{"api_version":"1","generated_at":"2026-09-17T07:14:47+00:00","cve":"CVE-2026-89924","urls":{"html":"https://cve.report/CVE-2026-89924","api":"https://cve.report/api/cve/CVE-2026-89924.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89924","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89924"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-09-16 11:17:01","updated_at":"2026-09-16 11:17:01"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/5fbf319137735252eefa507193c9a619af5b7457","name":"https://git.kernel.org/stable/c/5fbf319137735252eefa507193c9a619af5b7457","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4048d0a252163084794be3e37995b872c5178913","name":"https://git.kernel.org/stable/c/4048d0a252163084794be3e37995b872c5178913","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/c85d402553987777cc4742751437ea5dcbf98a7b","name":"https://git.kernel.org/stable/c/c85d402553987777cc4742751437ea5dcbf98a7b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f55e4d415d95342d5753e528e05a1e8623992c3f","name":"https://git.kernel.org/stable/c/f55e4d415d95342d5753e528e05a1e8623992c3f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4","name":"https://git.kernel.org/stable/c/e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/46cb8a273e2f853f89a78b59dbdff8787b6e1c86","name":"https://git.kernel.org/stable/c/46cb8a273e2f853f89a78b59dbdff8787b6e1c86","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/124c81ee610e1fbdd93d4399f88d9e28ba97a941","name":"https://git.kernel.org/stable/c/124c81ee610e1fbdd93d4399f88d9e28ba97a941","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/aa9c8e8baf1e765fa65b93212522c636f25d846f","name":"https://git.kernel.org/stable/c/aa9c8e8baf1e765fa65b93212522c636f25d846f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89924","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89924","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 27291e2165b6de70c476b7b675308113edd69a60 124c81ee610e1fbdd93d4399f88d9e28ba97a941 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 27291e2165b6de70c476b7b675308113edd69a60 e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 27291e2165b6de70c476b7b675308113edd69a60 c85d402553987777cc4742751437ea5dcbf98a7b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 27291e2165b6de70c476b7b675308113edd69a60 5fbf319137735252eefa507193c9a619af5b7457 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 27291e2165b6de70c476b7b675308113edd69a60 4048d0a252163084794be3e37995b872c5178913 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 27291e2165b6de70c476b7b675308113edd69a60 f55e4d415d95342d5753e528e05a1e8623992c3f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 27291e2165b6de70c476b7b675308113edd69a60 46cb8a273e2f853f89a78b59dbdff8787b6e1c86 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 27291e2165b6de70c476b7b675308113edd69a60 aa9c8e8baf1e765fa65b93212522c636f25d846f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.10.270 5.10.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.221 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1.188 6.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.51 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.5 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["arch/s390/kvm/guestdbg.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"124c81ee610e1fbdd93d4399f88d9e28ba97a941","status":"affected","version":"27291e2165b6de70c476b7b675308113edd69a60","versionType":"git"},{"lessThan":"e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4","status":"affected","version":"27291e2165b6de70c476b7b675308113edd69a60","versionType":"git"},{"lessThan":"c85d402553987777cc4742751437ea5dcbf98a7b","status":"affected","version":"27291e2165b6de70c476b7b675308113edd69a60","versionType":"git"},{"lessThan":"5fbf319137735252eefa507193c9a619af5b7457","status":"affected","version":"27291e2165b6de70c476b7b675308113edd69a60","versionType":"git"},{"lessThan":"4048d0a252163084794be3e37995b872c5178913","status":"affected","version":"27291e2165b6de70c476b7b675308113edd69a60","versionType":"git"},{"lessThan":"f55e4d415d95342d5753e528e05a1e8623992c3f","status":"affected","version":"27291e2165b6de70c476b7b675308113edd69a60","versionType":"git"},{"lessThan":"46cb8a273e2f853f89a78b59dbdff8787b6e1c86","status":"affected","version":"27291e2165b6de70c476b7b675308113edd69a60","versionType":"git"},{"lessThan":"aa9c8e8baf1e765fa65b93212522c636f25d846f","status":"affected","version":"27291e2165b6de70c476b7b675308113edd69a60","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["arch/s390/kvm/guestdbg.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.16"},{"lessThan":"3.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.10.*","status":"unaffected","version":"5.10.270","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.221","versionType":"semver"},{"lessThanOrEqual":"6.1.*","status":"unaffected","version":"6.1.188","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.51","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.10.270","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.221","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1.188","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.51","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.5","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"3.16","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-09-16T10:32:17.442Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/124c81ee610e1fbdd93d4399f88d9e28ba97a941"},{"url":"https://git.kernel.org/stable/c/e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4"},{"url":"https://git.kernel.org/stable/c/c85d402553987777cc4742751437ea5dcbf98a7b"},{"url":"https://git.kernel.org/stable/c/5fbf319137735252eefa507193c9a619af5b7457"},{"url":"https://git.kernel.org/stable/c/4048d0a252163084794be3e37995b872c5178913"},{"url":"https://git.kernel.org/stable/c/f55e4d415d95342d5753e528e05a1e8623992c3f"},{"url":"https://git.kernel.org/stable/c/46cb8a273e2f853f89a78b59dbdff8787b6e1c86"},{"url":"https://git.kernel.org/stable/c/aa9c8e8baf1e765fa65b93212522c636f25d846f"}],"title":"KVM: s390: Fix old_data leak in guest debug error path","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89924","datePublished":"2026-09-16T10:32:17.442Z","dateReserved":"2026-09-11T19:38:34.775Z","dateUpdated":"2026-09-16T10:32:17.442Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-16 11:17:01","lastModifiedDate":"2026-09-16 11:17:01","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89924","Ordinal":"1","Title":"KVM: s390: Fix old_data leak in guest debug error path","CVE":"CVE-2026-89924","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89924","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"KVM: s390: Fix old_data leak in guest debug error path"}]}}}