PT-2024-11787 · Linux+3 · Linux Kernel+3

David Sterba + 1 · Published 2022-01-20 · Updated 2024-08-22 · CVE-2022-48734

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 deadlock vulnerability has been found in the Linux kernel, specifically in the btrfs file system. The issue occurs when the quota disable ioctl starts a transaction before waiting for the qgroup rescan worker to complete, resulting in a circular dependency among the quota disable ioctl, the qgroup rescan worker, and other tasks with transactions. This can lead to an infinite wait and a deadlock. The vulnerability was discovered using the fstests test case btrfs/115 and a zoned null blk device. An example report of the deadlock is provided, showing tasks blocked for more than 122 seconds.

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

Exploit

Improper Locking

Weakness Enumeration

CWE-667

Related Identifiers

BDU:2025-14253

CVE-2022-48734

OPENSUSE-SU-2024_2372-1

OPENSUSE-SU-2024_2394-1

SUSE-SU-2024:2372-1

SUSE-SU-2024:2394-1

SUSE-SU-2024:2902-1

SUSE-SU-2024:2929-1

SUSE-SU-2024:2939-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

References · 1210

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48734.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2022-48734 · Vendor Advisory
• https://git.kernel.org/stable/c/89d4cca583fc9594ee7d1a0bc986886d6fb587e6 · Patch
• https://ubuntu.com/security/CVE-2022-48734 · Vendor Advisory
• https://git.kernel.org/stable/c/31198e58c09e21d4f65c49d2361f76b87aca4c3f · Patch
• https://git.kernel.org/stable/c/26b3901d20bf9da2c6a00cb1fb48932166f80a45 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:2929-1 · Vendor Advisory
• https://git.kernel.org/stable/c/32747e01436aac8ef93fe85b5b523b4f3b52f040 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2024:2394-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-48734 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:2939-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-48734 · Security Note
• https://bdu.fstec.ru/vul/2025-14253 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-48734 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-48734 · Security Note