What’s Vulnerable › Vulnerabilities

CVE-2024-43871: devres: Fix memory leakage caused by driver API devm_free_percpu()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-21 · updated 2026-10-15
• Weakness: CWE-401

Description

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().

Affected products

• Linux kernel: from 4.10 before 4.19.320; from 4.20 before 5.4.282; from 5.5 before 5.10.224; from 5.11 before 5.15.165; from 5.16 before 6.1.103; from 6.2 before 6.6.44 — fixed in 4.19.320, 5.10.224, 5.15.165, 5.4.282, 6.1.103, 6.10.3

How to fix

Upgrade to a fixed version: Linux kernel 4.19.320, 5.10.224, 5.15.165, 5.4.282. Check the vendor advisory for mitigations.

References

• 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://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
• https://cert-portal.siemens.com/productcert/html/ssa-265688.html
• https://cert-portal.siemens.com/productcert/html/ssa-355557.html

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