{"id":"CVE-2023-52639","summary":"KVM: s390: vsie: fix race during shadow creation","details":"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-\u003eprivate being zero in\nkvm_s390_vsie_gmap_notifier resulting in a crash.  This is due to the\nfact that we add gmap-\u003eprivate == 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-\u003earch.gmap, asce, edat);\n        if (IS_ERR(gmap))\n                return PTR_ERR(gmap);\n        gmap-\u003eprivate = vcpu-\u003ekvm;\n\nLet children inherit the private field of the parent.","modified":"2026-04-02T09:43:10.263136Z","published":"2024-04-03T14:54:47.009Z","related":["SUSE-SU-2024:1466-1","SUSE-SU-2024:1480-1","SUSE-SU-2024:1490-1","SUSE-SU-2024:1643-1","SUSE-SU-2024:1646-1","SUSE-SU-2024:1870-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52639.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/28bb27824f25f36e5f80229a358d66ee09244082"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5df3b81a567eb565029563f26f374ae3803a1dfc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f5572c0323cf8b4f1f0618178648a25b8fb8a380"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fe752331d4b361d43cfd0b89534b4b2176057c32"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52639.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52639"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"a3508fbe9dc6dd3bece0c7bf889cc085a011738c"},{"fixed":"5df3b81a567eb565029563f26f374ae3803a1dfc"},{"fixed":"f5572c0323cf8b4f1f0618178648a25b8fb8a380"},{"fixed":"28bb27824f25f36e5f80229a358d66ee09244082"},{"fixed":"fe752331d4b361d43cfd0b89534b4b2176057c32"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52639.json"}}],"schema_version":"1.7.5"}