DEBIAN-CVE-2022-2503

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2022-2503
Published: 12 Aug 2022, 11:15
Last modified:28 Apr 2026, 20:24

Vulnerability Summary

Overall Risk (default)
medium
27/100
CVSS Score
6.7 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

12 Aug 2022, 11:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:24
Last Modified
Vulnerability information updated

Description

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 Metrics

  • v3.1•MEDIUM•Score: 6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Systems

  • debian•linux

    < 5.10.120-1 | < 5.18.2-1 | < 5.18.2-1 | < 5.18.2-1

References (1)