CVE-2026-43113
Published: May 7, 2026Last modified: June 2, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: wl1251: validate packet IDs before indexing tx_frames wl1251_tx_packet_cb() uses the firmware completion ID directly to index the fixed 16-entry wl->tx_frames[] array. The ID is a raw u8 from the completion block, and the callback does not currently verify that it fits the array before dereferencing it. Reject completion IDs that fall outside wl->tx_frames[] and keep the existing NULL check in the same guard. This keeps the fix local to the trust boundary and avoids touching the rest of the completion flow.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.8 |
| Attack Vector | ADJACENT_NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.175-r0) |
| 25 LTS | linux-lts | Fixed (6.12.85-r0) | |
| Stream | linux-lts | Fixed (6.12.85-r0) |
References
- https://git.kernel.org/stable/c/0fd56fad9c56356e7fa7a7c52e7ecbf807a44eb0
- https://git.kernel.org/stable/c/26ee518695c484f75e3606d631278e84bd24ae02
- https://git.kernel.org/stable/c/6509dbece7339dbc8980c706b9d623119a6de105
- https://git.kernel.org/stable/c/8d7465be5163a923ee5d7459719ef5a021c1584a
- https://git.kernel.org/stable/c/a8a11a876f0a97061ee5d9e61d0f5a0df7e241c7
- https://git.kernel.org/stable/c/b6ba1eacf276063ebeefbbae8056043c24f2efaf
- https://git.kernel.org/stable/c/df15adc692a802636dd3f258fc7cca8bf7a0ed9a
- https://git.kernel.org/stable/c/e0dc1ad870d6788b049bfe1511ac75b2333a7550