CVE-2026-93205 Affecting perf6.18-debuginfo package, versions <1:6.18.51-120.162.amzn2023
Threat Intelligence
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Test your applications- Snyk IDSNYK-AMZN2023-PERF618DEBUGINFO-20856071
- published13 Oct 2026
- disclosed24 Sept 2026
Introduced: 24 Sep 2026
NewCVE-2026-93205 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2023 perf6.18-debuginfo to version 1:6.18.51-120.162.amzn2023 or higher.
This issue was patched in ALAS2023-2026-3187.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf6.18-debuginfo package and not the perf6.18-debuginfo package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.
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.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-93205
- https://git.kernel.org/stable/c/2235eafda9b3df9295efd0593cd4a8977440c3f6
- https://git.kernel.org/stable/c/2bd22a0d40503a65d243b011de146603c8ce1cbc
- https://git.kernel.org/stable/c/78fd5a2d65f3546cb4285f8e52f445baecbd00e0
- https://git.kernel.org/stable/c/981686f4137760a16a03c5193f11d85133533f93