What’s Vulnerable › Vulnerabilities

CVE-2024-56603: net: af_can: do not leave a dangling sk pointer in can_create()

• Severity: high (CVSS 7.8 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: 2024-12-27 · updated 2026-06-17
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: net: af_can: do not leave a dangling sk pointer in can_create() On error can_create() frees the allocated sk object, but sock_init_data() has already attached it to the provided sock object. This will leave a dangling sk pointer in the sock object and may cause use-after-free later.

Affected products

• Linux kernel: before 5.4.287; from 5.5 before 5.10.231; from 5.11 before 5.15.174; from 5.16 before 6.1.120; from 6.2 before 6.6.66; from 6.7 before 6.12.5 — fixed in 5.10.231, 5.15.174, 5.4.287, 6.1.120, 6.12.5, 6.6.66

How to fix

Upgrade to a fixed version: Linux kernel 5.10.231, 5.15.174, 5.4.287, 6.1.120. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1fe625f12d090d69f3f084990c7e4c1ff94bfe5f
• https://git.kernel.org/stable/c/5947c9ac08f0771ea8ed64186b0d52e9029cb6c0
• https://git.kernel.org/stable/c/811a7ca7320c062e15d0f5b171fe6ad8592d1434
• https://git.kernel.org/stable/c/884ae8bcee749be43a071d6ed2d89058dbd2425c
• https://git.kernel.org/stable/c/8df832e6b945e1ba61467d7f1c9305e314ae92fe
• https://git.kernel.org/stable/c/ce39b5576785bb3e66591145aad03d66bc3e778d
• https://git.kernel.org/stable/c/db207d19adbac96058685f6257720906ad41d215
• https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
• https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html

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