CVE-2023-3317
kernel: use-after-free in wifi mt7921 fw features query
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 22, 2023
Updated · November 21, 2025
Description
A use-after-free flaw was found in mt7921_check_offload_capability in drivers/net/wireless/mediatek/mt76/mt7921/init.c in the wifi mt76/mt7921 sub-component of the Linux Kernel. This issue could allow an attacker to crash the system after the 'features' memory releases which could lead to a kernel information leak.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE-416 · Use After Free