Vulnerability-Lookup

GHSA-77F5-F59V-G352

Vulnerability from github – Published: 2025-03-12 00:31 – Updated: 2025-03-12 00:31

Details

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

sysctl: Fix data races in proc_douintvec().

A sysctl variable is accessed concurrently, and there is always a chance of data-race. So, all readers and writers need some basic protection to avoid load/store-tearing.

This patch changes proc_douintvec() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_douintvec() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side.

Severity ?

4.7 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49641"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:39Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsysctl: Fix data races in proc_douintvec().\n\nA sysctl variable is accessed concurrently, and there is always a chance\nof data-race.  So, all readers and writers need some basic protection to\navoid load/store-tearing.\n\nThis patch changes proc_douintvec() to use READ_ONCE() and WRITE_ONCE()\ninternally to fix data-races on the sysctl side.  For now, proc_douintvec()\nitself is tolerant to a data-race, but we still need to add annotations on\nthe other subsystem\u0027s side.",
  "id": "GHSA-77f5-f59v-g352",
  "modified": "2025-03-12T00:31:48Z",
  "published": "2025-03-12T00:31:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49641"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4762b532ec9539755aab61445d5da6e1926ccb99"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/630c76850d554d7140232e71b5d1663e88cffb54"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d335db59f7fb3353f56e52371f1ee796ae9c8f09"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d5d54714e329f646bd7af4994fc427d88ee68936"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-49641 (GCVE-0-2022-49641)

Vulnerability from cvelistv5 – Published: 2025-02-26 02:23 – Updated: 2025-10-01 19:36

Title

sysctl: Fix data races in proc_douintvec().

Summary

In the Linux kernel, the following vulnerability has been resolved: sysctl: Fix data races in proc_douintvec(). A sysctl variable is accessed concurrently, and there is always a chance of data-race. So, all readers and writers need some basic protection to avoid load/store-tearing. This patch changes proc_douintvec() to use READ_ONCE() and WRITE_ONCE() internally to fix data-races on the sysctl side. For now, proc_douintvec() itself is tolerant to a data-race, but we still need to add annotations on the other subsystem's side.

Severity ?

4.7 (Medium)


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

CWE

CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/d5d54714e329f646b…
	https://git.kernel.org/stable/c/d335db59f7fb3353f…
	https://git.kernel.org/stable/c/630c76850d554d714…
	https://git.kernel.org/stable/c/4762b532ec9539755…

Impacted products

Vendor

Product

Version

Linux

Affected: e7d316a02f683864a12389f8808570e37fb90aa3 , < d5d54714e329f646bd7af4994fc427d88ee68936 (git)
Affected: e7d316a02f683864a12389f8808570e37fb90aa3 , < d335db59f7fb3353f56e52371f1ee796ae9c8f09 (git)
Affected: e7d316a02f683864a12389f8808570e37fb90aa3 , < 630c76850d554d7140232e71b5d1663e88cffb54 (git)
Affected: e7d316a02f683864a12389f8808570e37fb90aa3 , < 4762b532ec9539755aab61445d5da6e1926ccb99 (git)
Affected: 70cd763eb1574cac07138be91f474a661e02d694 (git)
Affected: f4cea51e9a3d536e2ca2b74a958f7c0b4ea733c3 (git)

Linux

Affected: 4.8
Unaffected: 0 , < 4.8 (semver)
Unaffected: 5.10.132 , ≤ 5.10.* (semver)
Unaffected: 5.15.56 , ≤ 5.15.* (semver)
Unaffected: 5.18.13 , ≤ 5.18.* (semver)
Unaffected: 5.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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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.

Action not permitted

GHSA-77F5-F59V-G352

CVE-2022-49641 (GCVE-0-2022-49641)

Tags

Sightings

Nomenclature