SUSE update for the Linux Kernel (Live Patch 30 for SLE 15 SP1)

1) Use-after-free

EUVDB-ID: #VU64434

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-2022-1652

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 use-after-free error in the bad_flp_intr() function. A local user can execute a specially-crafted program to cause a denial of service condition on the system or escalate privileges on the system.

Mitigation

Update the affected package the Linux Kernel (Live Patch 30 for SLE 15 SP1) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications: 15-SP1

SUSE Linux Enterprise Server: 15-SP1

SUSE Linux Enterprise Module for Live Patching: 15-SP1

SUSE Linux Enterprise High Performance Computing: 15-SP1

SUSE Linux Enterprise Live Patching: 12-SP5

kgraft-patch-4_12_14-122_121-default: before 6-2.2

kgraft-patch-4_12_14-122_113-default: before 10-2.2

kernel-livepatch-4_12_14-197_105-default: before 10-150100.2.2

kernel-livepatch-4_12_14-150100_197_111-default: before 8-150100.2.2

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20223359-1/

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.

2) Improper update of reference count

EUVDB-ID: #VU63496

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-29581

CWE-ID: CWE-911 - Improper Update of Reference Count

Exploit availability: No

Description

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

The vulnerability exists due to improper update of reference count in net/sched in Linux kernel. A local user can execute arbitrary code with root privileges.

Mitigation

Update the affected package the Linux Kernel (Live Patch 30 for SLE 15 SP1) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications: 15-SP1

SUSE Linux Enterprise Server: 15-SP1

SUSE Linux Enterprise Module for Live Patching: 15-SP1

SUSE Linux Enterprise High Performance Computing: 15-SP1

SUSE Linux Enterprise Live Patching: 12-SP5

kgraft-patch-4_12_14-122_121-default: before 6-2.2

kgraft-patch-4_12_14-122_113-default: before 10-2.2

kernel-livepatch-4_12_14-197_105-default: before 10-150100.2.2

kernel-livepatch-4_12_14-150100_197_111-default: before 8-150100.2.2

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20223359-1/

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.

3) Race condition

EUVDB-ID: #VU67478

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-2022-39188

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The vulnerability exists due to a race condition within include/asm-generic/tlb.h in the Linux kernel. A local user can exploit the race and escalate privileges on the system.

Note, this only occurs in situations with VM_PFNMAP VMAs.

Mitigation

Update the affected package the Linux Kernel (Live Patch 30 for SLE 15 SP1) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP Applications: 15-SP1

SUSE Linux Enterprise Server: 15-SP1

SUSE Linux Enterprise Module for Live Patching: 15-SP1

SUSE Linux Enterprise High Performance Computing: 15-SP1

SUSE Linux Enterprise Live Patching: 12-SP5

kgraft-patch-4_12_14-122_121-default: before 6-2.2

kgraft-patch-4_12_14-122_113-default: before 10-2.2

kernel-livepatch-4_12_14-197_105-default: before 10-150100.2.2

kernel-livepatch-4_12_14-150100_197_111-default: before 8-150100.2.2

External links

http://www.suse.com/support/update/announcement/2022/suse-su-20223359-1/

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.