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CVE-2025-39963 io_uring: fix incorrect io_kiocb reference in io_link_skb

🗓️ 09 Oct 2025 12:13:23Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 5 Views

Linux kernel fix for io_link_skb misusing prev_notif; uses prev_nd for prior notification comparison.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "io_uring/notif.c"
    ],
    "versions": [
      {
        "version": "6fe4220912d19152a26ce19713ab232f4263018d",
        "lessThan": "a89c34babc2e5834aa0905278f26f4dbe4b26b76",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6fe4220912d19152a26ce19713ab232f4263018d",
        "lessThan": "50a98ce1ea694f1ff8e87bc2f8f84096d1736f6a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6fe4220912d19152a26ce19713ab232f4263018d",
        "lessThan": "2c139a47eff8de24e3350dadb4c9d5e3426db826",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "io_uring/notif.c"
    ],
    "versions": [
      {
        "version": "6.10",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.10",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.49",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.16.9",
        "lessThanOrEqual": "6.16.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.17",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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