CVE-2022-49273

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49273
In the Linux kernel, the following vulnerability has been resolved: rtc: pl031: fix rtc features null pointer dereference When there is no interrupt line, rtc alarm feature is disabled. The clearing of the alarm feature bit was being done prior to allocations of ldata->rtc device, resulting in a null pointer dereference. Clear RTC_FEATURE_ALARM after the rtc device is allocated.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/1b915703964f7e636961df04c540261dc55c6c70 Patch
https://git.kernel.org/stable/c/cd2722e411e8ab7e5ae41102f6925fa13dffdac5 Patch
https://git.kernel.org/stable/c/d274ce4a3dfd0b9a292667535578359b865765cb Patch
https://git.kernel.org/stable/c/ea6af39f3da50c86367a71eb3cc674ade3ed244c Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

14 Apr 2025, 16:53

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/1b915703964f7e636961df04c540261dc55c6c70 - () https://git.kernel.org/stable/c/1b915703964f7e636961df04c540261dc55c6c70 - Patch
References () https://git.kernel.org/stable/c/cd2722e411e8ab7e5ae41102f6925fa13dffdac5 - () https://git.kernel.org/stable/c/cd2722e411e8ab7e5ae41102f6925fa13dffdac5 - Patch
References () https://git.kernel.org/stable/c/d274ce4a3dfd0b9a292667535578359b865765cb - () https://git.kernel.org/stable/c/d274ce4a3dfd0b9a292667535578359b865765cb - Patch
References () https://git.kernel.org/stable/c/ea6af39f3da50c86367a71eb3cc674ade3ed244c - () https://git.kernel.org/stable/c/ea6af39f3da50c86367a71eb3cc674ade3ed244c - Patch
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rtc: pl031: se corrige la desreferencia de puntero nulo de las funciones rtc Cuando no hay una línea de interrupción, la función de alarma rtc se desactiva. La eliminación del bit de la función de alarma se realizaba antes de las asignaciones del dispositivo ldata->rtc, lo que generaba una desreferencia de puntero nulo. Borre RTC_FEATURE_ALARM después de que se asigne el dispositivo rtc.
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CWE CWE-476
First Time Linux linux Kernel
Linux

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-04-14 16:53

NVD link : CVE-2022-49273

Mitre link : CVE-2022-49273

CVE.ORG link : CVE-2022-49273

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference