PT-2025-8282 · Linux+3 · Linux Kernel+3

Syzbot · Published 2022-11-15 · Updated 2025-09-29 · CVE-2022-49348

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 vulnerability in the Linux kernel has been identified, related to the ext4 file system. The issue arises from the misuse of the EXT4 FC REPLAY bit in the superblock field s state, which can be set by a maliciously corrupted superblock. This can bypass sanity checks and trigger a BUG() in ext4 es cache extent(). The problem is due to the historical naming of s mount state and the incorrect use of EXT4 FC REPLAY instead of the ext4 {set,clear,test} mount flag() inline functions.

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

Exploit

Related Identifiers

ALSA-2025_16880

CVE-2022-49348

RHSA-2022:8267

RHSA-2022_8267

SUSE-SU-2025:1027-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1241-1

SUSE-SU-2025_1027-1

SUSE-SU-2025_1241-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Suse

References · 1330

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49348.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49348 · Vendor Advisory
• https://git.kernel.org/stable/c/cc5b09cb6dacd4b32640537929ab4ee8fb2b9e04 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49348 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2022-49348 · Vendor Advisory
• https://git.kernel.org/stable/c/55b4dbb29054a05d839562f6d635ce05669b016d · Patch
• https://git.kernel.org/stable/c/af2f1932743fb52ebcb008ad7ac500d9df0aa796 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49348 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1027-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49348 · Security Note
• https://git.kernel.org/stable/c/b99fd73418350dea360da8311e87a6a7b0e15a4c · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49348 · Vendor Advisory