What’s Vulnerable › Vulnerabilities

CVE-2024-38612: ipv6: sr: fix invalid unregister error path

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-06-19 · updated 2026-10-15
• Weakness: CWE-416

Description

In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: fix invalid unregister error path The error path of seg6_init() is wrong in case CONFIG_IPV6_SEG6_LWTUNNEL is not defined. In that case if seg6_hmac_init() fails, the genl_unregister_family() isn't called. This issue exist since commit 46738b1317e1 ("ipv6: sr: add option to control lwtunnel support"), and commit 5559cea2d5aa ("ipv6: sr: fix possible use-after-free and null-ptr-deref") replaced unregister_pernet_subsys() with genl_unregister_family() in this error path.

Affected products

• Linux kernel: from 4.10 before 4.19.316; from 4.20 before 5.4.278; from 5.5 before 5.10.219; from 5.11 before 5.15.161; from 5.16 before 6.1.93; from 6.2 before 6.6.33 — fixed in 4.19.316, 5.10.219, 5.15.161, 5.4.278, 6.1.93, 6.6.33

How to fix

Upgrade to a fixed version: Linux kernel 4.19.316, 5.10.219, 5.15.161, 5.4.278. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/00e6335329f23ac6cf3105931691674e28bc598c
• https://git.kernel.org/stable/c/10610575a3ac2a702bf5c57aa931beaf847949c7
• https://git.kernel.org/stable/c/160e9d2752181fcf18c662e74022d77d3164cd45
• https://git.kernel.org/stable/c/1a63730fb315bb1bab97edd69ff58ad45e04bb01
• https://git.kernel.org/stable/c/3398a40dccb88d3a7eef378247a023a78472db66
• https://git.kernel.org/stable/c/646cd236c55e2cb5f146fc41bbe4034c4af5b2a4
• https://git.kernel.org/stable/c/85a70ff1e572160f1eeb096ed48d09a1c9d4d89a
• https://git.kernel.org/stable/c/c04d6a914e890ccea4a9d11233009a2ee7978bf4
• https://git.kernel.org/stable/c/e77a3ec7ada84543e75722a1283785a6544de925
• https://git.kernel.org/stable/c/00e6335329f23ac6cf3105931691674e28bc598c
• https://git.kernel.org/stable/c/10610575a3ac2a702bf5c57aa931beaf847949c7
• https://git.kernel.org/stable/c/160e9d2752181fcf18c662e74022d77d3164cd45

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