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CVE-2026-99266 io_uring/zcrx: fix buffer offsets in areas above 4GB

🗓️ 03 Nov 2026 11:48:17Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 13 Views

Buffer offset calculation error in Linux kernel io_uring/zcrx leads to data corruption.

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/zcrx.c"
    ],
    "versions": [
      {
        "version": "11ed914bbf948c4a37248f2876973ac18014056d",
        "lessThan": "9bfb315e2d0907fbcaf5d0453dd6d873c9aa8d5b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "11ed914bbf948c4a37248f2876973ac18014056d",
        "lessThan": "51f4ee29bf0564e6ae7d3540693a9bc1dd2c8fd7",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "11ed914bbf948c4a37248f2876973ac18014056d",
        "lessThan": "ab4536bf2e5617b04f2d9396f06393c7bbfb071d",
        "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/zcrx.c"
    ],
    "versions": [
      {
        "version": "6.15",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.15",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.60",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.14",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.4-rc1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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