High · published September 15, 2025
In the Linux kernel, the following vulnerability has been resolved:
KVM: s390/diag: fix racy access of physical cpu number in diag 9c handler
We do check for target CPU == -1, but this might change at the time we
are going to use it. Hold the physical target CPU in a local variable to
avoid out-of-bound accesses to the cpu arrays.
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 5.13, < 5.15.121 | 5.15.121 |
| linux/linux_kernel | ≥ 5.16, < 6.1.39 | 6.1.39 |
| linux/linux_kernel | ≥ 6.2, < 6.4.4 | 6.4.4 |