Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
0ff90b6c20340e57616a51ae1a1bf18156d6638a to < 93ff1594be1aad4da364462dd8db050ebcfda2deaffected0ff90b6c20340e57616a51ae1a1bf18156d6638a to < eed6997e8dc40593a539fcc722e7ed51b18db86caffected0ff90b6c20340e57616a51ae1a1bf18156d6638a to < 61c6688be282277c6e91ab286a7acd0ae8681ac6affected0ff90b6c20340e57616a51ae1a1bf18156d6638a to < a43cd2b67b91e943273c913237a7a88c50cdcfbcaffected0ff90b6c20340e57616a51ae1a1bf18156d6638a to < 8274cdc5f9c57e17ed77fc4ba76212536c840f25affected0ff90b6c20340e57616a51ae1a1bf18156d6638a to < 12c1ac230f4ca16e0017b62a963ab75e0b48074faffected0ff90b6c20340e57616a51ae1a1bf18156d6638a to < d9e6175a3ee48209ee65f294fc567b4e16b29b74affected0ff90b6c20340e57616a51ae1a1bf18156d6638a to < e75a9fa1d44bcbd66ea02e8781bcca6ea4076e0daffected
Linux Linux
Default version status: affected
4.16affected0 to < 4.16unaffected5.10.271 to ≤ 5.10.*unaffected5.15.222 to ≤ 5.15.*unaffected6.1.189 to ≤ 6.1.*unaffected6.6.158 to ≤ 6.6.*unaffected6.12.112 to ≤ 6.12.*unaffected6.18.54 to ≤ 6.18.*unaffected7.2.8 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/93ff1594be1aad4da364462dd8db050ebcfda2de ↗
- https://git.kernel.org/stable/c/eed6997e8dc40593a539fcc722e7ed51b18db86c ↗
- https://git.kernel.org/stable/c/61c6688be282277c6e91ab286a7acd0ae8681ac6 ↗
- https://git.kernel.org/stable/c/a43cd2b67b91e943273c913237a7a88c50cdcfbc ↗
- https://git.kernel.org/stable/c/8274cdc5f9c57e17ed77fc4ba76212536c840f25 ↗
- https://git.kernel.org/stable/c/12c1ac230f4ca16e0017b62a963ab75e0b48074f ↗
- https://git.kernel.org/stable/c/d9e6175a3ee48209ee65f294fc567b4e16b29b74 ↗
- https://git.kernel.org/stable/c/e75a9fa1d44bcbd66ea02e8781bcca6ea4076e0d ↗