PT-2025-41016 · Linux+2 · Linux Kernel+2

Published 2022-10-31 · Updated 2025-12-04 · CVE-2022-50511

Positive Technologies (AI Summary)

CVSS v2.0

6.0

Medium

Base vector

AV:L/AC:H/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains an issue within the lib/fonts module related to undefined behavior in a bit shift operation within the get default font() function. Specifically, shifting a signed 32-bit value by 31 bits can lead to undefined behavior. The issue was addressed by changing the significant bit to unsigned. This condition was identified through a UBSAN (Undefined Behavior Sanitizer) warning during execution.

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

Exploit

Out of bounds Read

Weakness Enumeration

CWE-125

CWE-1335

Related Identifiers

ALSA-2025_12746

ALSA-2025_12752

ALSA-2025_12753

ALSA-2025_16880

BDU:2025-12811

CVE-2022-50511

RHSA-2025:6966

RHSA-2025_6966

SUSE-SU-2025:4111-1

SUSE-SU-2025:4139-1

SUSE-SU-2025:4149-1

SUSE-SU-2025:4320-1

Affected Products

Linux Kernel

Red Hat

Suse

References · 450

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50511.json · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-50511 · Security Note
• https://ubuntu.com/security/CVE-2022-50511 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4111-1 · Vendor Advisory
• https://git.kernel.org/stable/c/c9a9aa02f0fa3318e0ae5774f404419a1b4759ca · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-50511 · Vendor Advisory
• https://git.kernel.org/stable/c/e83b47580a0738361772d6f24286adfdaba57e36 · Patch
• https://git.kernel.org/stable/c/9c14a85e18a58c102ec223144b7edb5b345c1bea · Patch
• https://git.kernel.org/stable/c/890d91b31f4874361e0df047f57d268a7021cb12 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-50511 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4320-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:4149-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-12811 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-50511 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:4139-1 · Vendor Advisory