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CVE-2026-89538 SUNRPC: Reject krb5 v2 wrap tokens with oversized ec field

🗓️ 11 Sep 2026 19:44:15Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 51 Views

Linux kernel SUNRPC fails to reject krb5 v2 tokens with oversized ec field, corrupting buffer state.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/sunrpc/auth_gss/gss_krb5_wrap.c"
    ],
    "versions": [
      {
        "version": "cf4c024b908353fcc48309374d39e3399d67dfd1",
        "lessThan": "ac9efc29346b6942e71f0e24a3178a9121330fab",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf4c024b908353fcc48309374d39e3399d67dfd1",
        "lessThan": "b5746095b59f4d11f39f08751d36bbdfd1e5deac",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf4c024b908353fcc48309374d39e3399d67dfd1",
        "lessThan": "9fc6d6e6db49ab55208d5dd1c424c1d0d9aa7296",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf4c024b908353fcc48309374d39e3399d67dfd1",
        "lessThan": "4abb44a29bb515df6f49123848765c70fc9b5021",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf4c024b908353fcc48309374d39e3399d67dfd1",
        "lessThan": "dfcd81ab45613d45996fbf483d4ef54b0ec90ab9",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf4c024b908353fcc48309374d39e3399d67dfd1",
        "lessThan": "1f9856af065b6158271687e9788407b9573fd16f",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf4c024b908353fcc48309374d39e3399d67dfd1",
        "lessThan": "880effc943ed82d6811f272ed3307c222b40f4d6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf4c024b908353fcc48309374d39e3399d67dfd1",
        "lessThan": "ad484748eec0a66eac0f13ab53b3fbedb7333c91",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/sunrpc/auth_gss/gss_krb5_wrap.c"
    ],
    "versions": [
      {
        "version": "3.13",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.13",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.270",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.221",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.188",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.157",
        "lessThanOrEqual": "6.6.*",
        "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",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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