#VU96356 NULL pointer dereference in Linux kernel - CVE-2022-48876

Vulnerability identifier: #VU96356

Vulnerability 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

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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

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External links
https://git.kernel.org/stable/c/a57c981d9f24d2bd89eaa76dc477e8ca252e22e8
https://git.kernel.org/stable/c/e66b7920aa5ac5b1a1997a454004ba9246a3c005

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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.