CVE-2025-39965

In the Linux kernel, the following vulnerability has been resolved: xfrm: xfrm_alloc_spi shouldn't use 0 as SPI x->id.spi == 0 means "no SPI assigned", but since commit 94f39804d891 ("xfrm: Duplicate SPI Handling"), we now create states and add them to the byspi list with this value. __xfrm_state_delete doesn't remove those states from the byspi list, since they shouldn't be there, and this shows up as a UAF the next time we go through the byspi list.

Affected products

Linux Kernel, Linuxmint, Suse, Ubuntu

Linux Linux Kernel

< 6.6.109, 6.12.50, 6.16, 6.16.10, 6.17

CVSS 3.1

7.8 HIGH

EPSS

0.2% (8th percentile)

NVD status

Modified

Published

2025-10-13