CVE-2026-93205
In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu-v3: Manage teardown with devm arm_smmu_device_remove() manually frees the IOPF queue, destroys the vmid_map and disables the device, while the IRQs and queues are devm managed. devm unwinds only after remove() returns, so the cleanup runs in the wrong order. The IOPF queue is freed before the event-queue IRQ whose handler uses it. Manage all of it with devm so the unwind order is correct. Free the IOPF queue and vmid_map via devm actions, and disable the device from one registered after arm_smmu_device_reset(). This is also a prerequisite for fixing a Tegra241 CMDQV CMD_SYNC use-after-free in the subsequent patch.
Affected versions
Linux kernel versions
5.14
and later are affected. Fixed in
6.12.109,
6.18.50,
7.2.4,
7.3-rc1
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-93205?
CVE-2026-93205 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.14 onward and has been patched in 6.12.109, 6.18.50, 7.2.4 and others. CVE-2026-93205 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-93205?
Yes. CVE-2026-93205 has been patched. Fixed versions include 6.12.109, 6.18.50, 7.2.4 and others. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-93205 actively exploited?
No. CVE-2026-93205 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.