VulnerabilityPublished 17 Sep 2026Updated 19 Oct 2026

CVE-2026-93043: Linux kernel · bpf: Disallow interpreter fallback for gotox insn

Affects Linux kernelSource CVE Database V5

Not known to be exploited : upgrade to 905f716362e1186c1a23447ca279e6d21f795cdb or 17da80d0c7b56579476b6644120bcfea778e531a when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 905f716362e1186c1a23447ca279e6d21f795cdb, 17da80d0c7b56579476b6644120bcfea778e531a

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade Linux kernel to 905f716362e1186c1a23447ca279e6d21f795cdb or 17da80d0c7b56579476b6644120bcfea778e531a.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 493d9e0d608339a32f568504d5fd411a261bb0af, < 905f716362e1186c1a23447ca279e6d21f795cdb	Fixed in 905f716362e1186c1a23447ca279e6d21f795cdb
LinuxLinux	Affected ≥ 493d9e0d608339a32f568504d5fd411a261bb0af, < 17da80d0c7b56579476b6644120bcfea778e531a	Fixed in 17da80d0c7b56579476b6644120bcfea778e531a
LinuxLinux	Affected =6.19	Fixed in–

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().

References

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