CVE-2025-38013

wifi: mac80211: Set n_channels after allocating struct cfg80211_scan_request

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: Set n_channels after allocating struct cfg80211_scan_request Make sure that n_channels is set after allocating the struct cfg80211_registered_device::int_scan_req member. Seen with syzkaller: UBSAN: array-index-out-of-bounds in net/mac80211/scan.c:1208:5 index 0 is out of range for type 'struct ieee80211_channel *[] __counted_by(n_channels)' (aka 'struct ieee80211_channel *[]') This was missed in the initial conversions because I failed to locate the allocation likely due to the "sizeof(void *)" not matching the "channels" array type.

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/fde33ab3c052a302ee8a0b739094b88ceae4dd67
https://git.kernel.org/stable/c/07c737d9ab02c07b562aefcca16aa95077368e24
https://git.kernel.org/stable/c/e3192e999a0d05ea0ba2c59c09afaf0b8ee70b81
https://git.kernel.org/stable/c/82bbe02b2500ef0a62053fe2eb84773fe31c5a0a

Frequently Asked Questions

What is the severity of CVE-2025-38013?: CVE-2025-38013 has not yet been assigned a CVSS score.
How to fix CVE-2025-38013?: To fix CVE-2025-38013, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-38013 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-38013 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-38013?: CVE-2025-38013 affects Linux Linux, Linux Linux.

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