{"id":"CVE-2026-89924","revision":"939cdc1a45684d12bd6217feb99ed00b","records":[{"revision":"939cdc1a45684d12bd6217feb99ed00b","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89924","aliases":[],"title":"KVM: s390: Fix old_data leak in guest debug error path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Fix old_data leak in guest debug error path\n\n__import_wp_info() allocates a per-watchpoint old_data buffer to back up\nthe original guest memory contents. If a later watchpoint of the same\nKVM_SET_GUEST_DEBUG request fails to import, kvm_s390_import_bp_data()\njumps to the error label, which frees the wp_info array but not the\nold_data buffers of the entries that were imported successfully. Up to\nMAX_BP_COUNT - 1 buffers of up to MAX_WP_SIZE bytes are leaked per failed\nrequest, and the request can be repeated.\n\nCreate error handling for cleaning up all created old_data memory\nareas.","state":0,"publishedAt":"2026-09-16T10:32:17.442+00:00","modifiedAt":"2026-10-19T08:54:59.186+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/guestdbg.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"124c81ee610e1fbdd93d4399f88d9e28ba97a941\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"c85d402553987777cc4742751437ea5dcbf98a7b\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"5fbf319137735252eefa507193c9a619af5b7457\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"4048d0a252163084794be3e37995b872c5178913\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"f55e4d415d95342d5753e528e05a1e8623992c3f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"46cb8a273e2f853f89a78b59dbdff8787b6e1c86\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"27291e2165b6de70c476b7b675308113edd69a60\",\n                            \"lessThan\": \"aa9c8e8baf1e765fa65b93212522c636f25d846f\",\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/guestdbg.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\": \"5.10.270\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.221\",\n                            \"lessThanOrEqual\": \"5.15.*\",\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":[],"references":["https://git.kernel.org/stable/c/124c81ee610e1fbdd93d4399f88d9e28ba97a941","https://git.kernel.org/stable/c/e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4","https://git.kernel.org/stable/c/c85d402553987777cc4742751437ea5dcbf98a7b","https://git.kernel.org/stable/c/5fbf319137735252eefa507193c9a619af5b7457","https://git.kernel.org/stable/c/4048d0a252163084794be3e37995b872c5178913","https://git.kernel.org/stable/c/f55e4d415d95342d5753e528e05a1e8623992c3f","https://git.kernel.org/stable/c/46cb8a273e2f853f89a78b59dbdff8787b6e1c86","https://git.kernel.org/stable/c/aa9c8e8baf1e765fa65b93212522c636f25d846f"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89924","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89924","identifiers":["CVE-2026-89924"]},"retained":false,"historicalAffected":[]}],"coverage":[]}