CVE-2026-68353

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

State: Published
Severity: 8.1 High
Published: Aug 10, 2026
Updated: Oct 19, 2026
Reserved: Jul 30, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H	Linux

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
LinuxLinux	bdcd81707973cf8aa9305337166f8ee842a050d4 to before 5297299c3fa6133275db0be99d69cd759b6cbfe9Affected bdcd81707973cf8aa9305337166f8ee842a050d4 to before 35196a07603f8c94a4943093bc26d5b5826285f8Affected bdcd81707973cf8aa9305337166f8ee842a050d4 to before 0e0fc04af9b443c6b425f00fb604ff599bc80d1dAffected bdcd81707973cf8aa9305337166f8ee842a050d4 to before 69ac7ba3a3df6654e7daa82674575a8c4a1a63eaAffected bdcd81707973cf8aa9305337166f8ee842a050d4 to before 289edc3c71344b89e6522891147cfb8f61b088bbAffected bdcd81707973cf8aa9305337166f8ee842a050d4 to before eb636fbc443149b3501c3f97e26225ddcb314a0fAffected bdcd81707973cf8aa9305337166f8ee842a050d4 to before c38b0d5c661951b5dd082bdf31f8a57a0ce6e540Affected bdcd81707973cf8aa9305337166f8ee842a050d4 to before 3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495Affected
LinuxLinux	3.2Affected before 3.2Not affected 5.10.265 through 5.10.Not affected 5.15.216 through 5.15.Not affected 6.1.183 through 6.1.Not affected 6.6.148 through 6.6.Not affected 6.12.101 through 6.12.Not affected 6.18.42 through 6.18.Not affected 7.1.6 through 7.1.*Not affected 7.2 and laterNot affected

Product

Versions

LinuxLinux

bdcd81707973cf8aa9305337166f8ee842a050d4 to before 5297299c3fa6133275db0be99d69cd759b6cbfe9Affected
bdcd81707973cf8aa9305337166f8ee842a050d4 to before 35196a07603f8c94a4943093bc26d5b5826285f8Affected
bdcd81707973cf8aa9305337166f8ee842a050d4 to before 0e0fc04af9b443c6b425f00fb604ff599bc80d1dAffected
bdcd81707973cf8aa9305337166f8ee842a050d4 to before 69ac7ba3a3df6654e7daa82674575a8c4a1a63eaAffected
bdcd81707973cf8aa9305337166f8ee842a050d4 to before 289edc3c71344b89e6522891147cfb8f61b088bbAffected
bdcd81707973cf8aa9305337166f8ee842a050d4 to before eb636fbc443149b3501c3f97e26225ddcb314a0fAffected
bdcd81707973cf8aa9305337166f8ee842a050d4 to before c38b0d5c661951b5dd082bdf31f8a57a0ce6e540Affected
bdcd81707973cf8aa9305337166f8ee842a050d4 to before 3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495Affected

LinuxLinux

3.2Affected
before 3.2Not affected
5.10.265 through 5.10.*Not affected
5.15.216 through 5.15.*Not affected
6.1.183 through 6.1.*Not affected
6.6.148 through 6.6.*Not affected
6.12.101 through 6.12.*Not affected
6.18.42 through 6.18.*Not affected
7.1.6 through 7.1.*Not affected
7.2 and laterNot affected

References

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