vulnerability

Red Hat: CVE-2024-57940: kernel: exfat: fix the infinite loop in exfat_readdir() (Multiple Advisories)

Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
Jan 21, 2025
Added
May 15, 2025
Modified
May 15, 2025

Description

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

exfat: fix the infinite loop in exfat_readdir()

If the file system is corrupted so that a cluster is linked to
itself in the cluster chain, and there is an unused directory
entry in the cluster, 'dentry' will not be incremented, causing
condition 'dentry loop.

This infinite loop causes s_lock not to be released, and other
tasks will hang, such as exfat_sync_fs().

This commit stops traversing the cluster chain when there is unused
directory entry in the cluster to avoid this infinite loop.

Solution(s)

redhat-upgrade-kernelredhat-upgrade-kernel-rt
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