Description
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Delay freeing of shadow S2 structures until VM destruction We free the shadow S2 structures from kvm_arch_flush_shadow_all(), which is a Bad Idea(tm). Freeing the page tables is fair game (this is what this callback is for), but freeing the container that could still be referenced by another part of the system is not great. Instead, grow separate destructors that gets called when we tear the VM down for good. From there, we can nuke both the individual MMUs as well as the global array that points to them, safe in the knowledge that the vcpus themselves have been destroyed already.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4f128f8e1aaac189f83d0f828bcdb2986d8d2e51 to < 876049f026b4dfaca0cc78ec81be0e639ca8525daffected4f128f8e1aaac189f83d0f828bcdb2986d8d2e51 to < 22e82acec93a681071ed36f70eabe2d0c4e0bebdaffected4f128f8e1aaac189f83d0f828bcdb2986d8d2e51 to < 5bf1c9175e657b3c2dc1cf77403031ac7aadcf66affected4f128f8e1aaac189f83d0f828bcdb2986d8d2e51 to < e5843f4effaa2ffac3e789ecd4456403564961d4affected
Linux Linux
Default version status: affected
6.11affected0 to < 6.11unaffected6.12.113 to ≤ 6.12.*unaffected6.18.56 to ≤ 6.18.*unaffected7.2.9 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected