SUSE update for the Linux Kernel (Live Patch 7 for SLE 15 SP3)

Published: 2022-02-01 | Updated: 2024-08-21

Risk	Low
Patch available	YES
Number of vulnerabilities	3
CVE-ID	CVE-2021-4028 CVE-2021-42739 CVE-2022-0185
CWE-ID	CWE-416 CWE-119 CWE-190
Exploitation vector	Local
Public exploit	Vulnerability #3 is being exploited in the wild.
Vulnerable software	SUSE Linux Enterprise Module for Live Patching Operating systems & Components / Operating system kernel-livepatch-SLE15-SP3_Update_7-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP3_Update_6-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_27-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_27-default Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_24-default-debuginfo Operating systems & Components / Operating system package or component kernel-livepatch-5_3_18-59_24-default Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU60797

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-4028

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 the RDMA listen() function in Linux kernel. A local user can run a specially crafted program to trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel (Live Patch 7 for SLE 15 SP3) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Live Patching: 15-SP3

kernel-livepatch-SLE15-SP3_Update_7-debugsource: before 4-150300.2.2

kernel-livepatch-SLE15-SP3_Update_6-debugsource: before 4-150300.2.2

kernel-livepatch-5_3_18-59_27-default-debuginfo: before 4-150300.2.2

kernel-livepatch-5_3_18-59_27-default: before 4-150300.2.2

kernel-livepatch-5_3_18-59_24-default-debuginfo: before 4-150300.2.2

kernel-livepatch-5_3_18-59_24-default: before 4-150300.2.2

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20220270-1/

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) Buffer overflow

EUVDB-ID: #VU59474

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-42739

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary within the firewire subsystem in the Linux kernel in drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c files. A local privileged user can run a specially crafted program tat calls avc_ca_pmt() function to trigger memory corruption and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel (Live Patch 7 for SLE 15 SP3) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Live Patching: 15-SP3

kernel-livepatch-SLE15-SP3_Update_7-debugsource: before 4-150300.2.2

kernel-livepatch-SLE15-SP3_Update_6-debugsource: before 4-150300.2.2

kernel-livepatch-5_3_18-59_27-default-debuginfo: before 4-150300.2.2

kernel-livepatch-5_3_18-59_27-default: before 4-150300.2.2

kernel-livepatch-5_3_18-59_24-default-debuginfo: before 4-150300.2.2

kernel-livepatch-5_3_18-59_24-default: before 4-150300.2.2

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20220270-1/

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) Integer overflow

EUVDB-ID: #VU59695

Risk: Low

CVSSv4.0: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2022-0185

CWE-ID: CWE-190 - Integer overflow

Exploit availability: Yes

Description

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

The vulnerability exists due to integer overflow in the legacy_parse_param() function in fs/fs_context.c in Linux kernel. A local user can tun a specially crafted program to trigger integer overflow and execute arbitrary code with root privileges.

Mitigation

Update the affected package the Linux Kernel (Live Patch 7 for SLE 15 SP3) to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Live Patching: 15-SP3

kernel-livepatch-SLE15-SP3_Update_7-debugsource: before 4-150300.2.2

kernel-livepatch-SLE15-SP3_Update_6-debugsource: before 4-150300.2.2

kernel-livepatch-5_3_18-59_27-default-debuginfo: before 4-150300.2.2

kernel-livepatch-5_3_18-59_27-default: before 4-150300.2.2

kernel-livepatch-5_3_18-59_24-default-debuginfo: before 4-150300.2.2

kernel-livepatch-5_3_18-59_24-default: before 4-150300.2.2

CPE2.3

External links

https://www.suse.com/support/update/announcement/2022/suse-su-20220270-1/

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?

Yes. This vulnerability is being exploited in the wild.