PT-2025-7955 · Linux+3 · Linux Kernel+3

Published 2022-01-23 · Updated 2025-09-29 · CVE-2021-47644

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 in the Linux kernel has been resolved. The problem was related to the zoran media driver, specifically in the zr36057 init() function. The fix involved moving code out of this function and creating new functions to handle the zr->video dev, which improved code readability and fixed the memory leak.

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

BDU:2026-04478

CVE-2021-47644

SUSE-SU-2025:0834-1

SUSE-SU-2025:1027-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1241-1

SUSE-SU-2025_0834-1

SUSE-SU-2025_1027-1

SUSE-SU-2025_1241-1

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

References · 1489

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/cve_2022_0995_watch_queue.rb · Exploit
• 🔥 https://github.com/qazbnm456/awesome-cve-poc/blob/master/CVE-2017-5753.md · Exploit
• 🔥 https://github.com/Bonfee/CVE-2022-0995 · Exploit
• 🔥 https://github.com/TurtleARM/CVE-2023-0179-PoC · Exploit
• 🔥 https://github.com/H4K6/CVE-2023-0179-PoC · Exploit
• 🔥 https://github.com/EdwardOwusuAdjei/Spectre-PoC · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2025:1027-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-04478 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47644 · Vendor Advisory
• https://git.kernel.org/stable/c/bd01629315ffd5b63da91d0bd529a77d30e55028 · Patch
• https://ubuntu.com/security/CVE-2021-47644 · Vendor Advisory
• https://git.kernel.org/stable/c/c1ba65100a359fe28cfe37e09e10c99f247cbf1e · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-47644 · Vendor Advisory
• https://git.kernel.org/stable/c/1e501ec38796f43e995731d1bcd4173cb1ccfce0 · Patch