PT-2025-8138 · Linux+1 · Linux Kernel+1

Yaliang Wang · Published 2025-02-26 · Updated 2025-03-03 · CVE-2022-49210

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 has been identified in the Linux kernel, specifically related to the pgd free() function. This issue arises when the system utilizes more than one page for the pgd table, and the generic implementation of pgd free() only frees one page, resulting in a memory leak. This scenario can occur, for example, when PAGE SIZE 4KB is enabled and MIPS VA BITS 48 is not enabled in a 64-bit system. The memory leak can be detected by running a shell command that continuously checks for free memory.

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

CVE-2022-49210

Affected Products

Astra Linux

Linux Kernel

References · 16

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49210.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2022-49210 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-49210 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49210 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-49210 · Security Note
• https://git.kernel.org/stable/c/2bc5bab9a763d520937e4f3fe8df51c6a1eceb97 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49210 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49210 · Vendor Advisory
• https://git.kernel.org/stable/c/d29cda15cab086d82d692de016f7249545d4b6b4 · Patch
• https://git.kernel.org/stable/c/fa3d44424579972cc7c4fac3d9cf227798ebdfa0 · Patch
• https://git.kernel.org/stable/c/1bf0d78c8cc3cf615a6e7bf33ada70b73592f0a1 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49210 · Vendor Advisory
• https://git.kernel.org/stable/c/5a8501d34b261906e4c76ec9da679f2cb4d309ed · Patch
• https://git.kernel.org/linus/2bc5bab9a763d520937e4f3fe8df51c6a1eceb97 · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note