{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-74515 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-74515 is a high-severity denial of service vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-74515 and fix it if it is affected.\n\nWhat it is: CVE-2026-74515 is a high-severity denial of service vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-74515 in the wild and no public exploit code.\n\nAffected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-74515/ (Markdown: https://insights.sbomify.com/CVE-2026-74515/index.md)","id":"CVE-2026-74515","markdown":"https://insights.sbomify.com/CVE-2026-74515/index.md","name":"CVE-2026-74515","record":{"aliases":["ALSA-2026:89814","ALSA-2026:89816","BELL-CVE-2026-74515","DEBIAN-CVE-2026-74515","GHSA-269x-pqmw-g2f4","RLSA-2026:89814","RLSA-2026:89816","UBUNTU-CVE-2026-74515"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel KVM","requires_auth":"low_privilege","summary":"A missing check in KVM s390 PCI allows resource leaks via repeated interrupt forwarding requests, potentially causing denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[],"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.","ecosystems":["AlmaLinux:8","Rocky Linux:8"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"KVM: s390: pci: Reject adapter interrupt forwarding if already enabled","id":"CVE-2026-74515","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":37,"n_references":6,"next":{"headline":"KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active","id":"CVE-2026-74516"},"packages":[{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"bpftool","purl":"pkg:rpm/almalinux/bpftool","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/almalinux/kernel","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-abi-stablelists","purl":"pkg:rpm/almalinux/kernel-abi-stablelists","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-core","purl":"pkg:rpm/almalinux/kernel-core","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-cross-headers","purl":"pkg:rpm/almalinux/kernel-cross-headers","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug","purl":"pkg:rpm/almalinux/kernel-debug","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-core","purl":"pkg:rpm/almalinux/kernel-debug-core","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-devel","purl":"pkg:rpm/almalinux/kernel-debug-devel","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules","purl":"pkg:rpm/almalinux/kernel-debug-modules","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-debug-modules-extra","purl":"pkg:rpm/almalinux/kernel-debug-modules-extra","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-devel","purl":"pkg:rpm/almalinux/kernel-devel","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-doc","purl":"pkg:rpm/almalinux/kernel-doc","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-headers","purl":"pkg:rpm/almalinux/kernel-headers","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-modules","purl":"pkg:rpm/almalinux/kernel-modules","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-modules-extra","purl":"pkg:rpm/almalinux/kernel-modules-extra","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.rt7.520.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt","purl":"pkg:rpm/almalinux/kernel-rt","source":"ALSA-2026:89814"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.rt7.520.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-core","purl":"pkg:rpm/almalinux/kernel-rt-core","source":"ALSA-2026:89814"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.rt7.520.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug","purl":"pkg:rpm/almalinux/kernel-rt-debug","source":"ALSA-2026:89814"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.rt7.520.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-core","purl":"pkg:rpm/almalinux/kernel-rt-debug-core","source":"ALSA-2026:89814"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.rt7.520.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-devel","purl":"pkg:rpm/almalinux/kernel-rt-debug-devel","source":"ALSA-2026:89814"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.rt7.520.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-modules","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules","source":"ALSA-2026:89814"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.rt7.520.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-debug-modules-extra","purl":"pkg:rpm/almalinux/kernel-rt-debug-modules-extra","source":"ALSA-2026:89814"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.rt7.520.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-devel","purl":"pkg:rpm/almalinux/kernel-rt-devel","source":"ALSA-2026:89814"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.rt7.520.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-modules","purl":"pkg:rpm/almalinux/kernel-rt-modules","source":"ALSA-2026:89814"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.rt7.520.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt-modules-extra","purl":"pkg:rpm/almalinux/kernel-rt-modules-extra","source":"ALSA-2026:89814"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-tools","purl":"pkg:rpm/almalinux/kernel-tools","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-tools-libs","purl":"pkg:rpm/almalinux/kernel-tools-libs","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-tools-libs-devel","purl":"pkg:rpm/almalinux/kernel-tools-libs-devel","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump","purl":"pkg:rpm/almalinux/kernel-zfcpdump","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-core","purl":"pkg:rpm/almalinux/kernel-zfcpdump-core","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-devel","purl":"pkg:rpm/almalinux/kernel-zfcpdump-devel","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-modules","purl":"pkg:rpm/almalinux/kernel-zfcpdump-modules","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-zfcpdump-modules-extra","purl":"pkg:rpm/almalinux/kernel-zfcpdump-modules-extra","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"perf","purl":"pkg:rpm/almalinux/perf","source":"ALSA-2026:89816"},{"ecosystem":"AlmaLinux:8","fixed":["4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"python3-perf","purl":"pkg:rpm/almalinux/python3-perf","source":"ALSA-2026:89816"},{"ecosystem":"Rocky Linux:8","fixed":["0:4.18.0-553.179.1.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel","purl":"pkg:rpm/rocky-linux/kernel?distro=rocky-linux-8\u0026epoch=0","source":"RLSA-2026:89816"},{"ecosystem":"Rocky Linux:8","fixed":["0:4.18.0-553.179.1.rt7.520.el8_10"],"introduced":["0"],"last_affected":[],"package":"kernel-rt","purl":"pkg:rpm/rocky-linux/kernel-rt?distro=rocky-linux-8\u0026epoch=0","source":"RLSA-2026:89814"}],"prev":{"headline":"KVM: s390: pci: Fix memory accounting for pinned/unpinned pages","id":"CVE-2026-74514"},"products":["Linux"],"published":"2026-08-15","related":[],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-16","vendors":["Linux"]},"summary":"A missing check in KVM s390 PCI allows resource leaks via repeated interrupt forwarding requests, potentially causing denial of service.","url":"https://insights.sbomify.com/CVE-2026-74515/"}