PT-2025-8268 · Linux+2 · Linux Kernel+2

Published 2022-11-15 · Updated 2025-09-29 · CVE-2022-49334

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 identified. The problem occurs when the xas split alloc() function fails to allocate necessary nodes for an xarray entry split, leading to confusion in memory management. Specifically, the function sets the xa state to -ENOMEM, which is misinterpreted by xas nomem(), resulting in incorrect memory allocation instead of freeing unnecessary memory.

Recommendations To resolve this issue, consider updating the Linux kernel to a version that includes the fix for the memory leak in the mm/huge memory module. 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

ALSA-2025_16880

CVE-2022-49334

RHSA-2022:8267

RHSA-2022_8267

Affected Products

Astra Linux

Linux Kernel

Red Hat

References · 15

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49334.json · Exploit
• https://osv.dev/vulnerability/CVE-2022-49334 · Vendor Advisory
• https://git.kernel.org/stable/c/69a37a8ba1b408a1c7616494aa7018e4b3844cbe · Patch
• https://cve.org/CVERecord?id=CVE-2022-49334 · Security Note
• https://git.kernel.org/stable/c/c0c84962e297927ba57fd6ddc2bb000c9d149655 · Patch
• https://ubuntu.com/security/CVE-2022-49334 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49334 · Security Note
• https://git.kernel.org/stable/c/95c8181b4947e000f3b9b8e5918d899fce77b93d · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49334 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49334 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49334 · Vendor Advisory
• https://git.kernel.org/linus/69a37a8ba1b408a1c7616494aa7018e4b3844cbe · Note
• https://twitter.com/CVEnew/status/1896037277257593208 · Twitter Post
• https://lore.kernel.org/linux-cve-announce/2025022639-CVE-2022-49334-7f6b@gregkh/T · Note
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note