CVE-2026-89769High· 7.4▾ TwilightIn the Linux kernel, the following vulnerability has been resolved: clocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state error path When cpuhp_setup_state fails after pit_clockevent_per_cpu_init has successfully called reques…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 40.7 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 7.5
— → 7.5
none → high
— → 7.4
none → high
7.4 → 7.5
7.5 → 7.4
7.4 → 7.5
7.5 → 5.5
high → medium
0.2% → 0.2%
Last analysed / modified upstream
5.5 → 7.4
medium → high
In the Linux kernel, the following vulnerability has been resolved:
clocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state error path
When cpuhp_setup_state fails after pit_clockevent_per_cpu_init has successfully called request_irq, the error handling jumps directly to out_pit_clocksource_unregister without freeing the registered IRQ.
This leaks the IRQ line and, since kfree(pit) follows, leaves a dangling pointer registered as the interrupt handler's dev_id, potentially leading to a use-after-free if the IRQ fires afterwards.
Fix it by calling pit_clockevent_per_cpu_exit to properly release the IRQ before falling through to the existing cleanup chain.
Linux >= bee33f22d7c30626e711b4900e3f460b6e0e104f < d53c29a89a15e56a1797f3ef249955e544782e04Linux >= bee33f22d7c30626e711b4900e3f460b6e0e104f < cdcd861123248e871c2ec2be968b0a1b2a5a34b0Linux >= bee33f22d7c30626e711b4900e3f460b6e0e104f < 05520e035f8332c8e33f3011b5ca016fde61793dLinux 6.18Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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