VulnerabilityPublished 24 Sep 2026Updated 30 Oct 2026

CVE-2026-93205: Linux kernel · iommu/arm-smmu-v3: Manage teardown with devm

Source GCVE Database

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Authoritative record:CVE-2026-93205· Medium

Not known to be exploited · fixed in 981686f4137760a16a03c5193f11d85133533f93 : update Linux kernel when convenient.

Data as of 30 Oct 2026, 16:33 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Patch: Available – fixed in 981686f4137760a16a03c5193f11d85133533f93, 2235eafda9b3df9295efd0593cd4a8977440c3f6, 78fd5a2d65f3546cb4285f8e52f445baecbd00e0 +3

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-7g45-qp7m-q8xg

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 395ad89d11fd93f79a6b942e91fc409807a63c4b, < 981686f4137760a16a03c5193f11d85133533f93	Fixed in 981686f4137760a16a03c5193f11d85133533f93
LinuxLinux	Affected ≥ 395ad89d11fd93f79a6b942e91fc409807a63c4b, < 2235eafda9b3df9295efd0593cd4a8977440c3f6	Fixed in 2235eafda9b3df9295efd0593cd4a8977440c3f6
LinuxLinux	Affected ≥ 395ad89d11fd93f79a6b942e91fc409807a63c4b, < 78fd5a2d65f3546cb4285f8e52f445baecbd00e0	Fixed in 78fd5a2d65f3546cb4285f8e52f445baecbd00e0
LinuxLinux	Affected ≥ 395ad89d11fd93f79a6b942e91fc409807a63c4b, < 64b1a9384db9cabf1bde378a2d5c1923fd67ea0d	Fixed in 64b1a9384db9cabf1bde378a2d5c1923fd67ea0d
LinuxLinux	Affected ≥ 395ad89d11fd93f79a6b942e91fc409807a63c4b, < 041b5e2a2a31c62049af30c5716099eebab86cb8	Fixed in 041b5e2a2a31c62049af30c5716099eebab86cb8
LinuxLinux	Affected ≥ 395ad89d11fd93f79a6b942e91fc409807a63c4b, < 2bd22a0d40503a65d243b011de146603c8ce1cbc	Fixed in 2bd22a0d40503a65d243b011de146603c8ce1cbc

Description

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.

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