NULL pointer dereference in Linux
CVE-2023-53071
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: do not run mt76_unregister_device() on unregistered hw Trying to probe a mt7921e pci card without firmware results in a successful probe where ieee80211_register_hw hasn't been called. When removing the driver, ieee802111_unregister_hw is called unconditionally leading to a kernel NULL pointer dereference. Fix the issue running mt76_unregister_device routine just for registered hw.
EPSS: 0.002 (7.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Linux — versions 1c71e03afe4b457a15e50de40006b927dfc00755, 5.18, 0
- Linux Linux_kernel — versions 6.3
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2023-53071?
- CVE-2023-53071 is a medium-severity vulnerability in Linux, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2025-05-02.
- How severe is CVE-2023-53071?
- Medium severity. CVSS v3 base score is 5.5 out of 10.