CVE-2026-23083

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Source
https://cve.org/CVERecord?id=CVE-2026-23083
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23083.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-23083
Downstream
Related
Published
2026-02-04T16:08:07.561Z
Modified
2026-03-24T08:59:25.803480Z
Summary
fou: Don't allow 0 for FOU_ATTR_IPPROTO.
Details

In the Linux kernel, the following vulnerability has been resolved:

fou: Don't allow 0 for FOUATTRIPPROTO.

fouudprecv() has the same problem mentioned in the previous patch.

If FOUATTRIPPROTO is set to 0, skb is not freed by fouudprecv() nor "resubmit"-ted in ipprotocoldeliver_rcu().

Let's forbid 0 for FOUATTRIPPROTO.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23083.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
23461551c00628c3f3fe9cf837bf53cf8f212b63
Fixed
c7498f9bc390479ccfad7c7f2332237ff4945b03
Fixed
611ef4bd9c73d9e6d87bed57a635ff1fdd8c91ea
Fixed
6e983789b7588ee59cbf303583546c043bad8e19
Fixed
1cc98b8887cabb1808d2f4a37cd10a7be7574771
Fixed
b7db31a52c3862a1a32202a273a4c32e7f5f4823
Fixed
9b75dff8446ec871030d8daf5a69e74f5fe8b956
Fixed
7a9bc9e3f42391e4c187e099263cf7a1c4b69ff5

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23083.json"