In the Linux kernel, the following vulnerability has been resolved:
wifi: libipw: fix key index receive bound checks
libipw_rx() reads skb->data[hdrlen + 3] to extract the WEP key index in
both the software-decrypt key selection path and the hardware-decrypted
IV/ICV strip path. In both places the existing guard only checks
skb->len >= hdrlen + 3, which proves bytes up to hdrlen + 2 but not the
byte at hdrlen + 3. Require hdrlen + 4 bytes before reading that item in both paths.
This is
a local source-boundary check only; it does not change the key index
semantics.
Ссылки 3
https://git.kernel.org/stable/c/062840bdc9ee06169b3c371bf66711f1d7ec0bf4
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/74ed3669f26803b1761c1f55403062bea44c3466
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c54b643e9a0936d038921c547736574fd7382cea
416baaa9-dc9f-4396-8d5f-8c081fb06d67