{"id":"CVE-2026-31574","state":"PUBLISHED","title":"clockevents: Add missing resets of the next_event_forced flag","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nclockevents: Add missing resets of the next_event_forced flag\n\nThe prevention mechanism against timer interrupt starvation missed to reset\nthe next_event_forced flag in a couple of places:\n\n    - When the clock event state changes. That can cause the flag to be\n      stale over a shutdown/startup sequence\n\n    - When a non-forced event is armed, which then prevents rearming before\n      that event. If that event is far out in the future this will cause\n      missed timer interrupts.\n\n    - In the suspend wakeup handler.\n\nThat led to stalls which have been reported by several people.\n\nAdd the missing resets, which fixes the problems for the reporters.","publishedAt":"2026-04-24T14:42:06.707Z","updatedAt":"2026-06-14T17:41:57.072Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d6e152d905bdb1f32f9d99775e2f453350399a6a","status":"affected","lessThan":"9401b593fa48218d2667df1610b0ebc518554880","versionType":"git"},{"version":"d6e152d905bdb1f32f9d99775e2f453350399a6a","status":"affected","lessThan":"4096fd0e8eaea13ebe5206700b33f49635ae18e5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/time/clockevents.c","kernel/time/tick-broadcast.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.0","versionType":"semver"},{"version":"7.0.1","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/time/clockevents.c","kernel/time/tick-broadcast.c"]}],"references":["https://git.kernel.org/stable/c/9401b593fa48218d2667df1610b0ebc518554880","https://git.kernel.org/stable/c/4096fd0e8eaea13ebe5206700b33f49635ae18e5"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/31xxx/CVE-2026-31574.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31574","state":"PUBLISHED","datePublished":"2026-04-24T14:42:06.707Z","dateUpdated":"2026-06-14T17:41:57.072Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-03-09T15:48:24.119Z"},"containers":{"cna":{"title":"clockevents: Add missing resets of the next_event_forced flag","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nclockevents: Add missing resets of the next_event_forced flag\n\nThe prevention mechanism against timer interrupt starvation missed to reset\nthe next_event_forced flag in a couple of places:\n\n    - When the clock event state changes. That can cause the flag to be\n      stale over a shutdown/startup sequence\n\n    - When a non-forced event is armed, which then prevents rearming before\n      that event. If that event is far out in the future this will cause\n      missed timer interrupts.\n\n    - In the suspend wakeup handler.\n\nThat led to stalls which have been reported by several people.\n\nAdd the missing resets, which fixes the problems for the reporters."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"d6e152d905bdb1f32f9d99775e2f453350399a6a","status":"affected","lessThan":"9401b593fa48218d2667df1610b0ebc518554880","versionType":"git"},{"version":"d6e152d905bdb1f32f9d99775e2f453350399a6a","status":"affected","lessThan":"4096fd0e8eaea13ebe5206700b33f49635ae18e5","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/time/clockevents.c","kernel/time/tick-broadcast.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"7.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"7.0","versionType":"semver"},{"version":"7.0.1","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/time/clockevents.c","kernel/time/tick-broadcast.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/9401b593fa48218d2667df1610b0ebc518554880"},{"url":"https://git.kernel.org/stable/c/4096fd0e8eaea13ebe5206700b33f49635ae18e5"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-06-14T17:41:57.072Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0","versionEndExcluding":"7.0.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"7.0","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}