NULL pointer dereference in Linux kernel mac80211



| Updated: 2025-05-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-48876
CWE-ID CWE-476
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU96356

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-48876

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the ieee80211_invoke_rx_handlers(), ieee80211_release_reorder_timeout(), ieee80211_mark_rx_ba_filtered_frames(), ieee80211_check_fast_rx_iface(), ieee80211_invoke_fast_rx(), ieee80211_prepare_and_rx_handle(), __ieee80211_rx_handle_8023(), ieee80211_rx_for_interface() and __ieee80211_rx_handle_packet() functions in net/mac80211/rx.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.1 - 6.2 rc7

CPE2.3 External links

https://git.kernel.org/stable/c/a57c981d9f24d2bd89eaa76dc477e8ca252e22e8
https://git.kernel.org/stable/c/e66b7920aa5ac5b1a1997a454004ba9246a3c005
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.8
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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