{"api_version":"1","generated_at":"2026-08-16T20:17:34+00:00","cve":"CVE-2026-74515","urls":{"html":"https://cve.report/CVE-2026-74515","api":"https://cve.report/api/cve/CVE-2026-74515.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-74515","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74515"},"summary":{"title":"KVM: s390: pci: Reject adapter interrupt forwarding if already enabled","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: pci: Reject adapter interrupt forwarding if already enabled\n\nThe MPCIFC instruction doesn't allow registering adapter interrupts without\nfirst unregistering. So reject any request to enable interrupt forwarding\nif its already enabled for the zPCI device. This also fixes overwriting and\nthus leaking resources when the ioctl is called multiple times for the same\ndevice.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-08-15 13:17:56","updated_at":"2026-08-15 13:17:56"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/591952b63a9f976da7d49f719f36ec826ee2a575","name":"https://git.kernel.org/stable/c/591952b63a9f976da7d49f719f36ec826ee2a575","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/8fa01be5a6149404adb82c0979a78f6347edd3ef","name":"https://git.kernel.org/stable/c/8fa01be5a6149404adb82c0979a78f6347edd3ef","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6837f0ae85fd54cf64c8a0c7c530bba2fae0a207","name":"https://git.kernel.org/stable/c/6837f0ae85fd54cf64c8a0c7c530bba2fae0a207","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/78d9648e7e960546d5b72504a0b0358cd8bb1e9d","name":"https://git.kernel.org/stable/c/78d9648e7e960546d5b72504a0b0358cd8bb1e9d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/6be1ff49ba81f96a6fa55915e6d920be43ac57cc","name":"https://git.kernel.org/stable/c/6be1ff49ba81f96a6fa55915e6d920be43ac57cc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-74515","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74515","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc 78d9648e7e960546d5b72504a0b0358cd8bb1e9d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc 6be1ff49ba81f96a6fa55915e6d920be43ac57cc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc 6837f0ae85fd54cf64c8a0c7c530bba2fae0a207 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc 591952b63a9f976da7d49f719f36ec826ee2a575 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc 8fa01be5a6149404adb82c0979a78f6347edd3ef git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.151 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.103 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.44 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.8 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc6 * 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/pci.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"78d9648e7e960546d5b72504a0b0358cd8bb1e9d","status":"affected","version":"3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc","versionType":"git"},{"lessThan":"6be1ff49ba81f96a6fa55915e6d920be43ac57cc","status":"affected","version":"3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc","versionType":"git"},{"lessThan":"6837f0ae85fd54cf64c8a0c7c530bba2fae0a207","status":"affected","version":"3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc","versionType":"git"},{"lessThan":"591952b63a9f976da7d49f719f36ec826ee2a575","status":"affected","version":"3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc","versionType":"git"},{"lessThan":"8fa01be5a6149404adb82c0979a78f6347edd3ef","status":"affected","version":"3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["arch/s390/kvm/pci.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.0"},{"lessThan":"6.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.151","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.103","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.44","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.8","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc6","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.151","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.103","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.44","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.8","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc6","versionStartIncluding":"6.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: pci: Reject adapter interrupt forwarding if already enabled\n\nThe MPCIFC instruction doesn't allow registering adapter interrupts without\nfirst unregistering. So reject any request to enable interrupt forwarding\nif its already enabled for the zPCI device. This also fixes overwriting and\nthus leaking resources when the ioctl is called multiple times for the same\ndevice."}],"providerMetadata":{"dateUpdated":"2026-08-15T12:27:35.567Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/78d9648e7e960546d5b72504a0b0358cd8bb1e9d"},{"url":"https://git.kernel.org/stable/c/6be1ff49ba81f96a6fa55915e6d920be43ac57cc"},{"url":"https://git.kernel.org/stable/c/6837f0ae85fd54cf64c8a0c7c530bba2fae0a207"},{"url":"https://git.kernel.org/stable/c/591952b63a9f976da7d49f719f36ec826ee2a575"},{"url":"https://git.kernel.org/stable/c/8fa01be5a6149404adb82c0979a78f6347edd3ef"}],"title":"KVM: s390: pci: Reject adapter interrupt forwarding if already enabled","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-74515","datePublished":"2026-08-15T12:27:35.567Z","dateReserved":"2026-08-15T05:44:03.910Z","dateUpdated":"2026-08-15T12:27:35.567Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-15 13:17:56","lastModifiedDate":"2026-08-15 13:17:56","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"74515","Ordinal":"1","Title":"KVM: s390: pci: Reject adapter interrupt forwarding if already e","CVE":"CVE-2026-74515","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"74515","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: pci: Reject adapter interrupt forwarding if already enabled\n\nThe MPCIFC instruction doesn't allow registering adapter interrupts without\nfirst unregistering. So reject any request to enable interrupt forwarding\nif its already enabled for the zPCI device. This also fixes overwriting and\nthus leaking resources when the ioctl is called multiple times for the same\ndevice.","Type":"Description","Title":"KVM: s390: pci: Reject adapter interrupt forwarding if already e"}]}}}