VulnerabilityPublished 10 Aug 2026Updated 6 Nov 2026

CVE-2026-68355: Linux kernel · wifi: ath11k: fix potential buffer underflow in ath11k_hal_rx_msdu_list_get()

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in a154ca3c441a67d36b3a9ea63a4f11b06abe6223 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:04 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 a154ca3c441a67d36b3a9ea63a4f11b06abe6223, 904367381a922aa2dc3e8bd2488e6c9180516c7a, 725c1c3a8c5d920a7d3f5887412f2ad8e95a74f5 +5

Exploitation evidence

Disclosed: evidence found.
CVE published 10 Aug 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 to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ d5c65159f2895379e11ca13f62feabe93278985d, < a154ca3c441a67d36b3a9ea63a4f11b06abe6223	Fixed in a154ca3c441a67d36b3a9ea63a4f11b06abe6223
LinuxLinux	Affected ≥ d5c65159f2895379e11ca13f62feabe93278985d, < 904367381a922aa2dc3e8bd2488e6c9180516c7a	Fixed in 904367381a922aa2dc3e8bd2488e6c9180516c7a
LinuxLinux	Affected ≥ d5c65159f2895379e11ca13f62feabe93278985d, < 725c1c3a8c5d920a7d3f5887412f2ad8e95a74f5	Fixed in 725c1c3a8c5d920a7d3f5887412f2ad8e95a74f5
LinuxLinux	Affected ≥ d5c65159f2895379e11ca13f62feabe93278985d, < 085a5fde5bac29c01059e69399b417e91c0a6c18	Fixed in 085a5fde5bac29c01059e69399b417e91c0a6c18
LinuxLinux	Affected ≥ d5c65159f2895379e11ca13f62feabe93278985d, < 69a6a4f60b2da92c0bdfd9264b8ffe053f51f52a	Fixed in 69a6a4f60b2da92c0bdfd9264b8ffe053f51f52a
LinuxLinux	Affected ≥ d5c65159f2895379e11ca13f62feabe93278985d, < 31ea4b175bc3ab430be15834d9ee8a1ce65bee15	Fixed in 31ea4b175bc3ab430be15834d9ee8a1ce65bee15

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix potential buffer underflow in ath11k_hal_rx_msdu_list_get() When the first entry in msdu_details has a zero buffer address, the code accesses msdu_details[i - 1] with i == 0, causing a buffer underflow. Fix similarly to ath12k_wifi7_hal_rx_msdu_list_get() by adding a separate check for i == 0 before the main condition to prevent the out-of-bounds access. Found by Linux Verification Center (linuxtesting.org) with SVACE.

References

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