wifi: b43legacy: enforce bounds check on firmware key index in RX path
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 97% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
wifi: b43legacy: enforce bounds check on firmware key index in RX path
Same fix as b43: the firmware-controlled key index in b43legacy_rx()
can exceed dev->max_nr_keys. The existing B43legacy_WARN_ON is
non-enforcing in production builds, allowing an out-of-bounds read of
dev->key[].
Make the check enforcing by dropping the frame for invalid indices.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/1baaeb6adecb9691748c0253dab6ddd19a2b4e9ehttps://git.kernel.org/stable/c/4242db36de99de734cc1f60e5edd86cda7e598c6https://git.kernel.org/stable/c/6ee946077607d7783ae6709a899213fc4fe08f35https://git.kernel.org/stable/c/9d1bc155802943e92c57a5fb923d23edfbf0b525https://git.kernel.org/stable/c/a035766f970bde2d4298346a31a80685be5c0205https://git.kernel.org/stable/c/a92bd0503df2488f2cc040f329ebccff1c1934cbhttps://git.kernel.org/stable/c/df805c1d085b7a96077f0964185764c87060950dhttps://git.kernel.org/stable/c/fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5