EUVD-2026-27635
GHSA-4c54-jj6j-3j34
CVSS VectorNVD
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionNVD
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.
AnalysisAI
Out-of-bounds array indexing in Linux kernel's wl1251 wireless driver allows adjacent network attackers to achieve high-impact memory corruption without authentication. The wl1251_tx_packet_cb() function uses untrusted firmware completion IDs directly to index a fixed 16-entry tx_frames array without bounds validation, enabling attackers on the same wireless network segment to read/write arbitrary kernel memory. …
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RemediationAI
Within 24 hours: Identify systems running affected wl1251 wireless driver by auditing kernel versions (6.6.x pre-6.6.136, 6.12.x pre-6.12.83, 6.18.x pre-6.18.24, 6.19.x pre-6.19.14, or 7.0.x pre-7.0) and hardware inventory. Within 7 days: Test and deploy kernel updates to patched versions (Linux 6.6.136, 6.12.83, 6.18.24, 6.19.14, or 7.0 stable releases) across all affected systems. …
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