PT-2025-25874 · Linux+2 · Linux Kernel+2

Published 2022-08-30 · Updated 2025-08-18 · CVE-2022-49948

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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

Description The issue arises when changing the console font with ioctl(KDFONTOP), where the new font size can be larger than the previous one. This can lead to out-of-bounds accesses to graphics memory if a previous selection is removed in vc do resize(). The problem occurs because the previous selection may now be outside of the new screen size.

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

Related Identifiers

BDU:2026-02254

CVE-2022-49948

OESA-2025-1820

SUSE-SU-2025:02264-1

SUSE-SU-2025:02308-1

SUSE-SU-2025:02320-1

SUSE-SU-2025:02321-1

SUSE-SU-2025:02322-1

SUSE-SU-2025:02537-1

SUSE-SU-2025:02846-1

SUSE-SU-2025:2264-1

SUSE-SU-2025_02264-1

SUSE-SU-2025_02308-1

SUSE-SU-2025_02537-1

SUSE-SU-2025_02846-1

Affected Products

Astra Linux

Linux Kernel

Suse

References · 799

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49948.json · Exploit
• https://security-tracker.debian.org/tracker/CVE-2022-49948 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49918 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-37911 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-38023 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-49989 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-50220 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:02537-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49969 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-49986 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49948 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-50229 · Security Note
• https://bdu.fstec.ru/vul/2026-02254 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2022-50066 · Security Note
• https://osv.dev/vulnerability/CVE-2022-49948 · Vendor Advisory