{"id":"CVE-2023-52639","state":"PUBLISHED","title":"KVM: s390: vsie: fix race during shadow creation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: vsie: fix race during shadow creation\n\nRight now it is possible to see gmap->private being zero in\nkvm_s390_vsie_gmap_notifier resulting in a crash.  This is due to the\nfact that we add gmap->private == kvm after creation:\n\nstatic int acquire_gmap_shadow(struct kvm_vcpu *vcpu,\n                               struct vsie_page *vsie_page)\n{\n[...]\n        gmap = gmap_shadow(vcpu->arch.gmap, asce, edat);\n        if (IS_ERR(gmap))\n                return PTR_ERR(gmap);\n        gmap->private = vcpu->kvm;\n\nLet children inherit the private field of the parent.","publishedAt":"2024-04-03T14:54:47.009Z","updatedAt":"2026-05-11T19:30:51.297Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a3508fbe9dc6dd3bece0c7bf889cc085a011738c","status":"affected","lessThan":"5df3b81a567eb565029563f26f374ae3803a1dfc","versionType":"git"},{"version":"a3508fbe9dc6dd3bece0c7bf889cc085a011738c","status":"affected","lessThan":"f5572c0323cf8b4f1f0618178648a25b8fb8a380","versionType":"git"},{"version":"a3508fbe9dc6dd3bece0c7bf889cc085a011738c","status":"affected","lessThan":"28bb27824f25f36e5f80229a358d66ee09244082","versionType":"git"},{"version":"a3508fbe9dc6dd3bece0c7bf889cc085a011738c","status":"affected","lessThan":"fe752331d4b361d43cfd0b89534b4b2176057c32","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/s390/kvm/vsie.c","arch/s390/mm/gmap.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.8","versionType":"semver"},{"version":"6.1.82","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.22","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.6","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/s390/kvm/vsie.c","arch/s390/mm/gmap.c"]}],"references":["https://git.kernel.org/stable/c/5df3b81a567eb565029563f26f374ae3803a1dfc","https://git.kernel.org/stable/c/f5572c0323cf8b4f1f0618178648a25b8fb8a380","https://git.kernel.org/stable/c/28bb27824f25f36e5f80229a358d66ee09244082","https://git.kernel.org/stable/c/fe752331d4b361d43cfd0b89534b4b2176057c32"],"weaknesses":[],"ingestedAt":"2026-10-29T20:06:33.064Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/52xxx/CVE-2023-52639.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2023-52639","state":"PUBLISHED","datePublished":"2024-04-03T14:54:47.009Z","dateUpdated":"2026-05-11T19:30:51.297Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-03-06T09:52:12.093Z"},"containers":{"cna":{"title":"KVM: s390: vsie: fix race during shadow creation","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: vsie: fix race during shadow creation\n\nRight now it is possible to see gmap->private being zero in\nkvm_s390_vsie_gmap_notifier resulting in a crash.  This is due to the\nfact that we add gmap->private == kvm after creation:\n\nstatic int acquire_gmap_shadow(struct kvm_vcpu *vcpu,\n                               struct vsie_page *vsie_page)\n{\n[...]\n        gmap = gmap_shadow(vcpu->arch.gmap, asce, edat);\n        if (IS_ERR(gmap))\n                return PTR_ERR(gmap);\n        gmap->private = vcpu->kvm;\n\nLet children inherit the private field of the parent."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a3508fbe9dc6dd3bece0c7bf889cc085a011738c","status":"affected","lessThan":"5df3b81a567eb565029563f26f374ae3803a1dfc","versionType":"git"},{"version":"a3508fbe9dc6dd3bece0c7bf889cc085a011738c","status":"affected","lessThan":"f5572c0323cf8b4f1f0618178648a25b8fb8a380","versionType":"git"},{"version":"a3508fbe9dc6dd3bece0c7bf889cc085a011738c","status":"affected","lessThan":"28bb27824f25f36e5f80229a358d66ee09244082","versionType":"git"},{"version":"a3508fbe9dc6dd3bece0c7bf889cc085a011738c","status":"affected","lessThan":"fe752331d4b361d43cfd0b89534b4b2176057c32","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/s390/kvm/vsie.c","arch/s390/mm/gmap.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.8","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.8","versionType":"semver"},{"version":"6.1.82","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.22","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.7.6","status":"unaffected","lessThanOrEqual":"6.7.*","versionType":"semver"},{"version":"6.8","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/s390/kvm/vsie.c","arch/s390/mm/gmap.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/5df3b81a567eb565029563f26f374ae3803a1dfc"},{"url":"https://git.kernel.org/stable/c/f5572c0323cf8b4f1f0618178648a25b8fb8a380"},{"url":"https://git.kernel.org/stable/c/28bb27824f25f36e5f80229a358d66ee09244082"},{"url":"https://git.kernel.org/stable/c/fe752331d4b361d43cfd0b89534b4b2176057c32"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:30:51.297Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"6.1.82"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"6.6.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"6.7.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8","versionEndExcluding":"6.8"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/5df3b81a567eb565029563f26f374ae3803a1dfc","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/f5572c0323cf8b4f1f0618178648a25b8fb8a380","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/28bb27824f25f36e5f80229a358d66ee09244082","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/fe752331d4b361d43cfd0b89534b4b2176057c32","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T23:03:21.359Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2023-52639","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T15:53:10.387746Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-09-11T17:33:33.290Z"}}]}}}