CVE-2026-53269
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.
Metadata
Severity & Metrics
No CVSS data available.
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | ad49d86e07a497e834cb06f2b151dccd75f8e148 < 0ec9ddc1bda261a2c57636c74c8b4e53000102c9, ad49d86e07a497e834cb06f2b151dccd75f8e148 < 56ffbe3a08c01dcdb0d6adee9ce1e535bfb3b389, ad49d86e07a497e834cb06f2b151dccd75f8e148 < debc57b83d5b323df74bf010c8d50fe26ad2ed6b, ad49d86e07a497e834cb06f2b151dccd75f8e148 < 0f8ba5e4c53d2e4a536aa68140beda9fe59b2f88 … |
| Linux | Linux | — | 5.3, 0 < 5.3, 5.10.259 ≤ 5.10.*, 5.15.210 ≤ 5.15.* … |
References (8)
- 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