PT-2025-18611 · Linux+1 · Linux Kernel+1

Published 2025-05-01 · Updated 2025-05-02 · CVE-2022-49894

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 vulnerability in the Linux kernel has been resolved, related to the validation of region HPA ordering. Some regions may not have any address space allocated, and skipping them during validation can prevent a crash. The issue can lead to a kernel NULL pointer dereference. Technical details include the store targetN function and the alloc region ref function at drivers/cxl/core/region.c:676. The vulnerability can cause a crash with a BUG message indicating a kernel NULL pointer dereference.

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

Exploit

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2026-06057

CVE-2022-49894

Affected Products

Astra Linux

Linux Kernel

References · 16

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49894.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-49894 · Security Note
• https://git.kernel.org/stable/c/a90accb358ae33ea982a35595573f7a045993f8b · Patch
• https://ubuntu.com/security/CVE-2022-49894 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49894 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49894 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-49894 · Vendor Advisory
• https://git.kernel.org/stable/c/12316b9f7c18138ae656050cfd716728e27b7e2f · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49894 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-06057 · Security Note
• https://osv.dev/vulnerability/CVE-2022-49894 · Vendor Advisory
• https://git.kernel.org/linus/a90accb358ae33ea982a35595573f7a045993f8b · Note
• https://lore.kernel.org/linux-cve-announce/2025050159-CVE-2022-49894-bc10@gregkh · Note
• https://twitter.com/CVEnew/status/1917950825579839627 · Twitter Post
• https://access.redhat.com/security/cve/cve-2022-49894 · Note