What’s Vulnerable › Vulnerabilities
CVE-2024-56600: net: inet6: do not leave a dangling sk pointer in inet6_create()
- Severity: high (CVSS 7.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-12-27 · updated 2026-10-15
- Weakness: CWE-416
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.
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/276a473c956fb55a6f3affa9ff232e10fffa7b43
- https://git.kernel.org/stable/c/35360255ca30776dee34d9fa764cffa24d0a5f65
- https://git.kernel.org/stable/c/706b07b7b37f886423846cb38919132090bc40da
- https://git.kernel.org/stable/c/79e16a0d339532ea832d85798eb036fc4f9e0cea
- https://git.kernel.org/stable/c/9df99c395d0f55fb444ef39f4d6f194ca437d884
- https://git.kernel.org/stable/c/f2709d1271cfdf55c670ab5c5982139ab627ddc7
- https://git.kernel.org/stable/c/f44fceb71d72d29fb00e0ac84cdf9c081b03cd06
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- https://cert-portal.siemens.com/productcert/html/ssa-355557.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
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