CVE-2022-2503 (Medium) detected in linux-yoctov5.4.51

[mend-bolt-for-github[bot]]

CVE-2022-2503 - Medium Severity Vulnerability

Vulnerable Library - linux-yoctov5.4.51

Yocto Linux Embedded kernel

Library home page: https://git.yoctoproject.org/git/linux-yocto

Found in base branch: master

Vulnerable Source Files (1)

/drivers/md/dm-verity-target.c

Vulnerability Details

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

Publish Date: 2022-08-12

URL: CVE-2022-2503

CVSS 3 Score Details (6.7)

Base Score Metrics: - Exploitability Metrics: - Attack Vector: Local - Attack Complexity: Low - Privileges Required: High - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://www.linuxkernelcves.com/cves/CVE-2022-2503

Release Date: 2022-08-12

Fix Resolution: v4.9.317,v4.14.282,v4.19.246,v5.4.197,v5.10.120,v5.15.45,v5.17.13,v5.18.2

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