PT-2024-11349 · Linux+1 · Linux Kernel+1

Zhihao Cheng · Published 2021-05-31 · Updated 2025-05-12 · CVE-2021-47351

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 The issue arises from concurrent xattr {set|get} and listxattr operations in UBIFS, potentially leading to problems such as assertion failure, memory corruption, and stale xattr values. This is resolved by introducing a new rw-lock in @ubifs inode to serialize write operations on xattr, allowing concurrent read operations to remain effective.

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

Memory Corruption

Assertion Failure

Race Condition

Weakness Enumeration

CWE-787

CWE-617

CWE-362

Related Identifiers

BDU:2025-14329

CVE-2021-47351

Affected Products

Astra Linux

Linux Kernel

References · 21

• https://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82 · Patch
• https://bdu.fstec.ru/vul/2025-14329 · Security Note
• https://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386 · Patch
• https://osv.dev/vulnerability/CVE-2021-47351 · Vendor Advisory
• https://git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6 · Patch
• https://security-tracker.debian.org/tracker/CVE-2021-47351 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47351 · Security Note
• https://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47351 · Vendor Advisory
• https://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5 · Patch
• https://ubuntu.com/security/CVE-2021-47351 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47351 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-47351 · Security Note
• https://t.me/cvenotify/121812 · Telegram Post
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.51 · Note