CVE-2026-80557

🗓️ 26 Aug 2026 14:37:24Reported by LinuxType

OOB read in Linux kernel libceph decode_watchers() via missing bounds check on ceph_decode_32.

Reporter	Title	Published	Views	Family All 9
Circl	CVE-2026-80557	27 Aug 202608:30	–	circl
Cvelist	CVE-2026-80557 libceph: fix OOB read in decode_watchers() via missing bounds check	26 Aug 202614:37	–	cvelist
Debian CVE	CVE-2026-80557	26 Aug 202614:37	–	debiancve
EUVD	EUVD-2026-66472	27 Aug 202606:31	–	euvd
NVD	CVE-2026-80557	26 Aug 202615:17	–	nvd
OSV	DEBIAN-CVE-2026-80557	26 Aug 202615:17	–	osv
Positive Technologies	PT-2026-82173	26 Aug 202600:00	–	ptsecurity
RedhatCVE	CVE-2026-80557	27 Aug 202607:15	–	redhatcve
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2026-80557	26 Aug 202600:00	–	nessus

Vulners

CNA

Node

linux linux_kernelRange4.9–5.10.267

linux linux_kernelRange5.11.0–5.15.218

linux linux_kernelRange5.16.0–6.1.185

linux linux_kernelRange6.2.0–6.6.154

linux linux_kernelRange6.7.0–6.12.106

linux linux_kernelRange6.13.0–6.18.47

linux linux_kernelRange6.19.0–7.1.10

linux linux_kernelRange7.2.0≥

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/ceph/osd_client.c"
    ],
    "versions": [
      {
        "version": "a4ed38d7a180f184a6e7aedd09db9ca4b1e6a71c",
        "lessThan": "85479b7d65b4ebcb07fbbe57230976793974ab4a",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a4ed38d7a180f184a6e7aedd09db9ca4b1e6a71c",
        "lessThan": "1c824e7c75bb4adf19553dd4ea944a5d83096be8",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a4ed38d7a180f184a6e7aedd09db9ca4b1e6a71c",
        "lessThan": "f161be39201eb5f9b1f58fb8f90b8a9cd3931eb6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a4ed38d7a180f184a6e7aedd09db9ca4b1e6a71c",
        "lessThan": "eab3eeb68bfc639d74f27256f05546af5c4f787d",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a4ed38d7a180f184a6e7aedd09db9ca4b1e6a71c",
        "lessThan": "c59219a6b62d74936963983e5815524c3de8dd79",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a4ed38d7a180f184a6e7aedd09db9ca4b1e6a71c",
        "lessThan": "cb8246e5846dbbe34930903a90c7a90dd8e5910b",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a4ed38d7a180f184a6e7aedd09db9ca4b1e6a71c",
        "lessThan": "7130d94846dadbb97b6b7f4d78a3a7bba6e3daa1",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "a4ed38d7a180f184a6e7aedd09db9ca4b1e6a71c",
        "lessThan": "00ead17c7de137a692edee59f2772e6af687e8eb",
        "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/ceph/osd_client.c"
    ],
    "versions": [
      {
        "version": "4.9",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.9",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.10.267",
        "lessThanOrEqual": "5.10.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "5.15.218",
        "lessThanOrEqual": "5.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.185",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.154",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.106",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.47",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.10",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

Source	Link
git	www.git.kernel.org/stable/c/00ead17c7de137a692edee59f2772e6af687e8eb
git	www.git.kernel.org/stable/c/1c824e7c75bb4adf19553dd4ea944a5d83096be8
git	www.git.kernel.org/stable/c/eab3eeb68bfc639d74f27256f05546af5c4f787d
git	www.git.kernel.org/stable/c/f161be39201eb5f9b1f58fb8f90b8a9cd3931eb6
git	www.git.kernel.org/stable/c/7130d94846dadbb97b6b7f4d78a3a7bba6e3daa1
git	www.git.kernel.org/stable/c/85479b7d65b4ebcb07fbbe57230976793974ab4a
git	www.git.kernel.org/stable/c/cb8246e5846dbbe34930903a90c7a90dd8e5910b
git	www.git.kernel.org/stable/c/c59219a6b62d74936963983e5815524c3de8dd79

27 Aug 2026 13:18Current

5.7Medium risk

Vulners AI Score5.7

CVSS 3.19.8