CVE-2026-93205 (GCVE-0-2026-93205)

Vulnerability from cvelistv5 – Published: 2026-09-24 15:10 – Updated: 2026-09-25 12:42
VLAI
Title
iommu/arm-smmu-v3: Manage teardown with devm
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 395ad89d11fd93f79a6b942e91fc409807a63c4b , < 981686f4137760a16a03c5193f11d85133533f93 (git)
Affected: 395ad89d11fd93f79a6b942e91fc409807a63c4b , < 2235eafda9b3df9295efd0593cd4a8977440c3f6 (git)
Affected: 395ad89d11fd93f79a6b942e91fc409807a63c4b , < 78fd5a2d65f3546cb4285f8e52f445baecbd00e0 (git)
Affected: 395ad89d11fd93f79a6b942e91fc409807a63c4b , < 2bd22a0d40503a65d243b011de146603c8ce1cbc (git)
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Linux Linux Affected: 5.14
Unaffected: 0 , < 5.14 (semver)
Unaffected: 6.12.109 , ≤ 6.12.* (semver)
Unaffected: 6.18.50 , ≤ 6.18.* (semver)
Unaffected: 7.2.4 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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}



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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.