vulnerability

Debian: CVE-2022-49044: linux -- security update

Severity
9
CVSS
(AV:N/AC:L/Au:S/C:C/I:C/A:C)
Published
Feb 27, 2025
Added
Feb 27, 2025
Modified
Feb 28, 2025

Description

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.

Solution

debian-upgrade-linux
Title
NEW

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