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Change History

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_ER

kernel.org https://git.kernel.org/stable/c/28bb27824f25f36e5f80229a358d66ee09244082 [No types assigned]

kernel.org https://git.kernel.org/stable/c/5df3b81a567eb565029563f26f374ae3803a1dfc [No types assigned]

kernel.org https://git.kernel.org/stable/c/f5572c0323cf8b4f1f0618178648a25b8fb8a380 [No types assigned]

kernel.org https://git.kernel.org/stable/c/fe752331d4b361d43cfd0b89534b4b2176057c32 [No types assigned]