CVE-2026-74340high

wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.1epss 0.4%

exploitation probability

0.4%top 67% of all CVEs

observed exploitation

nono source reports it

In the Linux kernel, the following vulnerability has been resolved: wifi: wcn36xx: fix OOB read from firmware count in PRINT_REG_INFO indication The firmware-controlled rsp->count field is used as the loop bound for indexing into the flexible rsp->regs[] array without validation against the message length. A count exceeding the actual data causes out-of- bounds reads from the heap-allocated message buffer. Add a check that count fits within the received message.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

Linux · Linux

References

https://git.kernel.org/stable/c/0907c06dccae9e3c8d5a68eb9014beec73a36e79 https://git.kernel.org/stable/c/22b0b8572a64362531dd0ed499b75e16282aeb2b https://git.kernel.org/stable/c/23d210877968657bd07e1a517e0b516db20a1d80 https://git.kernel.org/stable/c/3cf92b44c4fb88a5e8de8733a4494c0956606bca https://git.kernel.org/stable/c/64228dfc4247aca178c01e5a37af7d8dcc7a6089 https://git.kernel.org/stable/c/df2187acfca6c6cca372c5d35f42394d9c270b09 https://git.kernel.org/stable/c/f03782f7f41f2afee5076a1ef08ced5649218771 https://git.kernel.org/stable/c/f987efff29a5fe45320ea5991c9d5cb98b676953