CVE-2026-98588Medium· 4.1▾ SunlitA flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) subsystem. When allocating a socket map with an excessively large entry count, a signed integer overflow occurs during cleanup when the map is released. A local user with …
▾ 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
Last analysed / modified upstream
0.2%
— → 4.1
none → medium
0.2% → 0.2%
A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) subsystem. When allocating a socket map with an excessively large entry count, a signed integer overflow occurs during cleanup when the map is released. A local user with permission to create BPF maps can trigger this issue to cause an out-of-bounds memory write, leading to kernel memory corruption or a Denial of Service (DoS) through a system crash.
kernel: bpf, sockmap: Reject max_entries > INT_MAX in sock_map_alloc — rated Moderate by Red Hat. Released 2026-10-18, updated 2026-10-20.
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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