VulnerabilityPublished 19 Jul 2026Updated 6 Nov 2026

CVE-2026-53372: Linux kernel · iommu/vt-d: Block PASID attachment to nested domain with dirty tracking

Affects Linux kernelSource CVE Database V5

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Not known to be exploited · fixed in cc5bd898ff70710ffc41cd8e5c2741cb64750047 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 17:04 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

Thin evidence

One scorer or none

Exploitation: No evidence of active exploitation and no public proof of concept
Automatable: Attackers cannot reliably automate steps 1–4 of the kill chain
Technical impact: Limited control over the software or limited information exposure

CISA SSVC assessment, 2026-11-06.

Patch

Available – fixed in cc5bd898ff70710ffc41cd8e5c2741cb64750047, 9009c1af5458322469fa9a4371081a4449c5947d, 3ea9ce757bd3de955b56e7bc5672fc479e40b045

Exploitation evidence

Disclosed: evidence found.
CVE published 19 Jul 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 6 Nov 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.

What to do

Upgrade Linux kernel to cc5bd898ff70710ffc41cd8e5c2741cb64750047, 9009c1af5458322469fa9a4371081a4449c5947d or 3ea9ce757bd3de955b56e7bc5672fc479e40b045.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 67f6f56b59126b3bf4fc6f4ea564e450fcfcf9f6, < cc5bd898ff70710ffc41cd8e5c2741cb64750047	Fixed in cc5bd898ff70710ffc41cd8e5c2741cb64750047
LinuxLinux	Affected ≥ 67f6f56b59126b3bf4fc6f4ea564e450fcfcf9f6, < 9009c1af5458322469fa9a4371081a4449c5947d	Fixed in 9009c1af5458322469fa9a4371081a4449c5947d
LinuxLinux	Affected ≥ 67f6f56b59126b3bf4fc6f4ea564e450fcfcf9f6, < 3ea9ce757bd3de955b56e7bc5672fc479e40b045	Fixed in 3ea9ce757bd3de955b56e7bc5672fc479e40b045
LinuxLinux	Affected =6.13	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Block PASID attachment to nested domain with dirty tracking Kernel lacks dirty tracking support on nested domain attached to PASID, fails the attachment early if nesting parent domain is dirty tracking configured, otherwise dirty pages would be lost.

References

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