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Acknowledged

LIN1022-6710 : Security Advisory - linux - CVE-2021-46946

Created: Feb 27, 2024    Updated: Jan 6, 2026
Resolved Date: Apr 1, 2024
Found In Version: 10.22.33.1
Severity: Standard
Applicable for: Wind River Linux LTS 22
Component/s: Kernel

Description

In the Linux kernel, the following vulnerability has been resolved:

ext4: fix check to prevent false positive report of incorrect used inodes

Commit <50122847007> ("ext4: fix check to prevent initializing reserved
inodes") check the block group zero and prevent initializing reserved
inodes. But in some special cases, the reserved inode may not all belong
to the group zero, it may exist into the second group if we format
filesystem below.

  mkfs.ext4 -b 4096 -g 8192 -N 1024 -I 4096 /dev/sda

So, it will end up triggering a false positive report of a corrupted
file system. This patch fix it by avoid check reserved inodes if no free
inode blocks will be zeroed.

CREATE(Triage):(User=admin) CVE-2021-46946 (https://nvd.nist.gov/vuln/detail/CVE-2021-46946)