CVE-2026-68353
Published: August 12, 2026Last modified: August 14, 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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.1 |
| Attack Vector | ADJACENT_NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Vulnerable (6.1.177-r0) |
| 25 LTS | linux-lts | Fixed (6.12.103-r0) | |
| Stream | linux-lts | Fixed (6.18.43-r0) |
References
- https://git.kernel.org/stable/c/0e0fc04af9b443c6b425f00fb604ff599bc80d1d
- https://git.kernel.org/stable/c/289edc3c71344b89e6522891147cfb8f61b088bb
- https://git.kernel.org/stable/c/35196a07603f8c94a4943093bc26d5b5826285f8
- https://git.kernel.org/stable/c/3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495
- https://git.kernel.org/stable/c/5297299c3fa6133275db0be99d69cd759b6cbfe9
- https://git.kernel.org/stable/c/69ac7ba3a3df6654e7daa82674575a8c4a1a63ea
- https://git.kernel.org/stable/c/c38b0d5c661951b5dd082bdf31f8a57a0ce6e540
- https://git.kernel.org/stable/c/eb636fbc443149b3501c3f97e26225ddcb314a0f