CVE-2024-56535: wifi: rtw89: coex: check NULL return of kmalloc in btc_fw_set_monreg()

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-12-27 · updated 2026-06-17
Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: coex: check NULL return of kmalloc in btc_fw_set_monreg() kmalloc may fail, return value might be NULL and will cause NULL pointer dereference. Add check NULL return of kmalloc in btc_fw_set_monreg().

Affected products

Linux kernel: from 6.10 before 6.11.11; from 6.12 before 6.12.2 — fixed in 6.11.11, 6.12.2

How to fix

Upgrade to a fixed version: Linux kernel 6.11.11, 6.12.2. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/051577414271961f3f4c3bff87b427924b486219
https://git.kernel.org/stable/c/64db1a42d98307001a48cec1b3e68ce9f905e73d
https://git.kernel.org/stable/c/81df5ed446b448bdc327b7c7f0b50121fc1f4aa2

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