CVE-2026-89769
CVE CVE-2026-89769EUVD EUVD-2026-76681Published 2026-09-11T19:47:08.000ZLast changed 2026-09-13T06:34:11.000ZCVSS 7.4
What the advisory describes
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.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux bee33f22d7c30626e711b4900e3f460b6e0e104f <05520e035f8332c8e33f3011b5ca016fde61793d; patch: 7.3-rc1; patch: 7.2.4; bee33f22d7c30626e711b4900e3f460b6e0e104f <cdcd861123248e871c2ec2be968b0a1b2a5a34b0; patch: 6.18.50; bee33f22d7c30626e711b4900e3f460b6e0e104f <d53c29a89a15e56a1797f3ef249955e544782e04; 6.18; patch: 0
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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