SUSE update for the Linux Kernel (Live Patch 3 for SLE 15 SP4)

1) NULL pointer dereference

EUVDB-ID: #VU68317

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-42722

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the mac80211 stack in Linux kernel. A remote attacker on the local network can send specially crafted WLAN frames to the affected system and perform a denial of service (DoS) attack against the beacon protection of P2P devices.

Mitigation

Update the affected package the Linux Kernel (Live Patch 3 for SLE 15 SP4) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Live Patching: 15-SP4

SUSE Linux Enterprise Server: 15-SP4

SUSE Linux Enterprise Server for SAP Applications: 15-SP4

SUSE Linux Enterprise High Performance Computing: 15-SP4

kernel-livepatch-SLE15-SP4_Update_3-debugsource: before 4-150400.2.1

kernel-livepatch-5_14_21-150400_24_21-default-debuginfo: before 4-150400.2.1

kernel-livepatch-5_14_21-150400_24_21-default: before 4-150400.2.1

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20223976-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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