CVE-2026-89924

{"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": "2026-10-19T08:54:59.186Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:54:59.186Z"}, "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", "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"}]}]}], "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"}}}}

{}

{"affected": [{"affectedData": [{"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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-89924", "lastModified": "2026-10-19T09:18:37.927", "metrics": {}, "published": "2026-09-16T11:17:01.527", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/124c81ee610e1fbdd93d4399f88d9e28ba97a941"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4048d0a252163084794be3e37995b872c5178913"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/46cb8a273e2f853f89a78b59dbdff8787b6e1c86"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5fbf319137735252eefa507193c9a619af5b7457"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/aa9c8e8baf1e765fa65b93212522c636f25d846f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c85d402553987777cc4742751437ea5dcbf98a7b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f55e4d415d95342d5753e528e05a1e8623992c3f"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27291e2165b6de70c476b7b675308113edd69a60,124c81ee610e1fbdd93d4399f88d9e28ba97a941)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27291e2165b6de70c476b7b675308113edd69a60,e5ae7816e5ad145618f7fd568a0e8a94dd9f81f4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27291e2165b6de70c476b7b675308113edd69a60,c85d402553987777cc4742751437ea5dcbf98a7b)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27291e2165b6de70c476b7b675308113edd69a60,5fbf319137735252eefa507193c9a619af5b7457)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27291e2165b6de70c476b7b675308113edd69a60,4048d0a252163084794be3e37995b872c5178913)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27291e2165b6de70c476b7b675308113edd69a60,f55e4d415d95342d5753e528e05a1e8623992c3f)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27291e2165b6de70c476b7b675308113edd69a60,46cb8a273e2f853f89a78b59dbdff8787b6e1c86)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27291e2165b6de70c476b7b675308113edd69a60,aa9c8e8baf1e765fa65b93212522c636f25d846f)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.16"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,3.16)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.270,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.221,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.188,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.157,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.51,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.5,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-17T11:00:06.935798+00:00", "updated": "2026-09-18T03:30:02.244037+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-401"]}