CVE-2026-93043
kernel: bpf: Disallow interpreter fallback for gotox insn
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 20, 2026
Description
A flaw was found in the Linux kernel's Berkeley Packet Filter (BPF) component. A local attacker could craft a BPF program that uses an insn_array map with a specific instruction (BPF_JMP|BPF_JA|BPF_X) not recognized by the BPF interpreter. This misinterpretation leads to a kernel bug, causing a system crash and resulting in a Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-390 · Detection of Error Condition Without Action