CVE-2026-68353

wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler

HIGH
8.1
CVSS Score
Published: August 10, 2026 at 12:03 PM UTC
Updated: October 19, 2026 at 10:17 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler The firmware-controlled num_msg field (u8, 0-255) drives the loop in ath6kl_wmi_tx_complete_event_rx() without validation against the buffer length. This allows out-of-bounds reads of up to 1020 bytes past the WMI event buffer when the firmware sends an inflated num_msg. Add a check that the buffer is large enough to hold the fixed struct and the num_msg variable-length entries.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

3.2bdcd81707973cf8aa9305337166f8ee842a050d4
Vendor states this is fixed in 0e0fc04af9b443c6b425f00fb604ff599bc80d1d (fixed)
Vendor states this is fixed in 289edc3c71344b89e6522891147cfb8f61b088bb (fixed)
Vendor states this is fixed in 35196a07603f8c94a4943093bc26d5b5826285f8 (fixed)
Vendor states this is fixed in 3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495 (fixed)
Vendor states this is fixed in 5297299c3fa6133275db0be99d69cd759b6cbfe9 (fixed)
Vendor states this is fixed in 69ac7ba3a3df6654e7daa82674575a8c4a1a63ea (fixed)
Vendor states this is fixed in c38b0d5c661951b5dd082bdf31f8a57a0ce6e540 (fixed)
Vendor states this is fixed in eb636fbc443149b3501c3f97e26225ddcb314a0f (fixed)
Vendor states this is fixed in 3.2 (unaffected)
Vendor states this is fixed in 5.10.265 (unaffected)
Vendor states this is fixed in 5.15.216 (unaffected)
Vendor states this is fixed in 6.1.183 (unaffected)
Vendor states this is fixed in 6.12.101 (unaffected)
Vendor states this is fixed in 6.18.42 (unaffected)
Vendor states this is fixed in 6.6.148 (unaffected)
Vendor states this is fixed in 7.1.6 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHLinux
Vector?

Quick Info

StatusRECEIVED
CWE
CWE-125

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