Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: complete validation of user input In my recent commit, I missed that do_replace() handlers use copy_from_sockptr() (which I fixed), followed by unsafe copy_from_sockptr_offset() calls. In all functions, we can perform the @optlen validation before even calling xt_alloc_table_info() with the following check: if ((u64)optlen < (u64)tmp.size + sizeof(tmp)) return -EINVAL;
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15.154, < 5.15.156 |
| Debian | Debian Linux | 10.0 |
References
- https://git.kernel.org/stable/c/562b7245131f6e9f1d280c8b5a8750f03edfc05cPatch
- https://git.kernel.org/stable/c/65acf6e0501ac8880a4f73980d01b5d27648b956Patch
- https://git.kernel.org/stable/c/89242d9584c342cb83311b598d9e6b82572eadf8Patch
- https://git.kernel.org/stable/c/97dab36e57c64106e1c8ebd66cbf0d2d1e52d6b7Patch
- https://git.kernel.org/stable/c/c760089aa98289b4b88a7ff5a62dd92845adf223Patch
- https://git.kernel.org/stable/c/cf4bc359b76144a3dd55d7c09464ef4c5f2b2b05Patch
- https://git.kernel.org/stable/c/562b7245131f6e9f1d280c8b5a8750f03edfc05cPatch
- https://git.kernel.org/stable/c/65acf6e0501ac8880a4f73980d01b5d27648b956Patch
- https://git.kernel.org/stable/c/89242d9584c342cb83311b598d9e6b82572eadf8Patch
- https://git.kernel.org/stable/c/97dab36e57c64106e1c8ebd66cbf0d2d1e52d6b7Patch
- https://git.kernel.org/stable/c/c760089aa98289b4b88a7ff5a62dd92845adf223Patch
- https://git.kernel.org/stable/c/cf4bc359b76144a3dd55d7c09464ef4c5f2b2b05Patch
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing ListThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
FAQ
What is CVE-2024-35962?
CVE-2024-35962 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: netfilter: complete validation of user input In my recent commit, I missed that do_replace() handlers use copy_from_sockptr() (whi...
How severe is CVE-2024-35962?
CVE-2024-35962 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-35962?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.