CVE-2024-53143 (GCVE-0-2024-53143)

Vulnerability from cvelistv5 – Published: 2024-12-07 06:40 – Updated: 2026-08-05 11:44
VLAI
Title
fsnotify: Fix ordering of iput() and watched_objects decrement
Summary
In the Linux kernel, the following vulnerability has been resolved: fsnotify: Fix ordering of iput() and watched_objects decrement Ensure the superblock is kept alive until we're done with iput(). Holding a reference to an inode is not allowed unless we ensure the superblock stays alive, which fsnotify does by keeping the watched_objects count elevated, so iput() must happen before the watched_objects decrement. This can lead to a UAF of something like sb->s_fs_info in tmpfs, but the UAF is hard to hit because race orderings that oops are more likely, thanks to the CHECK_DATA_CORRUPTION() block in generic_shutdown_super(). Also, ensure that fsnotify_put_sb_watched_objects() doesn't call fsnotify_sb_watched_objects() on a superblock that may have already been freed, which would cause a UAF read of sb->s_fsnotify_info.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-11 14:22 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: d2f277e26f521ccf6fb438463b41dba6123caabe , < 45a8f8232a495221ed058191629f5c628f21601a (git)
Affected: d2f277e26f521ccf6fb438463b41dba6123caabe , < 83af1cfa10d9aafdabd06b3655e07727f373b434 (git)
Affected: d2f277e26f521ccf6fb438463b41dba6123caabe , < 21d1b618b6b9da46c5116c640ac4b1cc8d40d63a (git)
Create a notification for this product.
Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.11.11 , ≤ 6.11.* (semver)
Unaffected: 6.12.2 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-53143",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-12-11T14:22:39.197739Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-12-13T13:57:38.651Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/notify/mark.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "45a8f8232a495221ed058191629f5c628f21601a",
              "status": "affected",
              "version": "d2f277e26f521ccf6fb438463b41dba6123caabe",
              "versionType": "git"
            },
            {
              "lessThan": "83af1cfa10d9aafdabd06b3655e07727f373b434",
              "status": "affected",
              "version": "d2f277e26f521ccf6fb438463b41dba6123caabe",
              "versionType": "git"
            },
            {
              "lessThan": "21d1b618b6b9da46c5116c640ac4b1cc8d40d63a",
              "status": "affected",
              "version": "d2f277e26f521ccf6fb438463b41dba6123caabe",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/notify/mark.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.11.*",
              "status": "unaffected",
              "version": "6.11.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.11.11",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.2",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13",
                  "versionStartIncluding": "6.10",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfsnotify: Fix ordering of iput() and watched_objects decrement\n\nEnsure the superblock is kept alive until we\u0027re done with iput().\nHolding a reference to an inode is not allowed unless we ensure the\nsuperblock stays alive, which fsnotify does by keeping the\nwatched_objects count elevated, so iput() must happen before the\nwatched_objects decrement.\nThis can lead to a UAF of something like sb-\u003es_fs_info in tmpfs, but the\nUAF is hard to hit because race orderings that oops are more likely, thanks\nto the CHECK_DATA_CORRUPTION() block in generic_shutdown_super().\n\nAlso, ensure that fsnotify_put_sb_watched_objects() doesn\u0027t call\nfsnotify_sb_watched_objects() on a superblock that may have already been\nfreed, which would cause a UAF read of sb-\u003es_fsnotify_info."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The bug is reached purely through local syscalls \u2014 inotify_init/inotify_add_watch/inotify_rm_watch on one side and mount/umount on the other. No network or remote peer input is involved.\nAC:L - The attacker owns both sides of the race: their own thread dropping the inotify mark and their own thread unmounting their own tmpfs in a private mount namespace, and the loop can be retried indefinitely with attacker-chosen heap grooming and CPU pinning to widen the window.\nPR:L - inotify_user.c has no capability checks at all, and tmpfs/ramfs/FUSE are FS_USERNS_MOUNT, so an unprivileged user gets the required mount and umount via unshare -Urm \u2014 per guidance, user-namespace-reachable is Low, not High.\nUI:N - A single unprivileged process drives the entire sequence \u2014 create the mount, add and remove the watch, and unmount \u2014 with no action by any other user.\nS:U - The corruption is of kernel slab objects (super_block, shmem_sb_info) within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - The freed super_block and s_fs_info are read after free (SHMEM_SB(inode-\u003ei_sb) dereference, sb-\u003es_fsnotify_info read), and since the attacker can reallocate those kmalloc slots with controlled data and observe the results, this is leverageable for kernel memory disclosure.\nI:H - The post-free path performs writes into freed memory \u2014 sbinfo-\u003efree_ispace accumulation, spin_lock acquisition, and list_del on the freed sb-\u003es_inodes head \u2014 giving a groomable write primitive into attacker-reallocated slab objects suitable for control-flow hijacking.\nA:H - The most likely outcome is the CHECK_DATA_CORRUPTION(\"VFS: Busy inodes after unmount\") report, which is a BUG() with CONFIG_BUG_ON_DATA_CORRUPTION, and otherwise the use-after-free on a freed superblock reliably oopses the kernel."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T11:44:05.871Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/45a8f8232a495221ed058191629f5c628f21601a"
        },
        {
          "url": "https://git.kernel.org/stable/c/83af1cfa10d9aafdabd06b3655e07727f373b434"
        },
        {
          "url": "https://git.kernel.org/stable/c/21d1b618b6b9da46c5116c640ac4b1cc8d40d63a"
        },
        {
          "url": "https://project-zero.issues.chromium.org/issues/379667898"
        }
      ],
      "title": "fsnotify: Fix ordering of iput() and watched_objects decrement",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-53143",
    "datePublished": "2024-12-07T06:40:43.522Z",
    "dateReserved": "2024-11-19T17:17:24.997Z",
    "dateUpdated": "2026-08-05T11:44:05.871Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-53143",
      "date": "2026-08-14",
      "epss": "0.00212",
      "percentile": "0.11709"
    },
    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfsnotify: Fix ordering of iput() and watched_objects decrement\\n\\nEnsure the superblock is kept alive until we\u0027re done with iput().\\nHolding a reference to an inode is not allowed unless we ensure the\\nsuperblock stays alive, which fsnotify does by keeping the\\nwatched_objects count elevated, so iput() must happen before the\\nwatched_objects decrement.\\nThis can lead to a UAF of something like sb-\u003es_fs_info in tmpfs, but the\\nUAF is hard to hit because race orderings that oops are more likely, thanks\\nto the CHECK_DATA_CORRUPTION() block in generic_shutdown_super().\\n\\nAlso, ensure that fsnotify_put_sb_watched_objects() doesn\u0027t call\\nfsnotify_sb_watched_objects() on a superblock that may have already been\\nfreed, which would cause a UAF read of sb-\u003es_fsnotify_info.\"}, {\"lang\": \"es\", \"value\": \"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fsnotify: Arreglar el orden de iput() y el decremento de watching_objects Asegurarse de que el superbloque se mantenga activo hasta que terminemos con iput(). No se permite mantener una referencia a un inodo a menos que aseguremos que el superbloque se mantenga activo, lo que fsnotify hace manteniendo elevado el conteo de watching_objects, por lo que iput() debe ocurrir antes del decremento de watching_objects. Esto puede llevar a un UAF de algo como sb-\u0026gt;s_fs_info en tmpfs, pero el UAF es dif\\u00edcil de alcanzar porque las \\u00f3rdenes de ejecuci\\u00f3n que oops son m\\u00e1s probables, gracias al bloque CHECK_DATA_CORRUPTION() en generic_shutdown_super(). Adem\\u00e1s, aseg\\u00farese de que fsnotify_put_sb_watched_objects() no llame a fsnotify_sb_watched_objects() en un superbloque que ya puede haber sido liberado, lo que causar\\u00eda una lectura UAF de sb-\u0026gt;s_fsnotify_info.\"}]",
      "id": "CVE-2024-53143",
      "lastModified": "2025-01-11T13:15:25.250",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
      "published": "2024-12-07T07:15:03.780",
      "references": "[{\"url\": \"https://git.kernel.org/stable/c/21d1b618b6b9da46c5116c640ac4b1cc8d40d63a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/45a8f8232a495221ed058191629f5c628f21601a\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://git.kernel.org/stable/c/83af1cfa10d9aafdabd06b3655e07727f373b434\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}, {\"url\": \"https://project-zero.issues.chromium.org/issues/379667898\", \"source\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]",
      "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "vulnStatus": "Awaiting Analysis",
      "weaknesses": "[{\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-416\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-53143\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-07T07:15:03.780\",\"lastModified\":\"2026-06-17T08:08:24.497\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfsnotify: Fix ordering of iput() and watched_objects decrement\\n\\nEnsure the superblock is kept alive until we\u0027re done with iput().\\nHolding a reference to an inode is not allowed unless we ensure the\\nsuperblock stays alive, which fsnotify does by keeping the\\nwatched_objects count elevated, so iput() must happen before the\\nwatched_objects decrement.\\nThis can lead to a UAF of something like sb-\u003es_fs_info in tmpfs, but the\\nUAF is hard to hit because race orderings that oops are more likely, thanks\\nto the CHECK_DATA_CORRUPTION() block in generic_shutdown_super().\\n\\nAlso, ensure that fsnotify_put_sb_watched_objects() doesn\u0027t call\\nfsnotify_sb_watched_objects() on a superblock that may have already been\\nfreed, which would cause a UAF read of sb-\u003es_fsnotify_info.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fsnotify: Arreglar el orden de iput() y el decremento de watching_objects Asegurarse de que el superbloque se mantenga activo hasta que terminemos con iput(). No se permite mantener una referencia a un inodo a menos que aseguremos que el superbloque se mantenga activo, lo que fsnotify hace manteniendo elevado el conteo de watching_objects, por lo que iput() debe ocurrir antes del decremento de watching_objects. Esto puede llevar a un UAF de algo como sb-\u0026gt;s_fs_info en tmpfs, pero el UAF es dif\u00edcil de alcanzar porque las \u00f3rdenes de ejecuci\u00f3n que oops son m\u00e1s probables, gracias al bloque CHECK_DATA_CORRUPTION() en generic_shutdown_super(). Adem\u00e1s, aseg\u00farese de que fsnotify_put_sb_watched_objects() no llame a fsnotify_sb_watched_objects() en un superbloque que ya puede haber sido liberado, lo que causar\u00eda una lectura UAF de sb-\u0026gt;s_fsnotify_info.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/notify/mark.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"d2f277e26f521ccf6fb438463b41dba6123caabe\",\"lessThan\":\"45a8f8232a495221ed058191629f5c628f21601a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d2f277e26f521ccf6fb438463b41dba6123caabe\",\"lessThan\":\"83af1cfa10d9aafdabd06b3655e07727f373b434\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d2f277e26f521ccf6fb438463b41dba6123caabe\",\"lessThan\":\"21d1b618b6b9da46c5116c640ac4b1cc8d40d63a\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/notify/mark.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11.11\",\"lessThanOrEqual\":\"6.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.2\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.13\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-12-11T14:22:39.197739Z\",\"id\":\"CVE-2024-53143\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.10\",\"versionEndExcluding\":\"6.11.11\",\"matchCriteriaId\":\"158A6B22-9260-41D7-965A-A81798A5A969\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.12\",\"versionEndExcluding\":\"6.12.2\",\"matchCriteriaId\":\"D8882B1B-2ABC-4838-AC1D-DBDBB5764776\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/21d1b618b6b9da46c5116c640ac4b1cc8d40d63a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/45a8f8232a495221ed058191629f5c628f21601a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/83af1cfa10d9aafdabd06b3655e07727f373b434\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://project-zero.issues.chromium.org/issues/379667898\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-11T15:27:23+00:00",
      "cve": "CVE-2024-53143",
      "id": "CVE-2024-53143",
      "initial_release_date": "2024-12-07T00:00:00+00:00",
      "product_status:fixed": "309",
      "product_status:known_affected": "28",
      "product_status:known_not_affected": "170",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: fsnotify: Fix ordering of iput() and watched_objects decrement",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-53143.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-12T00:09:56Z",
      "cve": "CVE-2024-53143",
      "id": "CVE-2024-53143",
      "initial_release_date": "2024-12-08T03:48:58Z",
      "product_status:known_not_affected": "375",
      "product_status:recommended": "95",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-53143",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-53143.json",
      "version": "27"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-53143\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-12-11T14:22:39.197739Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-12-11T14:22:09.680Z\"}}], \"cna\": {\"title\": \"fsnotify: Fix ordering of iput() and watched_objects decrement\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"d2f277e26f521ccf6fb438463b41dba6123caabe\", \"lessThan\": \"45a8f8232a495221ed058191629f5c628f21601a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d2f277e26f521ccf6fb438463b41dba6123caabe\", \"lessThan\": \"83af1cfa10d9aafdabd06b3655e07727f373b434\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d2f277e26f521ccf6fb438463b41dba6123caabe\", \"lessThan\": \"21d1b618b6b9da46c5116c640ac4b1cc8d40d63a\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/notify/mark.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.11.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.2\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/notify/mark.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/45a8f8232a495221ed058191629f5c628f21601a\"}, {\"url\": \"https://git.kernel.org/stable/c/83af1cfa10d9aafdabd06b3655e07727f373b434\"}, {\"url\": \"https://git.kernel.org/stable/c/21d1b618b6b9da46c5116c640ac4b1cc8d40d63a\"}, {\"url\": \"https://project-zero.issues.chromium.org/issues/379667898\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfsnotify: Fix ordering of iput() and watched_objects decrement\\n\\nEnsure the superblock is kept alive until we\u0027re done with iput().\\nHolding a reference to an inode is not allowed unless we ensure the\\nsuperblock stays alive, which fsnotify does by keeping the\\nwatched_objects count elevated, so iput() must happen before the\\nwatched_objects decrement.\\nThis can lead to a UAF of something like sb-\u003es_fs_info in tmpfs, but the\\nUAF is hard to hit because race orderings that oops are more likely, thanks\\nto the CHECK_DATA_CORRUPTION() block in generic_shutdown_super().\\n\\nAlso, ensure that fsnotify_put_sb_watched_objects() doesn\u0027t call\\nfsnotify_sb_watched_objects() on a superblock that may have already been\\nfreed, which would cause a UAF read of sb-\u003es_fsnotify_info.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.11\", \"versionStartIncluding\": \"6.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.2\", \"versionStartIncluding\": \"6.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13\", \"versionStartIncluding\": \"6.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T09:54:07.791Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-53143\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-04T09:54:07.791Z\", \"dateReserved\": \"2024-11-19T17:17:24.997Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-12-07T06:40:43.522Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.