High · published October 13, 2025
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.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 6.6.103, < 6.6.109 | 6.6.109 |
| linux/linux_kernel | ≥ 6.12.43, < 6.12.50 | 6.12.50 |
| linux/linux_kernel | ≥ 6.15.11, < 6.16 | 6.16 |
| linux/linux_kernel | ≥ 6.16.2, < 6.16.10 | 6.16.10 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |