CVE-2026-89769clocksource/drivers/nxp-pit: Fix IRQ leak on cpuhp_setup_state error path
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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.
- CVSS
- 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from bee33f22d7c30626e711b4900e3f460b6e0e104f before d53c29a89a15e56a1797f3ef249955e544782e04; from bee33f22d7c30626e711b4900e3f460b6e0e104f before cdcd861123248e871c2ec2be968b0a1b2a5a34b0; from bee33f22d7c30626e711b4900e3f460b6e0e104f before 05520e035f8332c8e33f3011b5ca016fde61793d | CNA record |
References
- https://git.kernel.org/stable/c/d53c29a89a15e56a1797f3ef249955e544782e04
- https://git.kernel.org/stable/c/cdcd861123248e871c2ec2be968b0a1b2a5a34b0
- https://git.kernel.org/stable/c/05520e035f8332c8e33f3011b5ca016fde61793d
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.