CVE-2026-89769: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: bee33f22d7c30626e711b4900e3f460b6e0e104f преди d53c29a89a15e56a1797f3ef249955e544782e04; bee33f22d7c30626e711b4900e3f460b6e0e104f преди cdcd861123248e871c2ec2be968b0a1b2a5a34b0; bee33f22d7c30626e711b4900e3f460b6e0e104f преди 05520e035f8332c8e33f3011b5ca016fde61793d
• Linux Linux: 6.18; преди 6.18; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89769
• https://nvd.nist.gov/vuln/detail/CVE-2026-89769
• https://git.kernel.org/stable/c/d53c29a89a15e56a1797f3ef249955e544782e04
• https://git.kernel.org/stable/c/cdcd861123248e871c2ec2be968b0a1b2a5a34b0
• https://git.kernel.org/stable/c/05520e035f8332c8e33f3011b5ca016fde61793d