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CVE-2026-72146

HIGHCVSS 8.4/10EPSS 0.18%

Last modified

CVE-2026-72146 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. 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().. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

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().

Metrics

CVSS 3.1
8.4/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.18%

7.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 5000d37042a61ca556fde2782ca40dbfa802ea16, < d24d53323e817d79a4bd111bd10b34dbc96e64a8; >= 5000d37042a61ca556fde2782ca40dbfa802ea16, < 0e0c5b3cf374ebf3c589741751e1fbc67f53ec2f; >= 5000d37042a61ca556fde2782ca40dbfa802ea16, < 5b12de6229d662864ee22c11d4876652b40120f0; >= 5000d37042a61ca556fde2782ca40dbfa802ea16, < 2a4d9e2234c3f817bb0ddbc8680d09ce9be84f93; >= 5000d37042a61ca556fde2782ca40dbfa802ea16, < ec9f66c91bffdb69d309bae6dfb387562db7ebc8; >= 5000d37042a61ca556fde2782ca40dbfa802ea16, < 07ae600bd353b22f31a8f1007269744fafc7f123; >= 5000d37042a61ca556fde2782ca40dbfa802ea16, < 731712403ddb39d1a76a11abf339a0615bc85de7
LinuxLinux5.15

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-72146?
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().
How severe is CVE-2026-72146?
CVE-2026-72146 has a CVSS score of 8.4/10 (HIGH severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-72146?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST