CVE-2022-49957 (GCVE-0-2022-49957)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:00 – Updated: 2025-06-18 11:00
VLAI?
Title
kcm: fix strp_init() order and cleanup
Summary
In the Linux kernel, the following vulnerability has been resolved: kcm: fix strp_init() order and cleanup strp_init() is called just a few lines above this csk->sk_user_data check, it also initializes strp->work etc., therefore, it is unnecessary to call strp_done() to cancel the freshly initialized work. And if sk_user_data is already used by KCM, psock->strp should not be touched, particularly strp->work state, so we need to move strp_init() after the csk->sk_user_data check. This also makes a lockdep warning reported by syzbot go away.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 44890e9ff771ef11777b2d1ebf8589255eb12502 , < 473f394953216614087f4179e55cdf0cf616a13b (git)
Affected: e5571240236c5652f3e079b1d5866716a7ad819c , < a8a0c321319ad64a5427d6172cd9c23b4d6ca1e8 (git)
Affected: e5571240236c5652f3e079b1d5866716a7ad819c , < 0946ff31d1a8778787bf6708beb20f38715267cc (git)
Affected: e5571240236c5652f3e079b1d5866716a7ad819c , < 1b6666964ca1de93a7bf06e122bcf3616dbd33a9 (git)
Affected: e5571240236c5652f3e079b1d5866716a7ad819c , < 55fb8c3baa8071c5d533a9ad48624e44e2a04ef5 (git)
Affected: e5571240236c5652f3e079b1d5866716a7ad819c , < f865976baa85915c7672f351b74d5974b93215f6 (git)
Affected: e5571240236c5652f3e079b1d5866716a7ad819c , < 8fc29ff3910f3af08a7c40a75d436b5720efe2bf (git)
Affected: 085cbbda4b4cc7dd2ba63806346881c2c2e10107 (git)
Affected: 383250363daf01eb7aa3728c09ef8a4f6d8a3252 (git)
Affected: 19042316b9e12c93bf334a04d4dd7a4e846c7311 (git)
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    Linux Linux Affected: 4.15
Unaffected: 0 , < 4.15 (semver)
Unaffected: 4.14.293 , ≤ 4.14.* (semver)
Unaffected: 4.19.258 , ≤ 4.19.* (semver)
Unaffected: 5.4.213 , ≤ 5.4.* (semver)
Unaffected: 5.10.142 , ≤ 5.10.* (semver)
Unaffected: 5.15.66 , ≤ 5.15.* (semver)
Unaffected: 5.19.8 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkcm: fix strp_init() order and cleanup\n\nstrp_init() is called just a few lines above this csk-\u003esk_user_data\ncheck, it also initializes strp-\u003ework etc., therefore, it is\nunnecessary to call strp_done() to cancel the freshly initialized\nwork.\n\nAnd if sk_user_data is already used by KCM, psock-\u003estrp should not be\ntouched, particularly strp-\u003ework state, so we need to move strp_init()\nafter the csk-\u003esk_user_data check.\n\nThis also makes a lockdep warning reported by syzbot go away."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-18T11:00:19.238Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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        {
          "url": "https://git.kernel.org/stable/c/8fc29ff3910f3af08a7c40a75d436b5720efe2bf"
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      "title": "kcm: fix strp_init() order and cleanup",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49957",
    "datePublished": "2025-06-18T11:00:19.238Z",
    "dateReserved": "2025-06-18T10:57:27.382Z",
    "dateUpdated": "2025-06-18T11:00:19.238Z",
    "state": "PUBLISHED"
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