Vulnerability-Lookup

GHSA-HC4H-PG37-34F7

Vulnerability from github – Published: 2025-06-18 12:30 – Updated: 2025-11-17 21:31

Details

In the Linux kernel, the following vulnerability has been resolved:

cifs: Fix memory leak on the deferred close

xfstests on smb21 report kmemleak as below:

unreferenced object 0xffff8881767d6200 (size 64): comm "xfs_io", pid 1284, jiffies 4294777434 (age 20.789s) hex dump (first 32 bytes): 80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff .Z......x..c.... 00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00 .q.v............ backtrace: [<00000000ad04e6ea>] cifs_close+0x92/0x2c0 [<0000000028b93c82>] __fput+0xff/0x3f0 [<00000000d8116851>] task_work_run+0x85/0xc0 [<0000000027e14f9e>] do_exit+0x5e5/0x1240 [<00000000fb492b95>] do_group_exit+0x58/0xe0 [<00000000129a32d9>] __x64_sys_exit_group+0x28/0x30 [<00000000e3f7d8e9>] do_syscall_64+0x35/0x80 [<00000000102e8a0b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

When cancel the deferred close work, we should also cleanup the struct cifs_deferred_close.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50076"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-06-18T11:15:36Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix memory leak on the deferred close\n\nxfstests on smb21 report kmemleak as below:\n\n  unreferenced object 0xffff8881767d6200 (size 64):\n    comm \"xfs_io\", pid 1284, jiffies 4294777434 (age 20.789s)\n    hex dump (first 32 bytes):\n      80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff  .Z......x..c....\n      00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00  .q.v............\n    backtrace:\n      [\u003c00000000ad04e6ea\u003e] cifs_close+0x92/0x2c0\n      [\u003c0000000028b93c82\u003e] __fput+0xff/0x3f0\n      [\u003c00000000d8116851\u003e] task_work_run+0x85/0xc0\n      [\u003c0000000027e14f9e\u003e] do_exit+0x5e5/0x1240\n      [\u003c00000000fb492b95\u003e] do_group_exit+0x58/0xe0\n      [\u003c00000000129a32d9\u003e] __x64_sys_exit_group+0x28/0x30\n      [\u003c00000000e3f7d8e9\u003e] do_syscall_64+0x35/0x80\n      [\u003c00000000102e8a0b\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nWhen cancel the deferred close work, we should also cleanup the struct\ncifs_deferred_close.",
  "id": "GHSA-hc4h-pg37-34f7",
  "modified": "2025-11-17T21:31:17Z",
  "published": "2025-06-18T12:30:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50076"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/860efae127888ae535bc4eda1b7f27642727c69e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca08d0eac020d48a3141dbec0a3cf64fbdb17cde"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-50076 (GCVE-0-2022-50076)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:02 – Updated: 2026-05-23 15:23

Title

cifs: Fix memory leak on the deferred close

Summary

In the Linux kernel, the following vulnerability has been resolved: cifs: Fix memory leak on the deferred close xfstests on smb21 report kmemleak as below: unreferenced object 0xffff8881767d6200 (size 64): comm "xfs_io", pid 1284, jiffies 4294777434 (age 20.789s) hex dump (first 32 bytes): 80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff .Z......x..c.... 00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00 .q.v............ backtrace: [<00000000ad04e6ea>] cifs_close+0x92/0x2c0 [<0000000028b93c82>] __fput+0xff/0x3f0 [<00000000d8116851>] task_work_run+0x85/0xc0 [<0000000027e14f9e>] do_exit+0x5e5/0x1240 [<00000000fb492b95>] do_group_exit+0x58/0xe0 [<00000000129a32d9>] __x64_sys_exit_group+0x28/0x30 [<00000000e3f7d8e9>] do_syscall_64+0x35/0x80 [<00000000102e8a0b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 When cancel the deferred close work, we should also cleanup the struct cifs_deferred_close.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/860efae127888ae53…
https://git.kernel.org/stable/c/60b6d38add7b9c17d…
https://git.kernel.org/stable/c/ca08d0eac020d48a3…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 9e992755be8f2d458a0bcbefd19e493483c1dba2 , < 860efae127888ae535bc4eda1b7f27642727c69e (git) Affected: 9e992755be8f2d458a0bcbefd19e493483c1dba2 , < 60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5 (git) Affected: 9e992755be8f2d458a0bcbefd19e493483c1dba2 , < ca08d0eac020d48a3141dbec0a3cf64fbdb17cde (git) Affected: 0ca6ac8a2691762307beaa4841255d1cfe6b2684 (git) Affected: 5.13.12 , < 5.14 (semver)
Linux	Linux	Affected: 5.14 Unaffected: 0 , < 5.14 (semver) Unaffected: 5.15.63 , ≤ 5.15.* (semver) Unaffected: 5.19.4 , ≤ 5.19.* (semver) Unaffected: 6.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/cifs/misc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "860efae127888ae535bc4eda1b7f27642727c69e",
              "status": "affected",
              "version": "9e992755be8f2d458a0bcbefd19e493483c1dba2",
              "versionType": "git"
            },
            {
              "lessThan": "60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5",
              "status": "affected",
              "version": "9e992755be8f2d458a0bcbefd19e493483c1dba2",
              "versionType": "git"
            },
            {
              "lessThan": "ca08d0eac020d48a3141dbec0a3cf64fbdb17cde",
              "status": "affected",
              "version": "9e992755be8f2d458a0bcbefd19e493483c1dba2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0ca6ac8a2691762307beaa4841255d1cfe6b2684",
              "versionType": "git"
            },
            {
              "lessThan": "5.14",
              "status": "affected",
              "version": "5.13.12",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/cifs/misc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "lessThan": "5.14",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.63",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.4",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
                  "versionStartIncluding": "5.14",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.13.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix memory leak on the deferred close\n\nxfstests on smb21 report kmemleak as below:\n\n  unreferenced object 0xffff8881767d6200 (size 64):\n    comm \"xfs_io\", pid 1284, jiffies 4294777434 (age 20.789s)\n    hex dump (first 32 bytes):\n      80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff  .Z......x..c....\n      00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00  .q.v............\n    backtrace:\n      [\u003c00000000ad04e6ea\u003e] cifs_close+0x92/0x2c0\n      [\u003c0000000028b93c82\u003e] __fput+0xff/0x3f0\n      [\u003c00000000d8116851\u003e] task_work_run+0x85/0xc0\n      [\u003c0000000027e14f9e\u003e] do_exit+0x5e5/0x1240\n      [\u003c00000000fb492b95\u003e] do_group_exit+0x58/0xe0\n      [\u003c00000000129a32d9\u003e] __x64_sys_exit_group+0x28/0x30\n      [\u003c00000000e3f7d8e9\u003e] do_syscall_64+0x35/0x80\n      [\u003c00000000102e8a0b\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nWhen cancel the deferred close work, we should also cleanup the struct\ncifs_deferred_close."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-23T15:23:39.604Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/860efae127888ae535bc4eda1b7f27642727c69e"
        },
        {
          "url": "https://git.kernel.org/stable/c/60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca08d0eac020d48a3141dbec0a3cf64fbdb17cde"
        }
      ],
      "title": "cifs: Fix memory leak on the deferred close",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50076",
    "datePublished": "2025-06-18T11:02:19.514Z",
    "dateReserved": "2025-06-18T10:57:27.408Z",
    "dateUpdated": "2026-05-23T15:23:39.604Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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