CVE-2026-90123: vulnerability in Linux
irqchip/ast2700-intc: Avoid allocating in the irq_domain activate() callback
Published
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 91% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
irqchip/ast2700-intc: Avoid allocating in the irq_domain activate() callback
The interrupt core calls the irq_domain_activate() callback from
__setup_irq() with desc->lock held and interrupts disabled. Both
aspeed_intc1_irq_domain_activate() and aspeed_intc0_resolve_route() test a
compatible string with fwnode_device_is_compatible().
fwnode_device_is_compatible() invokes fwnode_property_match_string(), which
allocates with GFP_KERNEL. That's obviously not possible with interrupts
disabled and a raw spinlock held.
Both call sites are only ever handed OF nodes, so use
of_device_is_compatible() instead: it walks the property in place and does
not allocate.
Affected products
Linux · LinuxRelated CVEs — Linux
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