FKIE_CVE-2022-49651

Vulnerability from fkie_nvd - Published: 2025-02-26 07:01 - Updated: 2025-03-24 19:03
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: srcu: Tighten cleanup_srcu_struct() GP checks Currently, cleanup_srcu_struct() checks for a grace period in progress, but it does not check for a grace period that has not yet started but which might start at any time. Such a situation could result in a use-after-free bug, so this commit adds a check for a grace period that is needed but not yet started to cleanup_srcu_struct().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8ed00760203d8018bee042fbfe8e076579be2c2bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e997dda6502eefbc1032d6b0da7b353c53344b07Patch
Impacted products
Vendor Product Version
linux linux_kernel *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "87059C94-C259-4650-B469-625FE475651B",
              "versionEndExcluding": "5.18.11",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsrcu: Tighten cleanup_srcu_struct() GP checks\n\nCurrently, cleanup_srcu_struct() checks for a grace period in progress,\nbut it does not check for a grace period that has not yet started but\nwhich might start at any time.  Such a situation could result in a\nuse-after-free bug, so this commit adds a check for a grace period that\nis needed but not yet started to cleanup_srcu_struct()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: srcu: Reforzar las comprobaciones de GP de cleanup_srcu_struct() Actualmente, cleanup_srcu_struct() comprueba si hay un per\u00edodo de gracia en curso, pero no comprueba si hay un per\u00edodo de gracia que a\u00fan no ha comenzado pero que podr\u00eda comenzar en cualquier momento. Una situaci\u00f3n de este tipo podr\u00eda dar lugar a un error de use-after-free, por lo que esta confirmaci\u00f3n a\u00f1ade una comprobaci\u00f3n de un per\u00edodo de gracia que es necesario pero que a\u00fan no ha comenzado a cleanup_srcu_struct()."
    }
  ],
  "id": "CVE-2022-49651",
  "lastModified": "2025-03-24T19:03:58.443",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-02-26T07:01:40.237",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8ed00760203d8018bee042fbfe8e076579be2c2b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e997dda6502eefbc1032d6b0da7b353c53344b07"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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