{"id":"CVE-2026-89922","revision":"fb731613de7f452dabdbd4b9e782af2f","records":[{"revision":"fb731613de7f452dabdbd4b9e782af2f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89922","aliases":[],"title":"KVM: s390: Take srcu when importing watchpoint data","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Take srcu when importing watchpoint data\n\n__import_wp_info() backs up the original guest memory contents of a\nwatchpoint with read_guest_abs(), which is kvm_read_guest() and therefore\nresolves the memslot via __kvm_memslots(). That requires kvm->srcu (or\nkvm->slots_lock) to be held, otherwise a concurrent memslot update can\nfree the memslots array under us once its SRCU grace period has elapsed.\n\nAs this is not fast path, following lock ordering (mutex first, then\nsrcu) take the big hammer and hold the srcu for the full import.","state":0,"publishedAt":"2026-09-16T10:32:16.11+00:00","modifiedAt":"2026-10-19T08:54:57.247+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"arch/s390/kvm/kvm-s390.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"6830fbc3724bf49c142aae69a4694f115fa9cedd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"f8e3a9997d5ecd56ebe4b262ff424516c068fecb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"76f5b4ea9ed0aa5a34bda9d8a878f2c73026ec03\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"cc710ee45395efb4937e042960f791d33924e5f6\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"4c05bf21d1806853e662cc19e744736a3408f155\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"a4e482def8533ebace517d9f67f1465841b1f982\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"arch/s390/kvm/kvm-s390.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.16\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.16\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.188\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.157\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.110\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.51\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.5\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/6830fbc3724bf49c142aae69a4694f115fa9cedd","https://git.kernel.org/stable/c/f8e3a9997d5ecd56ebe4b262ff424516c068fecb","https://git.kernel.org/stable/c/76f5b4ea9ed0aa5a34bda9d8a878f2c73026ec03","https://git.kernel.org/stable/c/cc710ee45395efb4937e042960f791d33924e5f6","https://git.kernel.org/stable/c/4c05bf21d1806853e662cc19e744736a3408f155","https://git.kernel.org/stable/c/a4e482def8533ebace517d9f67f1465841b1f982"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89922","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89922","identifiers":["CVE-2026-89922"]},"retained":false,"historicalAffected":[]}],"coverage":[]}