Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-53236

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 7.7%
CVSS Severity
CVSS v3 Score 5.5
Products affected by CVE-2026-53236


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