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CVE-2026-89607 ecryptfs: reject oversized encrypted_key_size in parse_tag_3_packet

🗓️ 11 Sep 2026 19:45:09Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

OOB write in Linux kernel ecryptfs parse_tag_3_packet when encrypted_key_size exceeds 64 bytes.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-89607
11 Sep 202619:45
cve
euvd
EUVD
EUVD-2026-76519
11 Sep 202619:45
euvd
nvd
NVD
CVE-2026-89607
11 Sep 202620:19
nvd
ptsecurity
Positive Technologies
PT-2026-90323
11 Sep 202600:00
ptsecurity
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ecryptfs/keystore.c"
    ],
    "versions": [
      {
        "version": "237fead619984cc48818fe12ee0ceada3f55b012",
        "lessThan": "ccd13eff0e7356d2aa28b127b577e4e5ad4563f5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "237fead619984cc48818fe12ee0ceada3f55b012",
        "lessThan": "14cb36a500a5a3afbc955dbf69dabc565f1a3b26",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "237fead619984cc48818fe12ee0ceada3f55b012",
        "lessThan": "a419c9ebfc9a40ee56aaad6dc68bfd67d400817b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "237fead619984cc48818fe12ee0ceada3f55b012",
        "lessThan": "5babe9c177c364521e3e682b949c5a8c47f4a441",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "fs/ecryptfs/keystore.c"
    ],
    "versions": [
      {
        "version": "2.6.19",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.19",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.109",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.50",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.4",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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