{"id":"CVE-2026-98469","revision":"df8862d61269459a97ae14da63ebfff7","records":[{"revision":"df8862d61269459a97ae14da63ebfff7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98469","aliases":[],"title":"KVM: arm64: Fix AArch32 DBGBXVR<n> handling","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Fix AArch32 DBGBXVR<n> handling\n\nThe consolidation of the breakpoint and watchpoint register accessors\nswitched DBGBXVR<n> from trap_bvr() to trap_dbg_wb_reg(). The latter\nselects backing storage with demux_wb_reg(), which only handles Op2 values\n4 through 7. Since DBGBXVR<n> uses Op2 1, an AArch32 guest access hits\nKVM_BUG_ON() and marks the VM dead.\n\nDBGBXVR<n> aliases DBGBVR<n>_EL1[63:32], and its AA32(HI) descriptor\nalready selects the upper half. Map Op2 1 to dbg_bvr[] alongside Op2 4,\nrestoring the pre-regression behavior.","state":0,"publishedAt":"2026-10-18T15:15:22.065+00:00","modifiedAt":"2026-10-19T09:20:07.266+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/arm64/kvm/sys_regs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3ce9f3357e9e099f02feaa002769eb99ef1138cd\",\n                            \"lessThan\": \"8530a05b304d312fe7dfbc5df7d3e87cc31b256a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3ce9f3357e9e099f02feaa002769eb99ef1138cd\",\n                            \"lessThan\": \"af6813d16ace2765011ca1c567be86ade1d1ee8e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3ce9f3357e9e099f02feaa002769eb99ef1138cd\",\n                            \"lessThan\": \"6b1bca1b1ab77f60a62087337bfe6e2f0efb9e6d\",\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/arm64/kvm/sys_regs.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.14\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.14\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.55\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.9\",\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":[],"references":["https://git.kernel.org/stable/c/8530a05b304d312fe7dfbc5df7d3e87cc31b256a","https://git.kernel.org/stable/c/af6813d16ace2765011ca1c567be86ade1d1ee8e","https://git.kernel.org/stable/c/6b1bca1b1ab77f60a62087337bfe6e2f0efb9e6d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98469","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98469","identifiers":["CVE-2026-98469"]},"retained":false,"historicalAffected":[]}],"coverage":[]}