{"id":"CVE-2026-80547","title":"s390/vfio_ccw: Implement a crw lock","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio_ccw: Implement a crw lock\n\nUnlike the channel_program struct, which covers synchronous I/O\nsubmissions and asynchronous interrupts, the CRW region relies\nexcl…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < 3c94d4179bcc19e01b28db634c07a58b28116209","Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < 0edd222730a9d7ec98368aaf1d40ee2d8d862e61","Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < a3d60ae24183eee352c8e87a0ff94c97cd87f156","Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < 49fa26b0df009dc1f420980bd71780e70615b83b","Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < 7902be374cbfc11c3435e1e87bf22195bf06a558","Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < c76c4ee72bfc3824f4f491f18ed0323bf2e2daf9","Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < 16b0798024c0e9117e395829ddbbe70981c79d9c","Linux 5.8"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T19:16:58.374900Z"},"published":"2026-08-26","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:26:25.722Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80547","references":[{"url":"https://git.kernel.org/stable/c/3c94d4179bcc19e01b28db634c07a58b28116209"},{"url":"https://git.kernel.org/stable/c/0edd222730a9d7ec98368aaf1d40ee2d8d862e61"},{"url":"https://git.kernel.org/stable/c/a3d60ae24183eee352c8e87a0ff94c97cd87f156"},{"url":"https://git.kernel.org/stable/c/49fa26b0df009dc1f420980bd71780e70615b83b"},{"url":"https://git.kernel.org/stable/c/7902be374cbfc11c3435e1e87bf22195bf06a558"},{"url":"https://git.kernel.org/stable/c/c76c4ee72bfc3824f4f491f18ed0323bf2e2daf9"},{"url":"https://git.kernel.org/stable/c/16b0798024c0e9117e395829ddbbe70981c79d9c"}],"tags":["cve.org"],"epss":0.00176,"epssPercentile":0.06654,"ingestedAt":"2026-10-16T19:46:24.319Z","slug":"CVE-2026-80547","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio_ccw: Implement a crw lock\n\nUnlike the channel_program struct, which covers synchronous I/O\nsubmissions and asynchronous interrupts, the CRW region relies\nexclusively on asynchronous events coming from hardware.\n\nImplement a lock to manage the list of those payloads, to ensure\nthey are read cohesively.\n\n## Affected\n\n- `Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < 3c94d4179bcc19e01b28db634c07a58b28116209`\n- `Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < 0edd222730a9d7ec98368aaf1d40ee2d8d862e61`\n- `Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < a3d60ae24183eee352c8e87a0ff94c97cd87f156`\n- `Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < 49fa26b0df009dc1f420980bd71780e70615b83b`\n- `Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < 7902be374cbfc11c3435e1e87bf22195bf06a558`\n- `Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < c76c4ee72bfc3824f4f491f18ed0323bf2e2daf9`\n- `Linux >= 3f02cb2fd9d2d9e8762102886e3e4b51285797ee < 16b0798024c0e9117e395829ddbbe70981c79d9c`\n- `Linux 5.8`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}