CVE-2024-47692 (GCVE-0-2024-47692)

Vulnerability from cvelistv5 – Published: 2024-10-21 11:53 – Updated: 2025-11-03 22:20
VLAI?
Title
nfsd: return -EINVAL when namelen is 0
Summary
In the Linux kernel, the following vulnerability has been resolved: nfsd: return -EINVAL when namelen is 0 When we have a corrupted main.sqlite in /var/lib/nfs/nfsdcld/, it may result in namelen being 0, which will cause memdup_user() to return ZERO_SIZE_PTR. When we access the name.data that has been assigned the value of ZERO_SIZE_PTR in nfs4_client_to_reclaim(), null pointer dereference is triggered. [ T1205] ================================================================== [ T1205] BUG: KASAN: null-ptr-deref in nfs4_client_to_reclaim+0xe9/0x260 [ T1205] Read of size 1 at addr 0000000000000010 by task nfsdcld/1205 [ T1205] [ T1205] CPU: 11 PID: 1205 Comm: nfsdcld Not tainted 5.10.0-00003-g2c1423731b8d #406 [ T1205] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-buildvm-ppc64le-16.ppc.fedoraproject.org-3.fc31 04/01/2014 [ T1205] Call Trace: [ T1205] dump_stack+0x9a/0xd0 [ T1205] ? nfs4_client_to_reclaim+0xe9/0x260 [ T1205] __kasan_report.cold+0x34/0x84 [ T1205] ? nfs4_client_to_reclaim+0xe9/0x260 [ T1205] kasan_report+0x3a/0x50 [ T1205] nfs4_client_to_reclaim+0xe9/0x260 [ T1205] ? nfsd4_release_lockowner+0x410/0x410 [ T1205] cld_pipe_downcall+0x5ca/0x760 [ T1205] ? nfsd4_cld_tracking_exit+0x1d0/0x1d0 [ T1205] ? down_write_killable_nested+0x170/0x170 [ T1205] ? avc_policy_seqno+0x28/0x40 [ T1205] ? selinux_file_permission+0x1b4/0x1e0 [ T1205] rpc_pipe_write+0x84/0xb0 [ T1205] vfs_write+0x143/0x520 [ T1205] ksys_write+0xc9/0x170 [ T1205] ? __ia32_sys_read+0x50/0x50 [ T1205] ? ktime_get_coarse_real_ts64+0xfe/0x110 [ T1205] ? ktime_get_coarse_real_ts64+0xa2/0x110 [ T1205] do_syscall_64+0x33/0x40 [ T1205] entry_SYSCALL_64_after_hwframe+0x67/0xd1 [ T1205] RIP: 0033:0x7fdbdb761bc7 [ T1205] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 514 [ T1205] RSP: 002b:00007fff8c4b7248 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ T1205] RAX: ffffffffffffffda RBX: 000000000000042b RCX: 00007fdbdb761bc7 [ T1205] RDX: 000000000000042b RSI: 00007fff8c4b75f0 RDI: 0000000000000008 [ T1205] RBP: 00007fdbdb761bb0 R08: 0000000000000000 R09: 0000000000000001 [ T1205] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000042b [ T1205] R13: 0000000000000008 R14: 00007fff8c4b75f0 R15: 0000000000000000 [ T1205] ================================================================== Fix it by checking namelen.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 74725959c33c14114fdce1e36e3504d106584d53 , < 6d07040ae5c2214e39c7444d898039c9e655a79a (git)
Affected: 74725959c33c14114fdce1e36e3504d106584d53 , < 0f1d007bbea38a61cf9c5392708dc70ae9d84a3d (git)
Affected: 74725959c33c14114fdce1e36e3504d106584d53 , < b7b7a8df41ef18862dd6b22289fb46c2c12398af (git)
Affected: 74725959c33c14114fdce1e36e3504d106584d53 , < 84a563d136faf514fdad1ade28d7a142fd313cb8 (git)
Affected: 74725959c33c14114fdce1e36e3504d106584d53 , < 318f70857caab3da9a6ada9bc8c1f4f7591b695e (git)
Affected: 74725959c33c14114fdce1e36e3504d106584d53 , < 766d5fbd78f7a52b3888449a0358760477b74602 (git)
Affected: 74725959c33c14114fdce1e36e3504d106584d53 , < 1ff8be8d008b9ddc8e7043fbddd37d5d451b271b (git)
Affected: 74725959c33c14114fdce1e36e3504d106584d53 , < 22451a16b7ab7debefce660672566be887db1637 (git)
Create a notification for this product.
    Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (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: 6.6.54 , ≤ 6.6.* (semver)
Unaffected: 6.10.13 , ≤ 6.10.* (semver)
Unaffected: 6.11.2 , ≤ 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-2024-47692",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-21T13:05:46.297189Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-21T13:14:14.991Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T22:20:56.879Z",
          "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/nfsd/nfs4recover.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6d07040ae5c2214e39c7444d898039c9e655a79a",
              "status": "affected",
              "version": "74725959c33c14114fdce1e36e3504d106584d53",
              "versionType": "git"
            },
            {
              "lessThan": "0f1d007bbea38a61cf9c5392708dc70ae9d84a3d",
              "status": "affected",
              "version": "74725959c33c14114fdce1e36e3504d106584d53",
              "versionType": "git"
            },
            {
              "lessThan": "b7b7a8df41ef18862dd6b22289fb46c2c12398af",
              "status": "affected",
              "version": "74725959c33c14114fdce1e36e3504d106584d53",
              "versionType": "git"
            },
            {
              "lessThan": "84a563d136faf514fdad1ade28d7a142fd313cb8",
              "status": "affected",
              "version": "74725959c33c14114fdce1e36e3504d106584d53",
              "versionType": "git"
            },
            {
              "lessThan": "318f70857caab3da9a6ada9bc8c1f4f7591b695e",
              "status": "affected",
              "version": "74725959c33c14114fdce1e36e3504d106584d53",
              "versionType": "git"
            },
            {
              "lessThan": "766d5fbd78f7a52b3888449a0358760477b74602",
              "status": "affected",
              "version": "74725959c33c14114fdce1e36e3504d106584d53",
              "versionType": "git"
            },
            {
              "lessThan": "1ff8be8d008b9ddc8e7043fbddd37d5d451b271b",
              "status": "affected",
              "version": "74725959c33c14114fdce1e36e3504d106584d53",
              "versionType": "git"
            },
            {
              "lessThan": "22451a16b7ab7debefce660672566be887db1637",
              "status": "affected",
              "version": "74725959c33c14114fdce1e36e3504d106584d53",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/nfsd/nfs4recover.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "lessThan": "5.2",
              "status": "unaffected",
              "version": "0",
              "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": "6.6.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.2",
              "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": "5.4.285",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.227",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.168",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.113",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.54",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.10.13",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.2",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: return -EINVAL when namelen is 0\n\nWhen we have a corrupted main.sqlite in /var/lib/nfs/nfsdcld/, it may\nresult in namelen being 0, which will cause memdup_user() to return\nZERO_SIZE_PTR.\nWhen we access the name.data that has been assigned the value of\nZERO_SIZE_PTR in nfs4_client_to_reclaim(), null pointer dereference is\ntriggered.\n\n[ T1205] ==================================================================\n[ T1205] BUG: KASAN: null-ptr-deref in nfs4_client_to_reclaim+0xe9/0x260\n[ T1205] Read of size 1 at addr 0000000000000010 by task nfsdcld/1205\n[ T1205]\n[ T1205] CPU: 11 PID: 1205 Comm: nfsdcld Not tainted 5.10.0-00003-g2c1423731b8d #406\n[ T1205] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-buildvm-ppc64le-16.ppc.fedoraproject.org-3.fc31 04/01/2014\n[ T1205] Call Trace:\n[ T1205]  dump_stack+0x9a/0xd0\n[ T1205]  ? nfs4_client_to_reclaim+0xe9/0x260\n[ T1205]  __kasan_report.cold+0x34/0x84\n[ T1205]  ? nfs4_client_to_reclaim+0xe9/0x260\n[ T1205]  kasan_report+0x3a/0x50\n[ T1205]  nfs4_client_to_reclaim+0xe9/0x260\n[ T1205]  ? nfsd4_release_lockowner+0x410/0x410\n[ T1205]  cld_pipe_downcall+0x5ca/0x760\n[ T1205]  ? nfsd4_cld_tracking_exit+0x1d0/0x1d0\n[ T1205]  ? down_write_killable_nested+0x170/0x170\n[ T1205]  ? avc_policy_seqno+0x28/0x40\n[ T1205]  ? selinux_file_permission+0x1b4/0x1e0\n[ T1205]  rpc_pipe_write+0x84/0xb0\n[ T1205]  vfs_write+0x143/0x520\n[ T1205]  ksys_write+0xc9/0x170\n[ T1205]  ? __ia32_sys_read+0x50/0x50\n[ T1205]  ? ktime_get_coarse_real_ts64+0xfe/0x110\n[ T1205]  ? ktime_get_coarse_real_ts64+0xa2/0x110\n[ T1205]  do_syscall_64+0x33/0x40\n[ T1205]  entry_SYSCALL_64_after_hwframe+0x67/0xd1\n[ T1205] RIP: 0033:0x7fdbdb761bc7\n[ T1205] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 514\n[ T1205] RSP: 002b:00007fff8c4b7248 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\n[ T1205] RAX: ffffffffffffffda RBX: 000000000000042b RCX: 00007fdbdb761bc7\n[ T1205] RDX: 000000000000042b RSI: 00007fff8c4b75f0 RDI: 0000000000000008\n[ T1205] RBP: 00007fdbdb761bb0 R08: 0000000000000000 R09: 0000000000000001\n[ T1205] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000042b\n[ T1205] R13: 0000000000000008 R14: 00007fff8c4b75f0 R15: 0000000000000000\n[ T1205] ==================================================================\n\nFix it by checking namelen."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-04T09:37:29.902Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6d07040ae5c2214e39c7444d898039c9e655a79a"
        },
        {
          "url": "https://git.kernel.org/stable/c/0f1d007bbea38a61cf9c5392708dc70ae9d84a3d"
        },
        {
          "url": "https://git.kernel.org/stable/c/b7b7a8df41ef18862dd6b22289fb46c2c12398af"
        },
        {
          "url": "https://git.kernel.org/stable/c/84a563d136faf514fdad1ade28d7a142fd313cb8"
        },
        {
          "url": "https://git.kernel.org/stable/c/318f70857caab3da9a6ada9bc8c1f4f7591b695e"
        },
        {
          "url": "https://git.kernel.org/stable/c/766d5fbd78f7a52b3888449a0358760477b74602"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ff8be8d008b9ddc8e7043fbddd37d5d451b271b"
        },
        {
          "url": "https://git.kernel.org/stable/c/22451a16b7ab7debefce660672566be887db1637"
        }
      ],
      "title": "nfsd: return -EINVAL when namelen is 0",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-47692",
    "datePublished": "2024-10-21T11:53:31.238Z",
    "dateReserved": "2024-09-30T16:00:12.942Z",
    "dateUpdated": "2025-11-03T22:20:56.879Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-47692\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-21T13:05:46.297189Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-21T13:05:49.602Z\"}}], \"cna\": {\"title\": \"nfsd: return -EINVAL when namelen is 0\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"74725959c33c14114fdce1e36e3504d106584d53\", \"lessThan\": \"6d07040ae5c2214e39c7444d898039c9e655a79a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74725959c33c14114fdce1e36e3504d106584d53\", \"lessThan\": \"0f1d007bbea38a61cf9c5392708dc70ae9d84a3d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74725959c33c14114fdce1e36e3504d106584d53\", \"lessThan\": \"b7b7a8df41ef18862dd6b22289fb46c2c12398af\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74725959c33c14114fdce1e36e3504d106584d53\", \"lessThan\": \"84a563d136faf514fdad1ade28d7a142fd313cb8\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74725959c33c14114fdce1e36e3504d106584d53\", \"lessThan\": \"318f70857caab3da9a6ada9bc8c1f4f7591b695e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74725959c33c14114fdce1e36e3504d106584d53\", \"lessThan\": \"766d5fbd78f7a52b3888449a0358760477b74602\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74725959c33c14114fdce1e36e3504d106584d53\", \"lessThan\": \"1ff8be8d008b9ddc8e7043fbddd37d5d451b271b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"74725959c33c14114fdce1e36e3504d106584d53\", \"lessThan\": \"22451a16b7ab7debefce660672566be887db1637\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/nfsd/nfs4recover.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.2\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.2\", \"versionType\": \"semver\"}, {\"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\": \"6.6.54\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/nfsd/nfs4recover.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/6d07040ae5c2214e39c7444d898039c9e655a79a\"}, {\"url\": \"https://git.kernel.org/stable/c/0f1d007bbea38a61cf9c5392708dc70ae9d84a3d\"}, {\"url\": \"https://git.kernel.org/stable/c/b7b7a8df41ef18862dd6b22289fb46c2c12398af\"}, {\"url\": \"https://git.kernel.org/stable/c/84a563d136faf514fdad1ade28d7a142fd313cb8\"}, {\"url\": \"https://git.kernel.org/stable/c/318f70857caab3da9a6ada9bc8c1f4f7591b695e\"}, {\"url\": \"https://git.kernel.org/stable/c/766d5fbd78f7a52b3888449a0358760477b74602\"}, {\"url\": \"https://git.kernel.org/stable/c/1ff8be8d008b9ddc8e7043fbddd37d5d451b271b\"}, {\"url\": \"https://git.kernel.org/stable/c/22451a16b7ab7debefce660672566be887db1637\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnfsd: return -EINVAL when namelen is 0\\n\\nWhen we have a corrupted main.sqlite in /var/lib/nfs/nfsdcld/, it may\\nresult in namelen being 0, which will cause memdup_user() to return\\nZERO_SIZE_PTR.\\nWhen we access the name.data that has been assigned the value of\\nZERO_SIZE_PTR in nfs4_client_to_reclaim(), null pointer dereference is\\ntriggered.\\n\\n[ T1205] ==================================================================\\n[ T1205] BUG: KASAN: null-ptr-deref in nfs4_client_to_reclaim+0xe9/0x260\\n[ T1205] Read of size 1 at addr 0000000000000010 by task nfsdcld/1205\\n[ T1205]\\n[ T1205] CPU: 11 PID: 1205 Comm: nfsdcld Not tainted 5.10.0-00003-g2c1423731b8d #406\\n[ T1205] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190727_073836-buildvm-ppc64le-16.ppc.fedoraproject.org-3.fc31 04/01/2014\\n[ T1205] Call Trace:\\n[ T1205]  dump_stack+0x9a/0xd0\\n[ T1205]  ? nfs4_client_to_reclaim+0xe9/0x260\\n[ T1205]  __kasan_report.cold+0x34/0x84\\n[ T1205]  ? nfs4_client_to_reclaim+0xe9/0x260\\n[ T1205]  kasan_report+0x3a/0x50\\n[ T1205]  nfs4_client_to_reclaim+0xe9/0x260\\n[ T1205]  ? nfsd4_release_lockowner+0x410/0x410\\n[ T1205]  cld_pipe_downcall+0x5ca/0x760\\n[ T1205]  ? nfsd4_cld_tracking_exit+0x1d0/0x1d0\\n[ T1205]  ? down_write_killable_nested+0x170/0x170\\n[ T1205]  ? avc_policy_seqno+0x28/0x40\\n[ T1205]  ? selinux_file_permission+0x1b4/0x1e0\\n[ T1205]  rpc_pipe_write+0x84/0xb0\\n[ T1205]  vfs_write+0x143/0x520\\n[ T1205]  ksys_write+0xc9/0x170\\n[ T1205]  ? __ia32_sys_read+0x50/0x50\\n[ T1205]  ? ktime_get_coarse_real_ts64+0xfe/0x110\\n[ T1205]  ? ktime_get_coarse_real_ts64+0xa2/0x110\\n[ T1205]  do_syscall_64+0x33/0x40\\n[ T1205]  entry_SYSCALL_64_after_hwframe+0x67/0xd1\\n[ T1205] RIP: 0033:0x7fdbdb761bc7\\n[ T1205] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 514\\n[ T1205] RSP: 002b:00007fff8c4b7248 EFLAGS: 00000246 ORIG_RAX: 0000000000000001\\n[ T1205] RAX: ffffffffffffffda RBX: 000000000000042b RCX: 00007fdbdb761bc7\\n[ T1205] RDX: 000000000000042b RSI: 00007fff8c4b75f0 RDI: 0000000000000008\\n[ T1205] RBP: 00007fdbdb761bb0 R08: 0000000000000000 R09: 0000000000000001\\n[ T1205] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000042b\\n[ T1205] R13: 0000000000000008 R14: 00007fff8c4b75f0 R15: 0000000000000000\\n[ T1205] ==================================================================\\n\\nFix it by checking namelen.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.285\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.227\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.113\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.54\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.13\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.2\", \"versionStartIncluding\": \"5.2\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"5.2\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:37:29.902Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-47692\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:37:29.902Z\", \"dateReserved\": \"2024-09-30T16:00:12.942Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T11:53:31.238Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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.