Riskcovery

CVE-2026-93043

bpf: Disallow interpreter fallback for gotox insn

State
Published
Severity
Not scored
Published
Sep 17, 2026
Updated
Oct 19, 2026
Reserved
Sep 17, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

bpf: Disallow interpreter fallback for gotox insn

The interpreter does not recognize the BPF_JMP|BPF_JA|BPF_X insn, which is used for insn_array map. Thereafter, it would hit the BUG_ON() in ___bpf_prog_run() at run time.

[ 2.563726] BPF interpreter: unknown opcode 0d (imm: 0x0) [ 2.564557] ------------[ cut here ]------------ [ 2.565206] kernel BUG at kernel/bpf/core.c:2349! [ 2.565882] Oops: invalid opcode: 0000 [#1] SMP PTI

Set jit_required as true when insn_array map is used in the prog in order to disallow interpreter fallback for gotox insn in core.c::__bpf_prog_select_runtime().

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 493d9e0d608339a32f568504d5fd411a261bb0af to before 17da80d0c7b56579476b6644120bcfea778e531aAffected
  • 493d9e0d608339a32f568504d5fd411a261bb0af to before 905f716362e1186c1a23447ca279e6d21f795cdbAffected
LinuxLinux
  • 6.19Affected
  • before 6.19Not affected
  • 7.2.6 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

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