PT-2025-8201 · Linux+3 · Linux Kernel+3

Ali Pouladi · Published 2023-11-07 · Updated 2025-09-29 · CVE-2022-49273

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 null pointer dereference issue was found in the Linux kernel, specifically in the pl031 Real-Time Clock (RTC) driver. The issue occurs when there is no interrupt line and the RTC alarm feature is disabled. The clearing of the RTC FEATURE ALARM bit was being done before the allocation of the ldata->rtc device, resulting in a null pointer dereference. The fix involves clearing the RTC FEATURE ALARM bit after the RTC device is allocated.

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

ALSA-2025_16880

CVE-2022-49273

RHSA-2023:6583

RHSA-2023_6583

SUSE-SU-2025:1027-1

SUSE-SU-2025:1176-1

SUSE-SU-2025:1183-1

SUSE-SU-2025:1241-1

SUSE-SU-2025_1027-1

SUSE-SU-2025_1241-1

Affected Products

Astra Linux

Linux Kernel

Red Hat

Suse

References · 1329

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49273.json · Exploit
• https://ubuntu.com/security/CVE-2022-49273 · Vendor Advisory
• https://git.kernel.org/stable/c/ea6af39f3da50c86367a71eb3cc674ade3ed244c · Patch
• https://osv.dev/vulnerability/SUSE-SU-2025:1027-1 · Vendor Advisory
• https://git.kernel.org/stable/c/d274ce4a3dfd0b9a292667535578359b865765cb · Patch
• https://security-tracker.debian.org/tracker/CVE-2022-49273 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-49273 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1241-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-49273 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2025:1176-1 · Vendor Advisory
• https://git.kernel.org/stable/c/cd2722e411e8ab7e5ae41102f6925fa13dffdac5 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-49273 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-49273 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:1183-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-49273 · Security Note