CVE-2024-56600: net: inet6: do not leave a dangling sk pointer in inet6_create()
First published: Fri Dec 27 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.4.287 | |
| Linux Kernel | >=5.5<5.10.231 | |
| Linux Kernel | >=5.11<5.15.174 | |
| Linux Kernel | >=5.16<6.1.120 | |
| Linux Kernel | >=6.2<6.6.66 | |
| Linux Kernel | >=6.7<6.12.5 | |
| debian/linux | <=5.10.223-1 | 5.10.234-1 6.1.129-1 6.1.133-1 6.12.21-1 6.12.22-1 |
| debian/linux-6.1 | 6.1.129-1~deb11u1 |
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Reference Links
- 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
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-56600
- https://nvd.nist.gov/vuln/detail/CVE-2024-56600
- https://launchpad.net/bugs/cve/CVE-2024-56600
- https://security-tracker.debian.org/tracker/CVE-2024-56600
- https://ubuntu.com/security/CVE-2024-56600
- https://git.kernel.org/linus/9df99c395d0f55fb444ef39f4d6f194ca437d884
Frequently Asked Questions
What is the severity of CVE-2024-56600?
CVE-2024-56600 is classified as a moderate severity vulnerability.
How do I fix CVE-2024-56600?
To fix CVE-2024-56600, update your Linux kernel to a version that includes the patch for this vulnerability.
What versions of the Linux kernel are affected by CVE-2024-56600?
CVE-2024-56600 affects Linux kernel versions up to 5.4.287 and several versions between 5.5 and 6.12.5.
What type of vulnerability is CVE-2024-56600?
CVE-2024-56600 is a memory management vulnerability related to the inet6_create() function in the Linux kernel.
What issues can CVE-2024-56600 cause?
CVE-2024-56600 can lead to potential remote code execution or denial of service due to improper socket handling.
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