Debian/xen: high 7.3
The EVTCHNOP_expand_array hypercall checks for whether FIFO event channels are enabled, but without holding the correct lock. It can race with EVTCHNOP_reset, resulting in dereferencing a NULL pointer
Action: Upgrade xen to 4.20.3+127-gc42374a105-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 4.20.3+127-gc42374a105-1 | - |
Fixed versions
| 4.20.3+127-gc42374a105-1 |
Sources
published · modified · JSON