{"api_version":"1","generated_at":"2026-09-12T03:12:58+00:00","cve":"CVE-2026-89769","urls":{"html":"https://cve.report/CVE-2026-89769","api":"https://cve.report/api/cve/CVE-2026-89769.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89769","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89769"},"summary":{"title":"clocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state error path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nclocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state error path\n\nWhen cpuhp_setup_state fails after pit_clockevent_per_cpu_init has\nsuccessfully called request_irq, the error handling jumps directly to\nout_pit_clocksource_unregister without freeing the registered IRQ.\n\nThis leaks the IRQ line and, since kfree(pit) follows, leaves a\ndangling pointer registered as the interrupt handler's dev_id,\npotentially leading to a use-after-free if the IRQ fires afterwards.\n\nFix it by calling pit_clockevent_per_cpu_exit to properly release the\nIRQ before falling through to the existing cleanup chain.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:20:08","updated_at":"2026-09-11 20:20:08"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/cdcd861123248e871c2ec2be968b0a1b2a5a34b0","name":"https://git.kernel.org/stable/c/cdcd861123248e871c2ec2be968b0a1b2a5a34b0","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/d53c29a89a15e56a1797f3ef249955e544782e04","name":"https://git.kernel.org/stable/c/d53c29a89a15e56a1797f3ef249955e544782e04","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/05520e035f8332c8e33f3011b5ca016fde61793d","name":"https://git.kernel.org/stable/c/05520e035f8332c8e33f3011b5ca016fde61793d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89769","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89769","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bee33f22d7c30626e711b4900e3f460b6e0e104f d53c29a89a15e56a1797f3ef249955e544782e04 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bee33f22d7c30626e711b4900e3f460b6e0e104f cdcd861123248e871c2ec2be968b0a1b2a5a34b0 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected bee33f22d7c30626e711b4900e3f460b6e0e104f 05520e035f8332c8e33f3011b5ca016fde61793d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.18","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * 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":["drivers/clocksource/timer-nxp-pit.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"d53c29a89a15e56a1797f3ef249955e544782e04","status":"affected","version":"bee33f22d7c30626e711b4900e3f460b6e0e104f","versionType":"git"},{"lessThan":"cdcd861123248e871c2ec2be968b0a1b2a5a34b0","status":"affected","version":"bee33f22d7c30626e711b4900e3f460b6e0e104f","versionType":"git"},{"lessThan":"05520e035f8332c8e33f3011b5ca016fde61793d","status":"affected","version":"bee33f22d7c30626e711b4900e3f460b6e0e104f","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/clocksource/timer-nxp-pit.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.18"},{"lessThan":"6.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"6.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.18","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nclocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state error path\n\nWhen cpuhp_setup_state fails after pit_clockevent_per_cpu_init has\nsuccessfully called request_irq, the error handling jumps directly to\nout_pit_clocksource_unregister without freeing the registered IRQ.\n\nThis leaks the IRQ line and, since kfree(pit) follows, leaves a\ndangling pointer registered as the interrupt handler's dev_id,\npotentially leading to a use-after-free if the IRQ fires afterwards.\n\nFix it by calling pit_clockevent_per_cpu_exit to properly release the\nIRQ before falling through to the existing cleanup chain."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:47:08.870Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/d53c29a89a15e56a1797f3ef249955e544782e04"},{"url":"https://git.kernel.org/stable/c/cdcd861123248e871c2ec2be968b0a1b2a5a34b0"},{"url":"https://git.kernel.org/stable/c/05520e035f8332c8e33f3011b5ca016fde61793d"}],"title":"clocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state error path","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89769","datePublished":"2026-09-11T19:47:08.870Z","dateReserved":"2026-09-11T19:38:34.765Z","dateUpdated":"2026-09-11T19:47:08.870Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:20:08","lastModifiedDate":"2026-09-11 20:20:08","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89769","Ordinal":"1","Title":"clocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state e","CVE":"CVE-2026-89769","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89769","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nclocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state error path\n\nWhen cpuhp_setup_state fails after pit_clockevent_per_cpu_init has\nsuccessfully called request_irq, the error handling jumps directly to\nout_pit_clocksource_unregister without freeing the registered IRQ.\n\nThis leaks the IRQ line and, since kfree(pit) follows, leaves a\ndangling pointer registered as the interrupt handler's dev_id,\npotentially leading to a use-after-free if the IRQ fires afterwards.\n\nFix it by calling pit_clockevent_per_cpu_exit to properly release the\nIRQ before falling through to the existing cleanup chain.","Type":"Description","Title":"clocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state e"}]}}}