CVE-2026-98543Medium· 4.1▾ SunlitA flaw was found in the Linux kernel. A local privileged user could cause a Denial of Service (DoS) or file system corruption due to improper locking in the BPF (Berkeley Packet Filter) subsystem. When attaching sleepable BPF programs to c…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 22.5 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
Last analysed / modified upstream
— → 7.3
none → high
7.3 → 4.1
high → medium
A flaw was found in the Linux kernel. A local privileged user could cause a Denial of Service (DoS) or file system corruption due to improper locking in the BPF (Berkeley Packet Filter) subsystem. When attaching sleepable BPF programs to certain file removal hooks, the kernel verifier incorrectly assumes an inode lock is held, permitting extended attributes to be modified concurrently without synchronization.
kernel: bpf: fs/xattr: don't assume the inode is locked in path_unlink/path_rmdir — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-24.
Affected:
No fix planned:
Not affected:
Fix deferred
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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