CVE-2026-89993

CVE-2026-89993: vulnerability in Linux

dmaengine: dw-edma: Initialize IRQ data before requesting IRQs

Published

3Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackepss 0.2%
exploitation probability
0.2%top 90% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw-edma: Initialize IRQ data before requesting IRQs dw_edma_irq_request() passes struct dw_edma_irq to request_irq() before dw_edma_channel_setup() fills the back pointer. A shared interrupt can therefore enter the handler with dw_irq->dw still NULL, leading to a NULL pointer dereference. Set the back pointer before installing each handler.
Affected products
Linux · Linux
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References
https://git.kernel.org/stable/c/07e50cef557def076418c67051a336e4c6bd50e1https://git.kernel.org/stable/c/17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91bahttps://git.kernel.org/stable/c/647217abea849d3d45f8cb0b8ee5b78d50f26985https://git.kernel.org/stable/c/b86280b12ccf33b68b309b7cb0e4476894dfe77chttps://git.kernel.org/stable/c/d232bc6cf4562132ef50644484dfd4b23a593295https://git.kernel.org/stable/c/d91fb6c0d10dad32929dc5c6850f89df34e1bfcdhttps://git.kernel.org/stable/c/fac202d73e7a649b7d4010325c6c6dcd9334fe65