{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89924","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.775Z","datePublished":"2026-09-16T10:32:17.442Z","dateUpdated":"2026-09-16T10:32:17.442Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-16T10:32:17.442Z"},"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/s390/kvm/guestdbg.c"],"versions":[{"version":"27291e2165b6de70c476b7b675308113edd69a60","lessThan":"124c81ee610e1fbdd93d4399f88d9e28ba97a941","status":"affected","versionType":"git"},{"version":"27291e2165b6de70c476b7b675308113edd69a60","lessThan":"e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4","status":"affected","versionType":"git"},{"version":"27291e2165b6de70c476b7b675308113edd69a60","lessThan":"c85d402553987777cc4742751437ea5dcbf98a7b","status":"affected","versionType":"git"},{"version":"27291e2165b6de70c476b7b675308113edd69a60","lessThan":"5fbf319137735252eefa507193c9a619af5b7457","status":"affected","versionType":"git"},{"version":"27291e2165b6de70c476b7b675308113edd69a60","lessThan":"4048d0a252163084794be3e37995b872c5178913","status":"affected","versionType":"git"},{"version":"27291e2165b6de70c476b7b675308113edd69a60","lessThan":"f55e4d415d95342d5753e528e05a1e8623992c3f","status":"affected","versionType":"git"},{"version":"27291e2165b6de70c476b7b675308113edd69a60","lessThan":"46cb8a273e2f853f89a78b59dbdff8787b6e1c86","status":"affected","versionType":"git"},{"version":"27291e2165b6de70c476b7b675308113edd69a60","lessThan":"aa9c8e8baf1e765fa65b93212522c636f25d846f","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/s390/kvm/guestdbg.c"],"versions":[{"version":"3.16","status":"affected"},{"version":"0","lessThan":"3.16","status":"unaffected","versionType":"semver"},{"version":"5.10.270","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.221","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.188","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.157","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.110","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.51","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.5","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"5.10.270"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"5.15.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.1.188"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"6.18.51"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"7.2.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.16","versionEndExcluding":"7.3-rc1"}]}]}],"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"}}}}