CVE-2026-23083

UNKNOWN 0.0

fou: Don't allow 0 for FOU_ATTR_IPPROTO.

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

Vendor	linux
Product	linux
Ecosystems	Linux Kernel
Industries	Technology
Published	Feb 4, 2026
Last Updated	May 11, 2026

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Affected Versions

Linux / Linux

23461551c00628c3f3fe9cf837bf53cf8f212b63 < c7498f9bc390479ccfad7c7f2332237ff4945b03 23461551c00628c3f3fe9cf837bf53cf8f212b63 < 611ef4bd9c73d9e6d87bed57a635ff1fdd8c91ea 23461551c00628c3f3fe9cf837bf53cf8f212b63 < 6e983789b7588ee59cbf303583546c043bad8e19 23461551c00628c3f3fe9cf837bf53cf8f212b63 < 1cc98b8887cabb1808d2f4a37cd10a7be7574771 23461551c00628c3f3fe9cf837bf53cf8f212b63 < b7db31a52c3862a1a32202a273a4c32e7f5f4823 23461551c00628c3f3fe9cf837bf53cf8f212b63 < 9b75dff8446ec871030d8daf5a69e74f5fe8b956 23461551c00628c3f3fe9cf837bf53cf8f212b63 < 7a9bc9e3f42391e4c187e099263cf7a1c4b69ff5

Linux / Linux

3.18

References

NVD ↗ CVE.org ↗ EPSS Data ↗

git.kernel.org: https://git.kernel.org/stable/c/c7498f9bc390479ccfad7c7f2332237ff4945b03 git.kernel.org: https://git.kernel.org/stable/c/611ef4bd9c73d9e6d87bed57a635ff1fdd8c91ea git.kernel.org: https://git.kernel.org/stable/c/6e983789b7588ee59cbf303583546c043bad8e19 git.kernel.org: https://git.kernel.org/stable/c/1cc98b8887cabb1808d2f4a37cd10a7be7574771 git.kernel.org: https://git.kernel.org/stable/c/b7db31a52c3862a1a32202a273a4c32e7f5f4823 git.kernel.org: https://git.kernel.org/stable/c/9b75dff8446ec871030d8daf5a69e74f5fe8b956 git.kernel.org: https://git.kernel.org/stable/c/7a9bc9e3f42391e4c187e099263cf7a1c4b69ff5