FKIE_CVE-2026-72449

Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-10-16 19:17
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: drm/amdkfd: fix list_del corruption in kfd_criu_resume_svm The cleanup tail of kfd_criu_resume_svm() walks svms->criu_svm_metadata_list and kfree()s each struct criu_svm_metadata without removing it from the list. The list head is left pointing at freed kmalloc-96 objects. A second AMDKFD_IOC_CRIU_OP from the same process re-enters: list_empty() reads the dangling ->next (use-after-free), the loop walks freed entries, and each is kfree()'d again (double-free). This is reachable by an unprivileged render-group user via /dev/kfd with no capabilities required. Add list_del() before the kfree() so the list is properly emptied. The list_for_each_entry_safe() iterator already caches the next pointer, so unlinking during the walk is safe. (cherry picked from commit 6322d278a298e2c1430b9d2697743d3a04b788b1)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/506e635aed05dbdeef11e3c59f6e42980cda5b6d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/838b57b3e7ce8cce0fda56d0861add3d464dd6c8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8fa5655da368d0306c03e9dc9cda8ae2a7840926
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/96ac562a9ea3020981f536384711190841c81aa8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c8a8d350a273c005a48c64c4519d21b2a51c5ceb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e33a3bd5cb8d0cf1557dee014115f812c9686130
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_svm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "c8a8d350a273c005a48c64c4519d21b2a51c5ceb",
              "status": "affected",
              "version": "2a909ae718715b3bac75d945e38dc0a5e4a0f1ba",
              "versionType": "git"
            },
            {
              "lessThan": "506e635aed05dbdeef11e3c59f6e42980cda5b6d",
              "status": "affected",
              "version": "2a909ae718715b3bac75d945e38dc0a5e4a0f1ba",
              "versionType": "git"
            },
            {
              "lessThan": "838b57b3e7ce8cce0fda56d0861add3d464dd6c8",
              "status": "affected",
              "version": "2a909ae718715b3bac75d945e38dc0a5e4a0f1ba",
              "versionType": "git"
            },
            {
              "lessThan": "96ac562a9ea3020981f536384711190841c81aa8",
              "status": "affected",
              "version": "2a909ae718715b3bac75d945e38dc0a5e4a0f1ba",
              "versionType": "git"
            },
            {
              "lessThan": "e33a3bd5cb8d0cf1557dee014115f812c9686130",
              "status": "affected",
              "version": "2a909ae718715b3bac75d945e38dc0a5e4a0f1ba",
              "versionType": "git"
            },
            {
              "lessThan": "8fa5655da368d0306c03e9dc9cda8ae2a7840926",
              "status": "affected",
              "version": "2a909ae718715b3bac75d945e38dc0a5e4a0f1ba",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_svm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "lessThan": "5.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: fix list_del corruption in kfd_criu_resume_svm\n\nThe cleanup tail of kfd_criu_resume_svm() walks\nsvms-\u003ecriu_svm_metadata_list and kfree()s each struct criu_svm_metadata\nwithout removing it from the list. The list head is left pointing at\nfreed kmalloc-96 objects.\n\nA second AMDKFD_IOC_CRIU_OP from the same process re-enters: list_empty()\nreads the dangling -\u003enext (use-after-free), the loop walks freed entries,\nand each is kfree()\u0027d again (double-free). This is reachable by an\nunprivileged render-group user via /dev/kfd with no capabilities required.\n\nAdd list_del() before the kfree() so the list is properly emptied. The\nlist_for_each_entry_safe() iterator already caches the next pointer, so\nunlinking during the walk is safe.\n\n(cherry picked from commit 6322d278a298e2c1430b9d2697743d3a04b788b1)"
    }
  ],
  "id": "CVE-2026-72449",
  "lastModified": "2026-10-16T19:17:31.053",
  "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": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-72449",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-16T18:50:12.270854Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-15T06:22:18.837",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/506e635aed05dbdeef11e3c59f6e42980cda5b6d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/838b57b3e7ce8cce0fda56d0861add3d464dd6c8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8fa5655da368d0306c03e9dc9cda8ae2a7840926"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/96ac562a9ea3020981f536384711190841c81aa8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c8a8d350a273c005a48c64c4519d21b2a51c5ceb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e33a3bd5cb8d0cf1557dee014115f812c9686130"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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