CVE-2026-72146
Linux kernel sh rz-dmac IRQ ordering bug can cause kernel memory access issues.
Is CVE-2026-72146 being exploited?
Not confirmed. CVE-2026-72146 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.18% probability of exploitation in the next 30 days.
How severe is CVE-2026-72146?
CVE-2026-72146 is rated High with a CVSS score of 8.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-72146?
Yes. A fix has been recorded for CVE-2026-72146. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-72146 affect?
CVE-2026-72146 affects Linux kernel (dmaengine sh rz-dmac driver), Embedded devices using SuperH SoCs, Linux-based routers/industrial controllers using this driver. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-72146?
Apply kernel update/patch that fixes sh rz-dmac IRQ ordering and reboot affected hosts.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
IRQ handler may access uninitialized memory causing kernel crash (DoS) or memory corruption with potential privilege escalation.
Patch when possible
- affected>= 5000d37042a61ca556fde2782ca40dbfa802ea16 and < d24d53323e817d79a4bd111bd10b34dbc96e64a8
- affected>= 5000d37042a61ca556fde2782ca40dbfa802ea16 and < 0e0c5b3cf374ebf3c589741751e1fbc67f53ec2f
- affected>= 5000d37042a61ca556fde2782ca40dbfa802ea16 and < 5b12de6229d662864ee22c11d4876652b40120f0
- affected>= 5000d37042a61ca556fde2782ca40dbfa802ea16 and < 2a4d9e2234c3f817bb0ddbc8680d09ce9be84f93
- affected>= 5000d37042a61ca556fde2782ca40dbfa802ea16 and < ec9f66c91bffdb69d309bae6dfb387562db7ebc8
- affected>= 5000d37042a61ca556fde2782ca40dbfa802ea16 and < 07ae600bd353b22f31a8f1007269744fafc7f123
- affected>= 5000d37042a61ca556fde2782ca40dbfa802ea16 and < 731712403ddb39d1a76a11abf339a0615bc85de7
- affected5.15
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.