CVE-2026-98150 Linux Kernel - Denial of Service

Linux kernel contains a validation bypass in BPF_F_CPU flag handling caused by improper CPU ID checks in bpf_map_check_op_flags(), letting attackers trigger kernel paging faults via invalid CPU IDs, exploit requires use of raw bpf() syscalls with crafted CPU IDs.

CVSS base score 7.0 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.10% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
25 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for BPF_F_CPU validation.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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