Vulnerability in Linux

[ Description ]Official description

In the Linux kernel, the following vulnerability has been resolved: wifi: libertas: reject short monitor TX frames In monitor mode, lbs_hard_start_xmit() casts skb->data to a radiotap TX header, skips that header, and then copies the 802.11 destination address from offset 4 in the remaining frame. The generic length check only rejects zero-length and oversized skbs, so a short monitor frame can be read past the end of the skb data. Require enough bytes for the radiotap TX header and the destination address field before using the monitor-mode header layout.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• git.kernel.org/stable/c/13ff543e0b2c713aedeaadadde686686e949dc78
• git.kernel.org/stable/c/443fac3de65c76544b450b9f9903be8989150d55
• git.kernel.org/stable/c/6576baa3fdbaa91fa75e4ba27095f4b8a27349a8
• git.kernel.org/stable/c/68c92c991ddb75dfd3fd62a94a1d4d2dde44dc3c
• git.kernel.org/stable/c/b657cc98d7936c5d9ed7e0e1944ad0e1f36375bb
• git.kernel.org/stable/c/cdcfd662c67833d89ee3d912efde2eb67c8a7326
• git.kernel.org/stable/c/d865dd6de8295f2bfaa83f0f5d49d2bef1543065