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CVE-2026-74597 ip6_tunnel: clear skb2->cb[] in ip6ip6_err()

🗓️ 22 Aug 2026 15:31:47Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 29 Views

Linux kernel ip6_tunnel stale skb->cb in ip6ip6_err() causes OOB access corrupting skb_shared_info.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ipv6/ip6_tunnel.c"
    ],
    "versions": [
      {
        "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
        "lessThan": "44fe898df302e91c5ee5acbc71ffa74e78e6c183",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
        "lessThan": "0dadb0620ab65949a8bc2439dd28ea3c942fe87d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
        "lessThan": "b6816536a2990c0db44a26130a03e40b441e829b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
        "lessThan": "64e41736a26f37ab6215bc2e6df125df05aceb08",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
        "lessThan": "484134e1eb07d700a73b1e4bbf3fb503e299be60",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
        "lessThan": "4eb15c465337b18f44716c499cd6ad63eee0ad54",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
        "lessThan": "fbf40faa0414b753212494ad197542002e66ed9e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
        "lessThan": "f803c086399da277b5d0ff36a107d0f162751800",
        "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/ipv6/ip6_tunnel.c"
    ],
    "versions": [
      {
        "version": "2.6.22",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "2.6.22",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.265",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.216",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.183",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.152",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.104",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.45",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.9",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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