FKIE_CVE-2026-80571

Vulnerability from fkie_nvd - Published: 2026-08-26 15:17 - Updated: 2026-08-26 15:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/pseries: papr-phy-attest - validate cmd.length, plug mem leak In papr_phy_attest_create_handle(), the params->cmd.length is not validated before use, which can result in a buffer overlow. Check it and return -EINVAL if it is either 0 or exceeds sizeof(params->cmd). Also, params is freed on the success path but not error. Free it on errors after memory allocation. And free it on negative fd.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5b17f3f34391372faf03e79d947e0c50ab6dd258
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/828a8d1a9107aec6353d896882df8383accf7e80
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed98ce338f9a65c90cb930b088f1eb36de7181af
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/platforms/pseries/papr-phy-attest.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "828a8d1a9107aec6353d896882df8383accf7e80",
              "status": "affected",
              "version": "86900ab620a42396a749b506d4a187820fc3fabe",
              "versionType": "git"
            },
            {
              "lessThan": "ed98ce338f9a65c90cb930b088f1eb36de7181af",
              "status": "affected",
              "version": "86900ab620a42396a749b506d4a187820fc3fabe",
              "versionType": "git"
            },
            {
              "lessThan": "5b17f3f34391372faf03e79d947e0c50ab6dd258",
              "status": "affected",
              "version": "86900ab620a42396a749b506d4a187820fc3fabe",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/platforms/pseries/papr-phy-attest.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "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\npowerpc/pseries: papr-phy-attest - validate cmd.length, plug mem leak\n\nIn papr_phy_attest_create_handle(), the params-\u003ecmd.length is not\nvalidated before use, which can result in a buffer overlow.  Check it and\nreturn -EINVAL if it is either 0 or exceeds sizeof(params-\u003ecmd).\n\nAlso, params is freed on the success path but not error. Free it on\nerrors after memory allocation.  And free it on negative fd."
    }
  ],
  "id": "CVE-2026-80571",
  "lastModified": "2026-08-26T15:17:13.020",
  "metrics": {},
  "published": "2026-08-26T15:17:13.020",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5b17f3f34391372faf03e79d947e0c50ab6dd258"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/828a8d1a9107aec6353d896882df8383accf7e80"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ed98ce338f9a65c90cb930b088f1eb36de7181af"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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