CVE-2026-98847 rtc: spear: initialize IRQ state before requesting alarm IRQ
A race condition in the Linux kernel RTC driver allows a local attacker to cause a denial of service by triggering an interrupt during device initialization.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-98847?
CVE-2026-98847 is a vulnerability in Linux, published on 18 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
rtc: spear: initialize IRQ state before requesting alarm IRQ
devm_request_irq() enables the interrupt before it returns, so the handler may run while probe is still initializing the device. Initialize the MMIO address and spinlock before requesting the alarm IRQ.
Which versions are affected by CVE-2026-98847?
How do I fix CVE-2026-98847?
Apply the vendor's patch.
Is CVE-2026-98847 being exploited?
There is no known exploitation of CVE-2026-98847 in the wild and no public exploit code.
Sources
Also known as AZL-108593, BELL-CVE-2026-98847, DEBIAN-CVE-2026-98847, GHSA-8gmj-mrfm-vm8g, UBUNTU-CVE-2026-98847.