fix uaf in dbFreeBits",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-49903",
    "datePublished": "2024-10-21T18:01:34.603Z",
    "dateReserved": "2024-10-21T12:17:06.027Z",
    "dateUpdated": "2026-01-05T10:54:19.767Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:23:05.835Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-49903\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T13:42:37.771677Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T13:42:41.244Z\"}}], \"cna\": {\"title\": \"jfs: Fix uaf in dbFreeBits\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"b40c2e665cd552eae5fbdbb878bc29a34357668e\", \"lessThan\": \"4ac58f7734937f3249da734ede946dfb3b1af5e4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b40c2e665cd552eae5fbdbb878bc29a34357668e\", \"lessThan\": \"3126ccde51f51b0648c8cdccaf916e8bd062e972\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b40c2e665cd552eae5fbdbb878bc29a34357668e\", \"lessThan\": \"fd026b6b6758d5569705c02540b40f3bbf822b9a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b40c2e665cd552eae5fbdbb878bc29a34357668e\", \"lessThan\": \"e7ae14f7ee76c6ef5a48aebab1a278ad78f42619\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b40c2e665cd552eae5fbdbb878bc29a34357668e\", \"lessThan\": \"0c238da83f56bb895cab1e5851d034ac45b158d1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b40c2e665cd552eae5fbdbb878bc29a34357668e\", \"lessThan\": \"4218b31ecc7af7e191768d32e32ed4386d8f9b76\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b40c2e665cd552eae5fbdbb878bc29a34357668e\", \"lessThan\": \"a9603a6f75df2fd8125cd208c98cfaa0fe3f7505\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b40c2e665cd552eae5fbdbb878bc29a34357668e\", \"lessThan\": \"95accb7183badca387f7a8d19a2475cf3089f148\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"b40c2e665cd552eae5fbdbb878bc29a34357668e\", \"lessThan\": \"d6c1b3599b2feb5c7291f5ac3a36e5fa7cedb234\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/jfs/jfs_discard.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.7\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.7\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.323\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.285\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.227\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.168\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.113\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.55\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.14\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.3\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/jfs/jfs_discard.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/4ac58f7734937f3249da734ede946dfb3b1af5e4\"}, {\"url\": \"https://git.kernel.org/stable/c/3126ccde51f51b0648c8cdccaf916e8bd062e972\"}, {\"url\": \"https://git.kernel.org/stable/c/fd026b6b6758d5569705c02540b40f3bbf822b9a\"}, {\"url\": \"https://git.kernel.org/stable/c/e7ae14f7ee76c6ef5a48aebab1a278ad78f42619\"}, {\"url\": \"https://git.kernel.org/stable/c/0c238da83f56bb895cab1e5851d034ac45b158d1\"}, {\"url\": \"https://git.kernel.org/stable/c/4218b31ecc7af7e191768d32e32ed4386d8f9b76\"}, {\"url\": \"https://git.kernel.org/stable/c/a9603a6f75df2fd8125cd208c98cfaa0fe3f7505\"}, {\"url\": \"https://git.kernel.org/stable/c/95accb7183badca387f7a8d19a2475cf3089f148\"}, {\"url\": \"https://git.kernel.org/stable/c/d6c1b3599b2feb5c7291f5ac3a36e5fa7cedb234\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\njfs: Fix uaf in dbFreeBits\\n\\n[syzbot reported]\\n==================================================================\\nBUG: KASAN: slab-use-after-free in __mutex_lock_common kernel/locking/mutex.c:587 [inline]\\nBUG: KASAN: slab-use-after-free in __mutex_lock+0xfe/0xd70 kernel/locking/mutex.c:752\\nRead of size 8 at addr ffff8880229254b0 by task syz-executor357/5216\\n\\nCPU: 0 UID: 0 PID: 5216 Comm: syz-executor357 Not tainted 6.11.0-rc3-syzkaller-00156-gd7a5aa4b3c00 #0\\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024\\nCall Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:93 [inline]\\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119\\n print_address_description mm/kasan/report.c:377 [inline]\\n print_report+0x169/0x550 mm/kasan/report.c:488\\n kasan_report+0x143/0x180 mm/kasan/report.c:601\\n __mutex_lock_common kernel/locking/mutex.c:587 [inline]\\n __mutex_lock+0xfe/0xd70 kernel/locking/mutex.c:752\\n dbFreeBits+0x7ea/0xd90 fs/jfs/jfs_dmap.c:2390\\n dbFreeDmap fs/jfs/jfs_dmap.c:2089 [inline]\\n dbFree+0x35b/0x680 fs/jfs/jfs_dmap.c:409\\n dbDiscardAG+0x8a9/0xa20 fs/jfs/jfs_dmap.c:1650\\n jfs_ioc_trim+0x433/0x670 fs/jfs/jfs_discard.c:100\\n jfs_ioctl+0x2d0/0x3e0 fs/jfs/ioctl.c:131\\n vfs_ioctl fs/ioctl.c:51 [inline]\\n __do_sys_ioctl fs/ioctl.c:907 [inline]\\n __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n\\nFreed by task 5218:\\n kasan_save_stack mm/kasan/common.c:47 [inline]\\n kasan_save_track+0x3f/0x80 mm/kasan/common.c:68\\n kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579\\n poison_slab_object+0xe0/0x150 mm/kasan/common.c:240\\n __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256\\n kasan_slab_free include/linux/kasan.h:184 [inline]\\n slab_free_hook mm/slub.c:2252 [inline]\\n slab_free mm/slub.c:4473 [inline]\\n kfree+0x149/0x360 mm/slub.c:4594\\n dbUnmount+0x11d/0x190 fs/jfs/jfs_dmap.c:278\\n jfs_mount_rw+0x4ac/0x6a0 fs/jfs/jfs_mount.c:247\\n jfs_remount+0x3d1/0x6b0 fs/jfs/super.c:454\\n reconfigure_super+0x445/0x880 fs/super.c:1083\\n vfs_cmd_reconfigure fs/fsopen.c:263 [inline]\\n vfs_fsconfig_locked fs/fsopen.c:292 [inline]\\n __do_sys_fsconfig fs/fsopen.c:473 [inline]\\n __se_sys_fsconfig+0xb6e/0xf80 fs/fsopen.c:345\\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\\n\\n[Analysis]\\nThere are two paths (dbUnmount and jfs_ioc_trim) that generate race\\ncondition when accessing bmap, which leads to the occurrence of uaf.\\n\\nUse the lock s_umount to synchronize them, in order to avoid uaf caused\\nby race condition.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.323\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.227\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.113\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.55\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.14\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.3\", \"versionStartIncluding\": \"3.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"3.7\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-01-05T10:54:19.767Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-49903\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-05T10:54:19.767Z\", \"dateReserved\": \"2024-10-21T12:17:06.027Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T18:01:34.603Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.