CVE-2021-47082 (GCVE-0-2021-47082)

Vulnerability from cvelistv5 – Published: 2024-03-04 18:06 – Updated: 2025-12-18 11:35
VLAI?
Title
tun: avoid double free in tun_free_netdev
Summary
In the Linux kernel, the following vulnerability has been resolved: tun: avoid double free in tun_free_netdev Avoid double free in tun_free_netdev() by moving the dev->tstats and tun->security allocs to a new ndo_init routine (tun_net_init()) that will be called by register_netdevice(). ndo_init is paired with the desctructor (tun_free_netdev()), so if there's an error in register_netdevice() the destructor will handle the frees. BUG: KASAN: double-free or invalid-free in selinux_tun_dev_free_security+0x1a/0x20 security/selinux/hooks.c:5605 CPU: 0 PID: 25750 Comm: syz-executor416 Not tainted 5.16.0-rc2-syzk #1 Hardware name: Red Hat KVM, BIOS Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:106 print_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:247 kasan_report_invalid_free+0x55/0x80 mm/kasan/report.c:372 ____kasan_slab_free mm/kasan/common.c:346 [inline] __kasan_slab_free+0x107/0x120 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:1723 [inline] slab_free_freelist_hook mm/slub.c:1749 [inline] slab_free mm/slub.c:3513 [inline] kfree+0xac/0x2d0 mm/slub.c:4561 selinux_tun_dev_free_security+0x1a/0x20 security/selinux/hooks.c:5605 security_tun_dev_free_security+0x4f/0x90 security/security.c:2342 tun_free_netdev+0xe6/0x150 drivers/net/tun.c:2215 netdev_run_todo+0x4df/0x840 net/core/dev.c:10627 rtnl_unlock+0x13/0x20 net/core/rtnetlink.c:112 __tun_chr_ioctl+0x80c/0x2870 drivers/net/tun.c:3302 tun_chr_ioctl+0x2f/0x40 drivers/net/tun.c:3311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 662ca437e714caaab855b12415d6ffd815985bc0 , < 8eb43d635950e27c29f1e9e49a23b31637f37757 (git)
Affected: 662ca437e714caaab855b12415d6ffd815985bc0 , < 0c0e566f0387490d16f166808c72e9c772027681 (git)
Affected: 662ca437e714caaab855b12415d6ffd815985bc0 , < a01a4e9f5dc93335c716fa4023b1901956e8c904 (git)
Affected: 662ca437e714caaab855b12415d6ffd815985bc0 , < 3cb5ae77799e8ed6ec3fec0b6b4cd07f01650cc5 (git)
Affected: 662ca437e714caaab855b12415d6ffd815985bc0 , < 158b515f703e75e7d68289bf4d98c664e1d632df (git)
Affected: a81a02460bdf054ca0c60c5aed29941f7134092d (git)
Affected: 6fc265f7a86d81e052508d03da555188f5882c3e (git)
Create a notification for this product.
    Linux Linux Affected: 3.12
Unaffected: 0 , < 3.12 (semver)
Unaffected: 4.19.280 , ≤ 4.19.* (semver)
Unaffected: 5.4.240 , ≤ 5.4.* (semver)
Unaffected: 5.10.136 , ≤ 5.10.* (semver)
Unaffected: 5.15.12 , ≤ 5.15.* (semver)
Unaffected: 5.16 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-47082",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-03-05T16:05:48.438280Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:14:25.499Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:24:39.695Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/8eb43d635950e27c29f1e9e49a23b31637f37757"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/0c0e566f0387490d16f166808c72e9c772027681"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/a01a4e9f5dc93335c716fa4023b1901956e8c904"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/3cb5ae77799e8ed6ec3fec0b6b4cd07f01650cc5"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/158b515f703e75e7d68289bf4d98c664e1d632df"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/tun.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8eb43d635950e27c29f1e9e49a23b31637f37757",
              "status": "affected",
              "version": "662ca437e714caaab855b12415d6ffd815985bc0",
              "versionType": "git"
            },
            {
              "lessThan": "0c0e566f0387490d16f166808c72e9c772027681",
              "status": "affected",
              "version": "662ca437e714caaab855b12415d6ffd815985bc0",
              "versionType": "git"
            },
            {
              "lessThan": "a01a4e9f5dc93335c716fa4023b1901956e8c904",
              "status": "affected",
              "version": "662ca437e714caaab855b12415d6ffd815985bc0",
              "versionType": "git"
            },
            {
              "lessThan": "3cb5ae77799e8ed6ec3fec0b6b4cd07f01650cc5",
              "status": "affected",
              "version": "662ca437e714caaab855b12415d6ffd815985bc0",
              "versionType": "git"
            },
            {
              "lessThan": "158b515f703e75e7d68289bf4d98c664e1d632df",
              "status": "affected",
              "version": "662ca437e714caaab855b12415d6ffd815985bc0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a81a02460bdf054ca0c60c5aed29941f7134092d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6fc265f7a86d81e052508d03da555188f5882c3e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/tun.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.12"
            },
            {
              "lessThan": "3.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.280",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.240",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.136",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "5.16",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "4.19.280",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.240",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.136",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.12",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.16",
                  "versionStartIncluding": "3.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.10.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.11.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntun: avoid double free in tun_free_netdev\n\nAvoid double free in tun_free_netdev() by moving the\ndev-\u003etstats and tun-\u003esecurity allocs to a new ndo_init routine\n(tun_net_init()) that will be called by register_netdevice().\nndo_init is paired with the desctructor (tun_free_netdev()),\nso if there\u0027s an error in register_netdevice() the destructor\nwill handle the frees.\n\nBUG: KASAN: double-free or invalid-free in selinux_tun_dev_free_security+0x1a/0x20 security/selinux/hooks.c:5605\n\nCPU: 0 PID: 25750 Comm: syz-executor416 Not tainted 5.16.0-rc2-syzk #1\nHardware name: Red Hat KVM, BIOS\nCall Trace:\n\u003cTASK\u003e\n__dump_stack lib/dump_stack.c:88 [inline]\ndump_stack_lvl+0x89/0xb5 lib/dump_stack.c:106\nprint_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:247\nkasan_report_invalid_free+0x55/0x80 mm/kasan/report.c:372\n____kasan_slab_free mm/kasan/common.c:346 [inline]\n__kasan_slab_free+0x107/0x120 mm/kasan/common.c:374\nkasan_slab_free include/linux/kasan.h:235 [inline]\nslab_free_hook mm/slub.c:1723 [inline]\nslab_free_freelist_hook mm/slub.c:1749 [inline]\nslab_free mm/slub.c:3513 [inline]\nkfree+0xac/0x2d0 mm/slub.c:4561\nselinux_tun_dev_free_security+0x1a/0x20 security/selinux/hooks.c:5605\nsecurity_tun_dev_free_security+0x4f/0x90 security/security.c:2342\ntun_free_netdev+0xe6/0x150 drivers/net/tun.c:2215\nnetdev_run_todo+0x4df/0x840 net/core/dev.c:10627\nrtnl_unlock+0x13/0x20 net/core/rtnetlink.c:112\n__tun_chr_ioctl+0x80c/0x2870 drivers/net/tun.c:3302\ntun_chr_ioctl+0x2f/0x40 drivers/net/tun.c:3311\nvfs_ioctl fs/ioctl.c:51 [inline]\n__do_sys_ioctl fs/ioctl.c:874 [inline]\n__se_sys_ioctl fs/ioctl.c:860 [inline]\n__x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:860\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x3a/0x80 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x44/0xae"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-18T11:35:34.604Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8eb43d635950e27c29f1e9e49a23b31637f37757"
        },
        {
          "url": "https://git.kernel.org/stable/c/0c0e566f0387490d16f166808c72e9c772027681"
        },
        {
          "url": "https://git.kernel.org/stable/c/a01a4e9f5dc93335c716fa4023b1901956e8c904"
        },
        {
          "url": "https://git.kernel.org/stable/c/3cb5ae77799e8ed6ec3fec0b6b4cd07f01650cc5"
        },
        {
          "url": "https://git.kernel.org/stable/c/158b515f703e75e7d68289bf4d98c664e1d632df"
        }
      ],
      "title": "tun: avoid double free in tun_free_netdev",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2021-47082",
    "datePublished": "2024-03-04T18:06:17.081Z",
    "dateReserved": "2024-02-29T22:33:44.298Z",
    "dateUpdated": "2025-12-18T11:35:34.604Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8eb43d635950e27c29f1e9e49a23b31637f37757\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/0c0e566f0387490d16f166808c72e9c772027681\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/a01a4e9f5dc93335c716fa4023b1901956e8c904\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/3cb5ae77799e8ed6ec3fec0b6b4cd07f01650cc5\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/158b515f703e75e7d68289bf4d98c664e1d632df\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:24:39.695Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47082\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-03-05T16:05:48.438280Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:15.246Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"tun: avoid double free in tun_free_netdev\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"662ca437e714caaab855b12415d6ffd815985bc0\", \"lessThan\": \"8eb43d635950e27c29f1e9e49a23b31637f37757\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"662ca437e714caaab855b12415d6ffd815985bc0\", \"lessThan\": \"0c0e566f0387490d16f166808c72e9c772027681\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"662ca437e714caaab855b12415d6ffd815985bc0\", \"lessThan\": \"a01a4e9f5dc93335c716fa4023b1901956e8c904\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"662ca437e714caaab855b12415d6ffd815985bc0\", \"lessThan\": \"3cb5ae77799e8ed6ec3fec0b6b4cd07f01650cc5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"662ca437e714caaab855b12415d6ffd815985bc0\", \"lessThan\": \"158b515f703e75e7d68289bf4d98c664e1d632df\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a81a02460bdf054ca0c60c5aed29941f7134092d\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6fc265f7a86d81e052508d03da555188f5882c3e\", \"versionType\": \"git\"}], \"programFiles\": [\"drivers/net/tun.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.12\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.12\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"4.19.280\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"4.19.*\"}, {\"status\": \"unaffected\", \"version\": \"5.4.240\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.136\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.12\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/net/tun.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8eb43d635950e27c29f1e9e49a23b31637f37757\"}, {\"url\": \"https://git.kernel.org/stable/c/0c0e566f0387490d16f166808c72e9c772027681\"}, {\"url\": \"https://git.kernel.org/stable/c/a01a4e9f5dc93335c716fa4023b1901956e8c904\"}, {\"url\": \"https://git.kernel.org/stable/c/3cb5ae77799e8ed6ec3fec0b6b4cd07f01650cc5\"}, {\"url\": \"https://git.kernel.org/stable/c/158b515f703e75e7d68289bf4d98c664e1d632df\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ntun: avoid double free in tun_free_netdev\\n\\nAvoid double free in tun_free_netdev() by moving the\\ndev-\u003etstats and tun-\u003esecurity allocs to a new ndo_init routine\\n(tun_net_init()) that will be called by register_netdevice().\\nndo_init is paired with the desctructor (tun_free_netdev()),\\nso if there\u0027s an error in register_netdevice() the destructor\\nwill handle the frees.\\n\\nBUG: KASAN: double-free or invalid-free in selinux_tun_dev_free_security+0x1a/0x20 security/selinux/hooks.c:5605\\n\\nCPU: 0 PID: 25750 Comm: syz-executor416 Not tainted 5.16.0-rc2-syzk #1\\nHardware name: Red Hat KVM, BIOS\\nCall Trace:\\n\u003cTASK\u003e\\n__dump_stack lib/dump_stack.c:88 [inline]\\ndump_stack_lvl+0x89/0xb5 lib/dump_stack.c:106\\nprint_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:247\\nkasan_report_invalid_free+0x55/0x80 mm/kasan/report.c:372\\n____kasan_slab_free mm/kasan/common.c:346 [inline]\\n__kasan_slab_free+0x107/0x120 mm/kasan/common.c:374\\nkasan_slab_free include/linux/kasan.h:235 [inline]\\nslab_free_hook mm/slub.c:1723 [inline]\\nslab_free_freelist_hook mm/slub.c:1749 [inline]\\nslab_free mm/slub.c:3513 [inline]\\nkfree+0xac/0x2d0 mm/slub.c:4561\\nselinux_tun_dev_free_security+0x1a/0x20 security/selinux/hooks.c:5605\\nsecurity_tun_dev_free_security+0x4f/0x90 security/security.c:2342\\ntun_free_netdev+0xe6/0x150 drivers/net/tun.c:2215\\nnetdev_run_todo+0x4df/0x840 net/core/dev.c:10627\\nrtnl_unlock+0x13/0x20 net/core/rtnetlink.c:112\\n__tun_chr_ioctl+0x80c/0x2870 drivers/net/tun.c:3302\\ntun_chr_ioctl+0x2f/0x40 drivers/net/tun.c:3311\\nvfs_ioctl fs/ioctl.c:51 [inline]\\n__do_sys_ioctl fs/ioctl.c:874 [inline]\\n__se_sys_ioctl fs/ioctl.c:860 [inline]\\n__x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:860\\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\\ndo_syscall_64+0x3a/0x80 arch/x86/entry/common.c:80\\nentry_SYSCALL_64_after_hwframe+0x44/0xae\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.280\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.240\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.136\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.12\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16\", \"versionStartIncluding\": \"3.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"3.10.16\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"3.11.5\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-12-18T11:35:34.604Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-47082\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-12-18T11:35:34.604Z\", \"dateReserved\": \"2024-02-29T22:33:44.298Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-03-04T18:06:17.081Z\", \"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.