Description
In the Linux kernel, the following vulnerability has been resolved: dmaengine: sh: rz-dmac: Move interrupt request after everything is set up Once the interrupt is requested, the interrupt handler may run immediately. Since the IRQ handler can access channel->ch_base, which is initialized only after requesting the IRQ, this may lead to invalid memory access. Likewise, the IRQ thread may access uninitialized data (the ld_free, ld_queue, and ld_active lists), which may also lead to issues. Request the interrupts only after everything is set up. To keep the error path simpler, use dmam_alloc_coherent() instead of dma_alloc_coherent().
References7
- git.kernel.org/stable/c/07ae600bd353b22f31a8f1007269744fafc7f123
- git.kernel.org/stable/c/0e0c5b3cf374ebf3c589741751e1fbc67f53ec2f
- git.kernel.org/stable/c/2a4d9e2234c3f817bb0ddbc8680d09ce9be84f93
- git.kernel.org/stable/c/5b12de6229d662864ee22c11d4876652b40120f0
- git.kernel.org/stable/c/731712403ddb39d1a76a11abf339a0615bc85de7
- git.kernel.org/stable/c/d24d53323e817d79a4bd111bd10b34dbc96e64a8
- git.kernel.org/stable/c/ec9f66c91bffdb69d309bae6dfb387562db7ebc8
Metrics
- CVSS 3.1
-
8.4
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 8 · as of 11 November 2026
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