PT-2025-8355 · Linux+2 · Linux Kernel+2

Published 2022-05-12 · Updated 2025-04-16 · CVE-2022-49421

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 refcount leak issue has been identified in the Linux kernel, specifically in the clcdfb driver. The of parse phandle() function returns a node pointer with an incremented refcount, but the corresponding of node put() call is missing, leading to a refcount leak. This issue is related to the clcdfb of vram setup function.

Recommendations To resolve this issue, apply the fix that adds the missing of node put() call to avoid the refcount leak. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-911

Related Identifiers

BDU:2026-03488

CVE-2022-49421

OPENSUSE-SU-2025_1263-1

SUSE-SU-2025:1027-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1194-1

SUSE-SU-2025:1241-1

SUSE-SU-2025:1263-1

SUSE-SU-2025:1293-1

SUSE-SU-2025_1027-1

SUSE-SU-2025_1241-1

SUSE-SU-2025_1263-1

SUSE-SU-2025_1293-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 1506

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49421.json · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2025:1263-1 · Vendor Advisory
• https://git.kernel.org/stable/c/2e2e2c71b2642289438392edbf5d08cdbc0b138b · Patch
• https://osv.dev/vulnerability/CVE-2022-49421 · Vendor Advisory
• https://git.kernel.org/stable/c/51eb1bb6baeb478538dd4ec6459fd68c44a855b1 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1027-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1293-1 · Vendor Advisory
• https://git.kernel.org/stable/c/f2dfb4ab887d67be7d0892ba041d3c8d738d3356 · Patch
• https://ubuntu.com/security/CVE-2022-49421 · Vendor Advisory
• https://git.kernel.org/stable/c/38d245cebf545338a6bc1c7762023de3fbecd7b7 · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-49421 · Vendor Advisory
• https://git.kernel.org/stable/c/bbb2a24e863b6a10129546a0a4ceea2f07deec39 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://git.kernel.org/stable/c/8db59df7f5826e104db82cfddbf22a33a151193e · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2022-49421 · Security Note