NULL pointer dereference in Linux kernel mac80211

1) NULL pointer dereference

EUVDB-ID: #VU96356

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

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: All versions

External links

http://git.kernel.org/stable/c/a57c981d9f24d2bd89eaa76dc477e8ca252e22e8
http://git.kernel.org/stable/c/e66b7920aa5ac5b1a1997a454004ba9246a3c005

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.