CVE-2022-49832
Linux Kernel Pinctrl Devicetree Null Pointer Dereference Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map Here is the BUG report by KASAN about null pointer dereference: BUG: KASAN: null-ptr-deref in strcmp+0x2e/0x50 Read of size 1 at addr 0000000000000000 by task python3/2640 Call Trace: strcmp __of_find_property of_find_property pinctrl_dt_to_map kasprintf() would return NULL pointer when kmalloc() fail to allocate. So directly return ENOMEM, if kasprintf() return NULL pointer.
INFO
Published Date :
May 1, 2025, 3:16 p.m.
Last Modified :
May 2, 2025, 1:53 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-49832.
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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CVE-2022-49832 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49832 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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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 01, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map Here is the BUG report by KASAN about null pointer dereference: BUG: KASAN: null-ptr-deref in strcmp+0x2e/0x50 Read of size 1 at addr 0000000000000000 by task python3/2640 Call Trace: strcmp __of_find_property of_find_property pinctrl_dt_to_map kasprintf() would return NULL pointer when kmalloc() fail to allocate. So directly return ENOMEM, if kasprintf() return NULL pointer. Added Reference https://git.kernel.org/stable/c/040f726fecd88121f3b95e70369785ad452dddf9 Added Reference https://git.kernel.org/stable/c/5834a3a98cd266ad35a229923c0adbd0addc8d68 Added Reference https://git.kernel.org/stable/c/777430aa4ddccaa5accec6db90ffc1d47f00d471 Added Reference https://git.kernel.org/stable/c/91d5c5060ee24fe8da88cd585bb43b843d2f0dce Added Reference https://git.kernel.org/stable/c/97e5b508e96176f1a73888ed89df396d7041bfcb Added Reference https://git.kernel.org/stable/c/a988dcd3dd9e691c5ccc3324b209688f3b5453e9 Added Reference https://git.kernel.org/stable/c/aaf552c5d53abe4659176e099575fe870d2e4768 Added Reference https://git.kernel.org/stable/c/b4d9f55cd38435358bc16d580612bc0d798d7b4c
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49832 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-2022-49832
weaknesses.