CVE-2022-49448: soc: bcm: Check for NULL return of devm_kzalloc()
First published: Wed Feb 26 2025(Updated: )
In the Linux kernel, the following vulnerability has been resolved: soc: bcm: Check for NULL return of devm_kzalloc() As the potential failure of allocation, devm_kzalloc() may return NULL. Then the 'pd->pmb' and the follow lines of code may bring null pointer dereference. Therefore, it is better to check the return value of devm_kzalloc() to avoid this confusion.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | ||
| Linux Kernel | >=5.12<5.15.46 | |
| Linux Kernel | >=5.16<5.17.14 | |
| Linux Kernel | >=5.18<5.18.3 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2022-49448?
CVE-2022-49448 is classified as a medium severity vulnerability due to potential null pointer dereference issues.
How do I fix CVE-2022-49448?
To fix CVE-2022-49448, update the Linux kernel to a version that incorporates the patch addressing the null return of devm_kzalloc().
What systems are affected by CVE-2022-49448?
CVE-2022-49448 affects the Linux kernel versions between 5.12 and 5.15.46, as well as several 5.16.x and 5.18.x versions.
What type of vulnerability is CVE-2022-49448?
CVE-2022-49448 is a memory allocation vulnerability that can lead to a null pointer dereference.
Is CVE-2022-49448 remotely exploitable?
CVE-2022-49448 is not considered remotely exploitable; exploitation requires local access to the affected system.
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