Improper Authentication Affecting kernel-default-livepatch-devel package, versions <5.3.18-150300.59.98.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-SLES153-KERNELDEFAULTLIVEPATCHDEVEL-3085078
  • published27 Oct 2022
  • disclosed26 Oct 2022

Introduced: 26 Oct 2022

CVE-2022-2503  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade SLES:15.3 kernel-default-livepatch-devel to version 5.3.18-150300.59.98.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-default-livepatch-devel package and not the kernel-default-livepatch-devel package as distributed by SLES. See How to fix? for SLES:15.3 relevant fixed versions and status.

Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates. We recommend upgrading past commit 4caae58406f8ceb741603eee460d79bacca9b1b5

CVSS Scores

version 3.1