CVE-2025-39931

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

Description An issue exists in the Linux kernel's crypto/af alg component where a crash can occur if an error interrupts the af alg sendmsg function. Specifically, if an error causes the function to abort, the ctx->merge variable may contain an invalid value from a previous loop iteration. This can lead to a crash when af alg sendmsg attempts an invalid merge operation on a subsequent entry. The fix involves setting ctx->merge to zero early in the loop to prevent this condition.

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