A flaw was found in KVM. When calling the KVM_GET_DEBUGREGS ioctl, on 32-bit systems, there might be some uninitialized portions of the kvm_debugregs structure that could be copied to userspace, causing an information leak.
[
{
"vendor": "n/a",
"product": "Linux kernel (KVM)",
"versions": [
{
"version": "Fixed in kernel 6.2",
"status": "affected"
}
]
}
]
bugzilla.redhat.com/show_bug.cgi?id=2179892
github.com/torvalds/linux/commit/2c10b61421a28e95a46ab489fd56c0f442ff6952
lists.debian.org/debian-lts-announce/2023/05/msg00005.html
lists.debian.org/debian-lts-announce/2023/05/msg00006.html
lore.kernel.org/kvm/20230214103304.3689213-1-gregkh%40linuxfoundation.org/