PT-2025-8342 · Linux+2 · Linux Kernel+2

Eric Biggers · Published 2022-11-15 · Updated 2025-09-29 · CVE-2022-49408

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A memory leak issue has been identified in the Linux kernel, specifically in the ext4 file system. The leak occurs when processing on-disk mount options fails after memory allocation in the ext4 fs context. This issue is resolved by calling ext4 fc free() instead of kfree() directly. A reproducer is provided to demonstrate the issue, involving the creation of an ext4 file system, setting mount options, and scanning for memory leaks.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

ALSA-2025_16880

CVE-2022-49408

RHSA-2022:8267

RHSA-2022_8267

Affected Products

Astra Linux

Linux Kernel

Red Hat

References · 15

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49408.json · Exploit
• https://git.kernel.org/stable/c/c069db76ed7b681c69159f44be96d2137e9ca989 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49408 · Security Note
• https://osv.dev/vulnerability/CVE-2022-49408 · Vendor Advisory
• https://git.kernel.org/stable/c/f92ded66e9d0aa20b883a2a5183973abc8f41815 · Patch
• https://git.kernel.org/stable/c/9ea3e6168948189cec31d0678d2b55b395f88491 · Patch
• https://cve.org/CVERecord?id=CVE-2022-49408 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49408 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49408 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49408 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49408 · Vendor Advisory
• https://git.kernel.org/linus/c069db76ed7b681c69159f44be96d2137e9ca989 · Note
• https://twitter.com/CVEnew/status/1895982044464980130 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://lore.kernel.org/linux-cve-announce/2025022652-CVE-2022-49408-2973@gregkh/T · Note