CVE-2025-39965 - xfrm: xfrm_alloc_spi shouldn't use 0 as SPI

CVE-2025-39965 - xfrm: xfrm_alloc_spi shouldn't use 0 as SPI

https://cvefeed.io/rssfeed/latest.atom / Mon, 10/13/2025 - 17:43
CVE ID : CVE-2025-39965
Published : Oct. 13, 2025, 1:48 p.m. | 21 minutes ago
Description : 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.
Severity: 0.0 | NA
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