In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: fix race during shadow creation Right now it is possible to see gmap->private being zero in kvms390vsiegmapnotifier resulting in a crash. This is due to the fact that we add gmap->private == kvm after creation: static int acquiregmapshadow(struct kvmvcpu *vcpu, struct vsiepage *vsiepage) { [...] gmap = gmapshadow(vcpu->arch.gmap, asce, edat); if (ISERR(gmap)) return PTRERR(gmap); gmap->private = vcpu->kvm; Let children inherit the private field of the parent.
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{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "linux-image-6.8.0-1001-raspi-dbgsym": "6.8.0-1001.1", "linux-image-6.8.0-1001-raspi": "6.8.0-1001.1", "linux-raspi-headers-6.8.0-1001": "6.8.0-1001.1", "linux-modules-6.8.0-1001-raspi": "6.8.0-1001.1", "linux-buildinfo-6.8.0-1001-raspi": "6.8.0-1001.1", "linux-headers-6.8.0-1001-raspi": "6.8.0-1001.1", "linux-tools-6.8.0-1001-raspi": "6.8.0-1001.1", "linux-raspi-tools-6.8.0-1001": "6.8.0-1001.1" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "linux-buildinfo-6.8.0-20-generic": "6.8.0-20.20.1", "linux-riscv-headers-6.8.0-20": "6.8.0-20.20.1", "linux-image-6.8.0-20-generic": "6.8.0-20.20.1", "linux-modules-6.8.0-20-generic": "6.8.0-20.20.1", "linux-riscv-tools-6.8.0-20": "6.8.0-20.20.1", "linux-tools-6.8.0-20-generic": "6.8.0-20.20.1", "linux-image-6.8.0-20-generic-dbgsym": "6.8.0-20.20.1", "linux-headers-6.8.0-20-generic": "6.8.0-20.20.1" } ] }