{"id":"CVE-2026-89769","revision":"db76dda1dbd642fcb95898c15bbaacb1","records":[{"revision":"db76dda1dbd642fcb95898c15bbaacb1","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89769","aliases":[],"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":0,"publishedAt":"2026-09-11T19:47:08.87+00:00","modifiedAt":"2026-10-19T08:52:22.773+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                        \"drivers/clocksource/timer-nxp-pit.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"bee33f22d7c30626e711b4900e3f460b6e0e104f\",\n                            \"lessThan\": \"d53c29a89a15e56a1797f3ef249955e544782e04\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bee33f22d7c30626e711b4900e3f460b6e0e104f\",\n                            \"lessThan\": \"cdcd861123248e871c2ec2be968b0a1b2a5a34b0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bee33f22d7c30626e711b4900e3f460b6e0e104f\",\n                            \"lessThan\": \"05520e035f8332c8e33f3011b5ca016fde61793d\",\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                        \"drivers/clocksource/timer-nxp-pit.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.50\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.4\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\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:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":7.4,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/d53c29a89a15e56a1797f3ef249955e544782e04","https://git.kernel.org/stable/c/cdcd861123248e871c2ec2be968b0a1b2a5a34b0","https://git.kernel.org/stable/c/05520e035f8332c8e33f3011b5ca016fde61793d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89769","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89769","identifiers":["CVE-2026-89769"]},"retained":false,"historicalAffected":[]}],"coverage":[]}