CVE-2026-89925

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89925", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.775Z", "datePublished": "2026-09-16T10:32:18.111Z", "dateUpdated": "2026-10-19T08:55:00.155Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:55:00.155Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: Fix memory leak in guest debug handling\n\nbp_data is freed only for the error case by kfree(bp_data).\nEvery successful KVM_SET_GUEST_DEBUG will leak bp_data."}], "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": 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"https://git.kernel.org/stable/c/5940418e4232a2ff1d30ba12e0d213dbf48f0a83"}, {"url": "https://git.kernel.org/stable/c/fc2034c431adcbaabf5f8a01912358f07355349e"}, {"url": "https://git.kernel.org/stable/c/44bf3792c10f4bb3de507391f1837e020d92eaa2"}, {"url": "https://git.kernel.org/stable/c/581be9f6085834188cef1ad2f07babf3b421e409"}, {"url": "https://git.kernel.org/stable/c/121ea1de927c8b9bfdf53c31cad27b86d5de0293"}], "title": "KVM: s390: Fix memory leak in guest debug handling", "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": "39e7cebb889839b5762c9ad22e2d715b5883b288", "status": "affected", "version": "27291e2165b6de70c476b7b675308113edd69a60", "versionType": "git"}, {"lessThan": "58b1b729a9f90c80b508fc3e2174cbc0ee50859e", "status": "affected", "version": "27291e2165b6de70c476b7b675308113edd69a60", "versionType": "git"}, {"lessThan": "9071f75cbde3bf46119cb28e92cfbef830c4bf97", "status": "affected", "version": "27291e2165b6de70c476b7b675308113edd69a60", "versionType": "git"}, {"lessThan": "5940418e4232a2ff1d30ba12e0d213dbf48f0a83", "status": "affected", "version": "27291e2165b6de70c476b7b675308113edd69a60", "versionType": "git"}, {"lessThan": "fc2034c431adcbaabf5f8a01912358f07355349e", "status": "affected", "version": "27291e2165b6de70c476b7b675308113edd69a60", "versionType": "git"}, {"lessThan": "44bf3792c10f4bb3de507391f1837e020d92eaa2", "status": "affected", "version": "27291e2165b6de70c476b7b675308113edd69a60", "versionType": "git"}, {"lessThan": "581be9f6085834188cef1ad2f07babf3b421e409", "status": "affected", "version": "27291e2165b6de70c476b7b675308113edd69a60", "versionType": "git"}, {"lessThan": "121ea1de927c8b9bfdf53c31cad27b86d5de0293", "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 memory leak in guest debug handling\n\nbp_data is freed only for the error case by kfree(bp_data).\nEvery successful KVM_SET_GUEST_DEBUG will leak bp_data."}], "id": "CVE-2026-89925", "lastModified": "2026-10-19T09:18:38.040", "metrics": {}, "published": "2026-09-16T11:17:01.653", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/121ea1de927c8b9bfdf53c31cad27b86d5de0293"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/39e7cebb889839b5762c9ad22e2d715b5883b288"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/44bf3792c10f4bb3de507391f1837e020d92eaa2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/581be9f6085834188cef1ad2f07babf3b421e409"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/58b1b729a9f90c80b508fc3e2174cbc0ee50859e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/5940418e4232a2ff1d30ba12e0d213dbf48f0a83"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/9071f75cbde3bf46119cb28e92cfbef830c4bf97"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/fc2034c431adcbaabf5f8a01912358f07355349e"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: KVM: s390: Fix memory leak in guest debug handling", "id": "2535114", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2535114"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nKVM: s390: Fix memory leak in guest debug handling\nbp_data is freed only for the error case by kfree(bp_data).\nEvery successful KVM_SET_GUEST_DEBUG will leak bp_data.", "A flaw was found in KVM's guest debug handling within the Linux kernel. A local user, by repeatedly calling `KVM_SET_GUEST_DEBUG`, can trigger a memory leak. This occurs because the `bp_data` is not freed after a successful debug operation. Over time, this can lead to resource exhaustion and a Denial of Service (DoS) on the system."], "name": "CVE-2026-89925", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89925\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89925\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89925.mbox"], "threat_severity": "Low"}

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