CVE-2024-43871: devres: Fix memory leakage caused by driver API devm_free_percpu()
First published: Wed Aug 21 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: devres: Fix memory leakage caused by driver API devm_free_percpu() It will cause memory leakage when use driver API devm_free_percpu() to free memory allocated by devm_alloc_percpu(), fixed by using devres_release() instead of devres_destroy() within devm_free_percpu().
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | >=4.10<4.19.320 | |
| Linux Kernel | >=4.20<5.4.282 | |
| Linux Kernel | >=5.5<5.10.224 | |
| Linux Kernel | >=5.11<5.15.165 | |
| Linux Kernel | >=5.16<6.1.103 | |
| Linux Kernel | >=6.2<6.6.44 | |
| Linux Kernel | >=6.7<6.10.3 | |
| 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 |
| debian/linux-6.1 | 6.1.119-1~deb11u1 |
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Reference Links
- https://git.kernel.org/stable/c/3047f99caec240a88ccd06197af2868da1af6a96
- https://git.kernel.org/stable/c/3dcd0673e47664bc6c719ad47dadac6d55d5950d
- https://git.kernel.org/stable/c/700e8abd65b10792b2f179ce4e858f2ca2880f85
- https://git.kernel.org/stable/c/95065edb8ebb27771d5f1e898eef6ab43dc6c87c
- https://git.kernel.org/stable/c/b044588a16a978cd891cb3d665dd7ae06850d5bf
- https://git.kernel.org/stable/c/b67552d7c61f52f1271031adfa7834545ae99701
- https://git.kernel.org/stable/c/bd50a974097bb82d52a458bd3ee39fb723129a0c
- https://git.kernel.org/stable/c/ef56dcdca8f2a53abc3a83d388b8336447533d85
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-43871
- https://nvd.nist.gov/vuln/detail/CVE-2024-43871
- https://launchpad.net/bugs/cve/CVE-2024-43871
- https://security-tracker.debian.org/tracker/CVE-2024-43871
- https://ubuntu.com/security/CVE-2024-43871
- https://git.kernel.org/linus/bd50a974097bb82d52a458bd3ee39fb723129a0c
Frequently Asked Questions
What is the severity of CVE-2024-43871?
CVE-2024-43871 has a severity rating that indicates a risk of memory leakage in the Linux kernel due to improper handling of memory deallocation.
How do I fix CVE-2024-43871?
To fix CVE-2024-43871, ensure that you are using a patched version of the Linux kernel, such as 5.10.226-1, 6.1.123-1, or any later version.
What systems are affected by CVE-2024-43871?
CVE-2024-43871 affects various versions of the Linux kernel including those in the ranges from 4.10 to 6.10.3.
Is there a risk of exploitation for CVE-2024-43871?
Yes, CVE-2024-43871 could potentially be exploited, leading to performance degradation due to memory leakage.
What components does CVE-2024-43871 affect in the Linux kernel?
CVE-2024-43871 affects the driver API specifically related to memory allocation functions, particularly devm_free_percpu() and devm_alloc_percpu().
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