Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: fou: Don't allow 0 for FOU_ATTR_IPPROTO. fou_udp_recv() has the same problem mentioned in the previous patch. If FOU_ATTR_IPPROTO is set to 0, skb is not freed by fou_udp_recv() nor "resubmit"-ted in ip_protocol_deliver_rcu(). Let's forbid 0 for FOU_ATTR_IPPROTO.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.18, < 5.10.249 |
References
- https://git.kernel.org/stable/c/1cc98b8887cabb1808d2f4a37cd10a7be7574771Patch
- https://git.kernel.org/stable/c/611ef4bd9c73d9e6d87bed57a635ff1fdd8c91eaPatch
- https://git.kernel.org/stable/c/6e983789b7588ee59cbf303583546c043bad8e19Patch
- https://git.kernel.org/stable/c/7a9bc9e3f42391e4c187e099263cf7a1c4b69ff5Patch
- https://git.kernel.org/stable/c/9b75dff8446ec871030d8daf5a69e74f5fe8b956Patch
- https://git.kernel.org/stable/c/b7db31a52c3862a1a32202a273a4c32e7f5f4823Patch
- https://git.kernel.org/stable/c/c7498f9bc390479ccfad7c7f2332237ff4945b03Patch
FAQ
What is CVE-2026-23083?
CVE-2026-23083 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: fou: Don't allow 0 for FOU_ATTR_IPPROTO. fou_udp_recv() has the same problem mentioned in the previous patch. If FOU_ATTR_IPPROTO...
How severe is CVE-2026-23083?
CVE-2026-23083 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23083?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.