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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | <Â any | UNKNOWN |
ubuntu | 22.04 | noarch | linux | <Â any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | <Â any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | <Â any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | <Â any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws-6.5 | <Â any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | <Â any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure | <Â any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure-5.15 | <Â any | UNKNOWN |
ubuntu | 22.04 | noarch | linux-azure-6.5 | <Â any | UNKNOWN |
git.kernel.org/linus/fe752331d4b361d43cfd0b89534b4b2176057c32 (6.8-rc4)
git.kernel.org/stable/c/28bb27824f25f36e5f80229a358d66ee09244082
git.kernel.org/stable/c/5df3b81a567eb565029563f26f374ae3803a1dfc
git.kernel.org/stable/c/f5572c0323cf8b4f1f0618178648a25b8fb8a380
git.kernel.org/stable/c/fe752331d4b361d43cfd0b89534b4b2176057c32
launchpad.net/bugs/cve/CVE-2023-52639
nvd.nist.gov/vuln/detail/CVE-2023-52639
security-tracker.debian.org/tracker/CVE-2023-52639
www.cve.org/CVERecord?id=CVE-2023-52639