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

lowCVSS 2.5CVE-2026-68355

CSIRTS triage

vendor: Linux product: Linux Kernel Memory corruption

What: A potential buffer underflow exists in the ath11k WiFi driver's MSDU list parsing function.
Who is affected: Systems running affected versions of the Linux kernel with Qualcomm ath11k WiFi driver.
Urgency: Low severity (CVSS 2.5); buffer underflow requires specific packet conditions and has limited impact.
Action: Apply Linux kernel patch addressing CVE-2026-68355 or update to a patched kernel version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: low — CVSS 2.5
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68355

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-683550.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-68355	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownCVE-2026-68355: In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix potentia…nvd

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