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CVE-2026-93044

bpf: Disallow interpreter fallback for arena-related insns

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Disallow interpreter fallback for arena-related insns Since the interpreter does not support the arena-related insns, interpreter fallback should not be allowed for these insns in core.c::__bpf_prog_select_runtime(). Currently, when the interpreter executes the arena ST/LDX/STX insns, it would hit the BUG_ON() in ___bpf_prog_run() at run time. [ 2.579196] BPF interpreter: unknown opcode a2 (imm: 0x0) [ 2.579998] ------------[ cut here ]------------ [ 2.580652] kernel BUG at kernel/bpf/core.c:2349! [ 2.581314] Oops: invalid opcode: 0000 [#1] SMP PTI Set jit_required as true when arena map is used in the prog to disallow interpreter fallback for arena-related insns.

Timeline

  1. ID reserved

    By Linux

  2. Published

  3. · 32 days later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.

EPSS (exploitation in 30 days)
0.20% · top 90% of all CVEs (10 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.

Affected products

  • Linux · Linux

    • affected 6082b6c328b5486da2b356eae94b8b83c98b5565 – < 408b6d3bc19c4aa852ab7ee2f447756e52e69967
    • affected 6082b6c328b5486da2b356eae94b8b83c98b5565 – < 34746b5a84ec37c0ea2bf6808c65c5ed8790eb51
  • Linux · Linux

    • affected 6.9
    • unaffected < 6.9
    • unaffected 7.2.6 – ≤ 7.2.*
    • unaffected 7.3 – ≤ *

References

2

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .