CVE-2026-43113
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.24% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0fd56fad9c56356e7fa7a7c52e7ecbf807a44eb0Patch
- https://git.kernel.org/stable/c/26ee518695c484f75e3606d631278e84bd24ae02Patch
- https://git.kernel.org/stable/c/6509dbece7339dbc8980c706b9d623119a6de105
- https://git.kernel.org/stable/c/8d7465be5163a923ee5d7459719ef5a021c1584aPatch
- https://git.kernel.org/stable/c/a8a11a876f0a97061ee5d9e61d0f5a0df7e241c7
- https://git.kernel.org/stable/c/b6ba1eacf276063ebeefbbae8056043c24f2efafPatch
- https://git.kernel.org/stable/c/df15adc692a802636dd3f258fc7cca8bf7a0ed9aPatch
- https://git.kernel.org/stable/c/e0dc1ad870d6788b049bfe1511ac75b2333a7550
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.