{"id":"CVE-2026-74515","revision":"45b08e96918b425e9fba20b5e43c6cd5","records":[{"revision":"45b08e96918b425e9fba20b5e43c6cd5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74515","aliases":[],"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":0,"publishedAt":"2026-08-15T12:27:35.567+00:00","modifiedAt":"2026-10-16T19:05:51.934+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"arch/s390/kvm/pci.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc\",\n                            \"lessThan\": \"642d2d1067f7c4d753ae0e3ba5bc98b43cfe3c70\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc\",\n                            \"lessThan\": \"78d9648e7e960546d5b72504a0b0358cd8bb1e9d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc\",\n                            \"lessThan\": \"6be1ff49ba81f96a6fa55915e6d920be43ac57cc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc\",\n                            \"lessThan\": \"6837f0ae85fd54cf64c8a0c7c530bba2fae0a207\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc\",\n                            \"lessThan\": \"591952b63a9f976da7d49f719f36ec826ee2a575\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"3c5a1b6f0a18520a0edd0600fef6f1a8553b8fdc\",\n                            \"lessThan\": \"8fa01be5a6149404adb82c0979a78f6347edd3ef\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"arch/s390/kvm/pci.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.0\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.151\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.103\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.44\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.8\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/642d2d1067f7c4d753ae0e3ba5bc98b43cfe3c70","https://git.kernel.org/stable/c/78d9648e7e960546d5b72504a0b0358cd8bb1e9d","https://git.kernel.org/stable/c/6be1ff49ba81f96a6fa55915e6d920be43ac57cc","https://git.kernel.org/stable/c/6837f0ae85fd54cf64c8a0c7c530bba2fae0a207","https://git.kernel.org/stable/c/591952b63a9f976da7d49f719f36ec826ee2a575","https://git.kernel.org/stable/c/8fa01be5a6149404adb82c0979a78f6347edd3ef"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74515","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74515","identifiers":["CVE-2026-74515"]},"retained":false,"historicalAffected":[]}],"coverage":[]}