CVE-2026-89495Medium· 5.5▾ SunlitA flaw was found in ocfs2 in the Linux kernel. A malicious or compromised node within a Distributed Lock Manager (DLM) cluster can send specially crafted messages with unchecked length fields. This can lead to a heap out-of-bounds write, p…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 6.4
none → medium
— → 6.4
none → medium
— → 9.8
none → critical
9.8 → 6.4
critical → medium
6.4 → 9.8
medium → critical
0.2% → 0.7%
Last analysed / modified upstream
9.8 → 5.5
critical → medium
A flaw was found in ocfs2 in the Linux kernel. A malicious or compromised node within a Distributed Lock Manager (DLM) cluster can send specially crafted messages with unchecked length fields. This can lead to a heap out-of-bounds write, potentially allowing for arbitrary code execution, or an out-of-bounds read, which can cause a kernel panic and result in a Denial of Service (DoS).
kernel: ocfs2: bound namelen in dlm_migrate_request_handler — rated Moderate by Red Hat. Released 2026-09-11, updated 2026-09-18.
Not affected:
Refer to the advisory for fix availability.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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