Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: synproxy: add mutex to guard hook reference counting As the synproxy infrastructure register netfilter hooks on-demand when a user adds the first iptables target or nftables expression, if done concurrently they can race each other. Introduce a mutex to serialize the refcount control blocks access from both frontends. While a per namespace mutex might be more efficient, it is not needed for target/expression like SYNPROXY.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | ad49d86e07a497e834cb06f2b151dccd75f8e148 to <0ec9ddc1bda261a2c57636c74c8b4e53000102c9; ad49d86e07a497e834cb06f2b151dccd75f8e148 to <56ffbe3a08c01dcdb0d6adee9ce1e535bfb3b389; ad49d86e07a497e834cb06f2b151dccd75f8e148 to <debc57b83d5b323df74bf010c8d50fe26ad2ed6b; ad49d86e07a497e834cb06f2b151dccd75f8e148 to <0f8ba5e4c53d2e4a536aa68140beda9fe59b2f88; ad49d86e07a497e834cb06f2b151dccd75f8e148 to <640441348258220e78daed40528b85b8afcedab6; ad49d86e07a497e834cb06f2b151dccd75f8e148 to <aaf80701dc2f7a48fe543961e21f8ca3924d587c; ad49d86e07a497e834cb06f2b151dccd75f8e148 to <fbf0591275f50eae5733c3d7a8cd6c1e79933ffa; ad49d86e07a497e834cb06f2b151dccd75f8e148 to <2fcba19caaeb2a33017459d3430f057967bb91b6 |
| Linux | Linux | 5.3; 0 to <5.3; 5.10.259 to <=5.10.*; 5.15.210 to <=5.15.*; 6.1.176 to <=6.1.*; 6.6.143 to <=6.6.*; 6.12.94 to <=6.12.*; 6.18.36 to <=6.18.*; 7.0.13 to <=7.0.*; 7.1 to <=* |
References
- https://git.kernel.org/stable/c/0ec9ddc1bda261a2c57636c74c8b4e53000102c9
- https://git.kernel.org/stable/c/56ffbe3a08c01dcdb0d6adee9ce1e535bfb3b389
- https://git.kernel.org/stable/c/debc57b83d5b323df74bf010c8d50fe26ad2ed6b
- https://git.kernel.org/stable/c/0f8ba5e4c53d2e4a536aa68140beda9fe59b2f88
- https://git.kernel.org/stable/c/640441348258220e78daed40528b85b8afcedab6
- https://git.kernel.org/stable/c/aaf80701dc2f7a48fe543961e21f8ca3924d587c
- https://git.kernel.org/stable/c/fbf0591275f50eae5733c3d7a8cd6c1e79933ffa
- https://git.kernel.org/stable/c/2fcba19caaeb2a33017459d3430f057967bb91b6
Generated from the official CVE List on 25 Jun 2026 10:14 UTC.