CVE-2025-39750

wifi: ath12k: Correct tid cleanup when tid setup fails

State: Published
Severity: 8.8 High
Published: Sep 11, 2025
Updated: Oct 15, 2026
Reserved: Apr 16, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath12k: Correct tid cleanup when tid setup fails

Currently, if any error occurs during ath12k_dp_rx_peer_tid_setup(), the tid value is already incremented, even though the corresponding TID is not actually allocated. Proceed to ath12k_dp_rx_peer_tid_delete() starting from unallocated tid, which might leads to freeing unallocated TID and cause potential crash or out-of-bounds access.

Hence, fix by correctly decrementing tid before cleanup to match only the successfully allocated TIDs.

Also, remove tid-- from failure case of ath12k_dp_rx_peer_frag_setup(), as decrementing the tid before cleanup in loop will take care of this.

Compile tested only.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 30cad87978057516c93467516bc481a3eacfd66aAffected d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 2ef17d1476ab26bce89764e2f16833d7f52acc38Affected d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 907c630e58af9e86e215f3951c7b287bd86d0f15Affected d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 6301fe4f209165334d251a1c6da8ae47f93cb32cAffected d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 4a2bf707270f897ab8077baee8ed5842a5321686Affected
LinuxLinux	6.3Affected before 6.3Not affected 6.6.103 through 6.6.Not affected 6.12.43 through 6.12.Not affected 6.15.11 through 6.15.Not affected 6.16.2 through 6.16.Not affected 6.17 and laterNot affected

Product

Versions

LinuxLinux

d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 30cad87978057516c93467516bc481a3eacfd66aAffected
d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 2ef17d1476ab26bce89764e2f16833d7f52acc38Affected
d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 907c630e58af9e86e215f3951c7b287bd86d0f15Affected
d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 6301fe4f209165334d251a1c6da8ae47f93cb32cAffected
d889913205cf7ebda905b1e62c5867ed4e39f6c2 to before 4a2bf707270f897ab8077baee8ed5842a5321686Affected

LinuxLinux

6.3Affected
before 6.3Not affected
6.6.103 through 6.6.*Not affected
6.12.43 through 6.12.*Not affected
6.15.11 through 6.15.*Not affected
6.16.2 through 6.16.*Not affected
6.17 and laterNot affected

References

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