PT-2025-38047 · Linux+2 · Linux Kernel+2

Published 2023-08-29 · Updated 2025-09-17 · CVE-2023-53329

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel versions 6.5.0-rc6+ through 6.5.0-rc7-kcsan-00169-g81eaf55a60fc

Description A data race exists in the Linux kernel's workqueue functionality, specifically related to the incrementing of pwq->stats[]. Kernel Concurrency Sanitizer (KCSAN) identified this issue within the process one work function. The vulnerability occurs when multiple tasks concurrently access and modify the pwq->stats[PWQ STAT STARTED] variable, leading to inconsistent data. The issue was observed in the context of the btrfs filesystem's btrfs end bio work workqueue.

Recommendations Linux kernel versions prior to 6.5.0-rc6+ are affected. Linux kernel version 6.5.0-rc7-kcsan-00169-g81eaf55a60fc contains a fix that moves the increment of pwq->stats[PWQ STAT STARTED] before the unlocking of the pool's lock, resolving the data race without performance penalty.

Exploit

Fix

Race Condition

Weakness Enumeration

CWE-366

CWE-362

Related Identifiers

BDU:2026-06008

CVE-2023-53329

Affected Products

Astra Linux

Linux Kernel

Btrfs

References · 18

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53329.json · Exploit
• https://git.kernel.org/stable/c/fe48ba7daefe75bbbefa2426deddc05f2d530d2d · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-53329 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-53329 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-53329 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-53329 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2023-53329 · Vendor Advisory
• https://git.kernel.org/stable/c/ce55024f28589b0012fa2c6b5748ec5a180b7fbe · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-53329 · Security Note
• https://bdu.fstec.ru/vul/2026-06008 · Security Note
• https://cve.org/CVERecord?id=CVE-2023-53329 · Security Note
• https://osv.dev/vulnerability/BELL-CVE-2023-53329 · Vendor Advisory
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note
• https://t.me/CVEtracker/32656 · Telegram Post
• https://git.kernel.org/linus/fe48ba7daefe75bbbefa2426deddc05f2d530d2d · Note