CVE-2022-49044: Linux Kernel

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: dm integrity: fix memory corruption when tag_size is less than digest size It is possible to set up dm-integrity in such a way that the "tag_size" parameter is less than the actual digest size. In this situation, a part of the digest beyond tag_size is ignored. In this case, dm-integrity would write beyond the end of the ic->recalc_tags array and corrupt memory. The corruption happened in integrity_recalc->integrity_sector_checksum->crypto_shash_final. Fix this corruption by increasing the tags array so that it has enough padding at the end to accomodate the loop in integrity_recalc() being able to write a full digest size for the last member of the tags array.

Affected products

• Linux Linux Kernel: from 4.12, before 4.19.240 (fixed in 4.19.240); from 4.20, before 5.4.190 (fixed in 5.4.190); from 5.5, before 5.10.112 (fixed in 5.10.112); from 5.11, before 5.15.35 (fixed in 5.15.35); from 5.16, before 5.17.4 (fixed in 5.17.4); version 5.18 only

Published 2025-02-26. Last modified 2026-08-13.