CVE-2022-49273
Linux Kernel RTC pl031 Null Pointer Dereference Vulnerability
Description
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.
INFO
Published Date :
Feb. 26, 2025, 7:01 a.m.
Last Modified :
April 14, 2025, 4:53 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
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information, practical solutions, and valuable tools related to
CVE-2022-49273.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2022-49273 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49273 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Apr. 14, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.17 up to (excluding) 5.17.2 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.16.19 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.12 up to (excluding) 5.15.33 Added Reference Type kernel.org: https://git.kernel.org/stable/c/1b915703964f7e636961df04c540261dc55c6c70 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cd2722e411e8ab7e5ae41102f6925fa13dffdac5 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d274ce4a3dfd0b9a292667535578359b865765cb Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/ea6af39f3da50c86367a71eb3cc674ade3ed244c Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added Description 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. Added Reference https://git.kernel.org/stable/c/1b915703964f7e636961df04c540261dc55c6c70 Added Reference https://git.kernel.org/stable/c/cd2722e411e8ab7e5ae41102f6925fa13dffdac5 Added Reference https://git.kernel.org/stable/c/d274ce4a3dfd0b9a292667535578359b865765cb Added Reference https://git.kernel.org/stable/c/ea6af39f3da50c86367a71eb3cc674ade3ed244c
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49273 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-49273
weaknesses.