CVE-2024-27037: clk: zynq: Prevent null pointer dereference caused by kmalloc failure
First published: Wed May 01 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: clk: zynq: Prevent null pointer dereference caused by kmalloc failure The kmalloc() in zynq_clk_setup() will return null if the physical memory has run out. As a result, if we use snprintf() to write data to the null address, the null pointer dereference bug will happen. This patch uses a stack variable to replace the kmalloc().
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/linux | <=5.10.223-1<=5.10.226-1 | 6.1.123-1 6.1.119-1 6.12.11-1 6.12.12-1 |
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Reference Links
- https://git.kernel.org/stable/c/01511ac7be8e45f80e637f6bf61af2d3d2dee9db
- https://git.kernel.org/stable/c/0801c893fd48cdba66a3c8f44c3fe43cc67d3b85
- https://git.kernel.org/stable/c/58a946ab43501f2eba058d24d96af0ad1122475b
- https://git.kernel.org/stable/c/7938e9ce39d6779d2f85d822cc930f73420e54a6
- https://git.kernel.org/stable/c/8c4889a9ea861d7be37463c10846eb75e1b49c9d
- https://git.kernel.org/stable/c/ca976c6a592f789700200069ef9052493c0b73d8
- https://launchpad.net/bugs/cve/CVE-2024-27037
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-27037
- https://nvd.nist.gov/vuln/detail/CVE-2024-27037
- https://security-tracker.debian.org/tracker/CVE-2024-27037
- https://ubuntu.com/security/CVE-2024-27037
- https://git.kernel.org/linus/7938e9ce39d6779d2f85d822cc930f73420e54a6
Frequently Asked Questions
What is the severity of CVE-2024-27037?
CVE-2024-27037 is considered a moderate severity vulnerability due to the risk of null pointer dereference that could lead to denial of service.
How do I fix CVE-2024-27037?
To fix CVE-2024-27037, update your Linux kernel to one of the patched versions, namely 6.1.123-1, 6.1.119-1, 6.12.10-1, or 6.12.11-1.
Which systems are affected by CVE-2024-27037?
CVE-2024-27037 affects certain versions of the Linux kernel prior to the specified patched releases.
What causes CVE-2024-27037?
CVE-2024-27037 is caused by the kmalloc() function returning null due to insufficient physical memory, leading to a potential null pointer dereference.
Is CVE-2024-27037 actively exploited?
As of now, there is no public indication that CVE-2024-27037 is being actively exploited in the wild.
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