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CVE-2026-53236

MEDIUM CVSS: 5.5 Published: 2026-06-25 Modified: 2026-07-08

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.

Affected Platforms

Linux Linux Kernel

Weakness Type

NVD-CWE-noinfo

References