SUSE SLES15 Security Update : kernel (Live Patch 22 for SLE 15 SP1) (SUSE-SU-2021:2560-1)

high Nessus Plugin ID 152159
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES15 host has a package installed that is affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2560-1 advisory.

- An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after- free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c. (CVE-2020-36385)

- A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c.
This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space (CVE-2021-22555)

- fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05. (CVE-2021-33909)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel-livepatch-4_12_14-197_83-default package.

See Also

https://bugzilla.suse.com/1187052

https://bugzilla.suse.com/1188117

https://bugzilla.suse.com/1188257

http://www.nessus.org/u?5531852f

https://www.suse.com/security/cve/CVE-2020-36385

https://www.suse.com/security/cve/CVE-2021-22555

https://www.suse.com/security/cve/CVE-2021-33909

Plugin Details

Severity: High

ID: 152159

File Name: suse_SU-2021-2560-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 7/30/2021

Updated: 8/9/2021

Dependencies: ssh_get_info.nasl, linux_alt_patch_detect.nasl

Risk Information

CVSS Score Source: CVE-2021-33909

VPR

Risk Factor: Critical

Score: 9.6

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kernel-livepatch-4_12_14-197_83-default, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 7/29/2021

Vulnerability Publication Date: 4/20/2021

Reference Information

CVE: CVE-2020-36385, CVE-2021-22555, CVE-2021-33909

SuSE: SUSE-SU-2021:2560-1

IAVA: 2021-A-0350