CVE-2026-53236
Description
In the Linux kernel, the following vulnerability has been resolved:
tcp: restrict SO_ATTACH_FILTER to priv users
This patch restricts the use of SO_ATTACH_FILTER (cBPF) on TCP sockets
to users with CAP_NET_ADMIN capability.
This blocks potential side-channel attack where an unprivileged application
attaches a filter to leak TCP sequence/acknowledgment numbers.
Metadata
Severity & Metrics
No CVSS data available.
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3747de241a66ef2c7032d2cc2b826a47c5fa0f6a, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ecfe9171b26ae3eed0cd8bab7a943e9e2c9e51ba, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 82b3e7ce10c53fc12aab8904745603efc74f8c07, 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ede69b8f6670600e534591664584f810d7c385f9 … |
| Linux | Linux | — | 2.6.12, 0 < 2.6.12, 6.1.176 ≤ 6.1.*, 6.6.143 ≤ 6.6.* … |
References (6)
- https://git.kernel.org/stable/c/3747de241a66ef2c7032d2cc2b826a47c5fa0f6a
- https://git.kernel.org/stable/c/ecfe9171b26ae3eed0cd8bab7a943e9e2c9e51ba
- https://git.kernel.org/stable/c/82b3e7ce10c53fc12aab8904745603efc74f8c07
- https://git.kernel.org/stable/c/ede69b8f6670600e534591664584f810d7c385f9
- https://git.kernel.org/stable/c/c68517a3e18e20997808821c5559d0cba4d776c1
- https://git.kernel.org/stable/c/5d39580f68e6ddeedd15e587282207489dfb3da2