CVE-2025-40281

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains a flaw in the sctp transport update rto function that may lead to a shift-out-of-bounds condition. This issue was identified by syzbot, which reported a potential shift exponent that is too large for the 'unsigned int' type. The issue was triggered by the introduction of rto alpha max and rto beta max set to 1000. The vulnerability exists in net/sctp/transport.c at line 509. The function sctp transport update rto is affected.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.