CVE-2026-93205iommu/arm-smmu-v3: Manage teardown with devm
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 395ad89d11fd93f79a6b942e91fc409807a63c4b before 981686f4137760a16a03c5193f11d85133533f93; from 395ad89d11fd93f79a6b942e91fc409807a63c4b before 2235eafda9b3df9295efd0593cd4a8977440c3f6; 395ad89d11fd93f79a6b942e91fc409807a63c4b builds before 78fd5a2d65f3546cb4285f8e52f445baecbd00e0; 395ad89d11fd93f79a6b942e91fc409807a63c4b builds before 2bd22a0d40503a65d243b011de146603c8ce1cbc | CNA record |
References
- https://git.kernel.org/stable/c/981686f4137760a16a03c5193f11d85133533f93
- https://git.kernel.org/stable/c/2235eafda9b3df9295efd0593cd4a8977440c3f6
- https://git.kernel.org/stable/c/78fd5a2d65f3546cb4285f8e52f445baecbd00e0
- https://git.kernel.org/stable/c/2bd22a0d40503a65d243b011de146603c8ce1cbc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.