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
2026-05-07T04:17:21.802716Z
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 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23083.json",
    "cna_assigner": "Linux"
}
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"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.18.0
Fixed
5.10.249
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.199
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.162
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.122
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.68
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.8

Database specific

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