VulnerabilityPublished 6 May 2026Updated 6 Nov 2026

CVE-2026-43267: Linux kernel · wifi: rtw89: fix potential zero beacon interval in beacon tracking

Affects Linux kernelSource CVE Database V5

Compare

Not known to be exploited · fixed in eb57be32f438c57c88d6ce756101c1dfbcc03bba : update Linux kernel when convenient.

Data as of 6 Nov 2026, 15:49 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in eb57be32f438c57c88d6ce756101c1dfbcc03bba, e00c9a4ec84c0bb067833b34202f457badbbc1c1, 1260bee01493126cf9c872b6ca2af261173baa6d

Exploitation evidence

Disclosed: evidence found.
CVE published 6 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 6 Nov 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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 eb57be32f438c57c88d6ce756101c1dfbcc03bba, e00c9a4ec84c0bb067833b34202f457badbbc1c1 or 1260bee01493126cf9c872b6ca2af261173baa6d.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ d360551f265e3c942ce06cd6f4d2f7f67741bcbd, < eb57be32f438c57c88d6ce756101c1dfbcc03bba	Fixed in eb57be32f438c57c88d6ce756101c1dfbcc03bba
LinuxLinux	Affected ≥ d360551f265e3c942ce06cd6f4d2f7f67741bcbd, < e00c9a4ec84c0bb067833b34202f457badbbc1c1	Fixed in e00c9a4ec84c0bb067833b34202f457badbbc1c1
LinuxLinux	Affected ≥ d360551f265e3c942ce06cd6f4d2f7f67741bcbd, < 1260bee01493126cf9c872b6ca2af261173baa6d	Fixed in 1260bee01493126cf9c872b6ca2af261173baa6d
LinuxLinux	Affected =6.18	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: fix potential zero beacon interval in beacon tracking During fuzz testing, it was discovered that bss_conf->beacon_int might be zero, which could result in a division by zero error in subsequent calculations. Set a default value of 100 TU if the interval is zero to ensure stability.

References

Community reviews

Loading reviews…