SUSE update for kernel-firmware

1) Use-after-free

EUVDB-ID: #VU78572

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-20593

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error in AMD Zen2 processors. A local user can trigger a use-after-free error and execute arbitrary code on the system.

Note, the vulnerability was dubbed Zenbleed.

Mitigation

Update the affected package kernel-firmware to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 12 SP2 BCL: 12-SP2

SUSE Linux Enterprise Server 12: SP2

SUSE Linux Enterprise High Performance Computing 12: SP2

kernel-firmware: before 20170530-21.37.1

ucode-amd: before 20170530-21.37.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_server_12_sp2_bcl:12-SP2:*:*:*:*:*:*:
• cpe:2.3:o:suse:suse_linux_enterprise_server_12:SP2:*:*:*:*:*:*:
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_12:SP2:*:*:*:*:*:*:

External links

http://www.suse.com/support/update/announcement/2023/suse-su-20232986-1/

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.