CVE-2026-98320
netfilter: flowtable: hold reference on ct until flow is released
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: hold reference on ct until flow is released nf_ct_put() releases the ct->ext area inmediately, the rcu typesafe semantics also allow to refer to the wrong conntrack from the flowtable datapath. Hold reference on ct until flow is released after rcu grace period. Add rcu_barrier() on module exit path, to ensure pending flow entries are release before module goes away.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 6, 2026 |
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Affected Versions
Linux / Linux
0ff90b6c20340e57616a51ae1a1bf18156d6638a < 93ff1594be1aad4da364462dd8db050ebcfda2de 0ff90b6c20340e57616a51ae1a1bf18156d6638a < eed6997e8dc40593a539fcc722e7ed51b18db86c 0ff90b6c20340e57616a51ae1a1bf18156d6638a < 61c6688be282277c6e91ab286a7acd0ae8681ac6 0ff90b6c20340e57616a51ae1a1bf18156d6638a < a43cd2b67b91e943273c913237a7a88c50cdcfbc 0ff90b6c20340e57616a51ae1a1bf18156d6638a < 8274cdc5f9c57e17ed77fc4ba76212536c840f25 0ff90b6c20340e57616a51ae1a1bf18156d6638a < 12c1ac230f4ca16e0017b62a963ab75e0b48074f 0ff90b6c20340e57616a51ae1a1bf18156d6638a < d9e6175a3ee48209ee65f294fc567b4e16b29b74 0ff90b6c20340e57616a51ae1a1bf18156d6638a < e75a9fa1d44bcbd66ea02e8781bcca6ea4076e0d
Linux / Linux
4.16
References
git.kernel.org: https://git.kernel.org/stable/c/93ff1594be1aad4da364462dd8db050ebcfda2de git.kernel.org: https://git.kernel.org/stable/c/eed6997e8dc40593a539fcc722e7ed51b18db86c git.kernel.org: https://git.kernel.org/stable/c/61c6688be282277c6e91ab286a7acd0ae8681ac6 git.kernel.org: https://git.kernel.org/stable/c/a43cd2b67b91e943273c913237a7a88c50cdcfbc git.kernel.org: https://git.kernel.org/stable/c/8274cdc5f9c57e17ed77fc4ba76212536c840f25 git.kernel.org: https://git.kernel.org/stable/c/12c1ac230f4ca16e0017b62a963ab75e0b48074f git.kernel.org: https://git.kernel.org/stable/c/d9e6175a3ee48209ee65f294fc567b4e16b29b74 git.kernel.org: https://git.kernel.org/stable/c/e75a9fa1d44bcbd66ea02e8781bcca6ea4076e0d