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

Vulnerability from cvelistv5 – Published: 2025-06-18 11:00 – Updated: 2026-05-27 09:27
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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
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)
Affected: 4.14.22 , < 4.14.293 (semver)
Affected: 4.9.84 , < 4.10 (semver)
Affected: 4.9.100 , < 4.10 (semver)
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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)
guessed Create a notification for this product.
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          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: kcm: correcci\u00f3n del orden y la limpieza de strp_init(). strp_init() se llama solo unas l\u00edneas por encima de la comprobaci\u00f3n csk-\u0026gt;sk_user_data; tambi\u00e9n inicializa strp-\u0026gt;work, etc., por lo que no es necesario llamar a strp_done() para cancelar el trabajo reci\u00e9n inicializado. Si KCM ya utiliza sk_user_data, no se debe modificar psock-\u0026gt;strp, en particular el estado strp-\u0026gt;work, por lo que es necesario mover strp_init() despu\u00e9s de la comprobaci\u00f3n csk-\u0026gt;sk_user_data. Esto tambi\u00e9n elimina la advertencia de lockdep reportada por syzbot."
          }
        ],
        "id": "CVE-2022-49957",
        "lastModified": "2026-06-17T05:19:37.260",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2025-06-18T11:15:22.897",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/0946ff31d1a8778787bf6708beb20f38715267cc"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/1b6666964ca1de93a7bf06e122bcf3616dbd33a9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/473f394953216614087f4179e55cdf0cf616a13b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/55fb8c3baa8071c5d533a9ad48624e44e2a04ef5"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/8fc29ff3910f3af08a7c40a75d436b5720efe2bf"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/a8a0c321319ad64a5427d6172cd9c23b4d6ca1e8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/f865976baa85915c7672f351b74d5974b93215f6"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-908"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:20:34+00:00",
      "cve": "CVE-2022-49957",
      "id": "CVE-2022-49957",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: kcm: fix strp_init() order and cleanup",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-49957.json",
      "version": "3"
    }
  }
}



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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

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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.