linux: In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: fix race during shadow creation...
CVE-2023-52639 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-52639, released April 3, 2024. It is not reported as exploited. Patch Radar priority: Routine.
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 kvm_s390_vsie_gmap_notifier resulting in a crash. This is due to the fact that we add gmap->private == kvm after creation: static int acquire_gmap_shadow(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) { [...] gmap = gmap_shadow(vcpu->arch.gmap, asce, edat); if (IS_ERR(gmap)) return PTR_ERR(gmap); gmap->private = vcpu->kvm; Let children inherit the private field of the parent.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| linux · Debian 12.15 (bookworm) | 6.1.82-1 | DEBIAN-CVE-2023-52639 | Apr 3, 2024 |
| linux · Debian 13.5 (trixie) | 6.7.7-1 | DEBIAN-CVE-2023-52639 | Apr 3, 2024 |
| linux · Debian 14 | 6.7.7-1 | DEBIAN-CVE-2023-52639 | Apr 3, 2024 |
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