PT-2025-18595 · Linux+2 · Linux Kernel+2

Published 2023-11-07 · Updated 2025-05-02 · CVE-2022-49878

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 resolved in the Linux kernel. The problem occurred when the krealloc() function returned an error (NULL), and the callers of realloc array() set their allocation pointers to NULL. However, krealloc() does not modify the original allocation in case of an error, resulting in a memory resource leak. The issue was fixed by freeing the old allocation on the error handling path.

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-2022-49878

RHSA-2023:6583

RHSA-2023_6583

Affected Products

Astra Linux

Linux Kernel

Red Hat

References · 15

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49878.json · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49878 · Vendor Advisory
• https://git.kernel.org/stable/c/3e210891c4a4c2d858cd6f9f61d5809af251d4df · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49878 · Security Note
• https://osv.dev/vulnerability/CVE-2022-49878 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49878 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49878 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49878 · Vendor Advisory
• https://git.kernel.org/stable/c/06615967d4889b08b19ff3dda96e8b131282f73d · Patch
• https://git.kernel.org/stable/c/42378a9ca55347102bbf86708776061d8fe3ece2 · Patch
• https://ubuntu.com/security/CVE-2022-49878 · Vendor Advisory
• https://lore.kernel.org/linux-cve-announce/2025050153-CVE-2022-49878-1e05@gregkh/T · Note
• https://git.kernel.org/linus/42378a9ca55347102bbf86708776061d8fe3ece2 · Note
• https://twitter.com/CVEnew/status/1917950842503884817 · Twitter Post
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Note