VULNERABILITY INTELLIGENCE

CVE-2026-53236

CVSS score5.5 MEDIUM
EPSS probability0.13%
CISA KEVNot currently listed
Published2026-06-25
Last modified2026-10-15
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • nvd@nist.gov: NVD-CWE-noinfo

Primary references