VulnerabilityPublished 4 Sep 2026Updated 21 Oct 2026

CVE-2026-80884: Linux kernel · ntb: Store original DMA address for future release

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in da6d997ac556479c112554ab5d95cbd04683eb11 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in da6d997ac556479c112554ab5d95cbd04683eb11, a4a046f668c7c7d0df9510cc426678563fff1b03, 10662aafce4acd52278c942d0a5b3993594017b9 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 4 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 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.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, 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 to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ fc5d1829f9bf3d8275322727c0e9a8baf268b7c6, < da6d997ac556479c112554ab5d95cbd04683eb11	Fixed in da6d997ac556479c112554ab5d95cbd04683eb11
LinuxLinux	Affected ≥ fc5d1829f9bf3d8275322727c0e9a8baf268b7c6, < a4a046f668c7c7d0df9510cc426678563fff1b03	Fixed in a4a046f668c7c7d0df9510cc426678563fff1b03
LinuxLinux	Affected ≥ fc5d1829f9bf3d8275322727c0e9a8baf268b7c6, < 10662aafce4acd52278c942d0a5b3993594017b9	Fixed in 10662aafce4acd52278c942d0a5b3993594017b9
LinuxLinux	Affected ≥ fc5d1829f9bf3d8275322727c0e9a8baf268b7c6, < 2b9ddb7311c79e8af2410abd97765fffd9ddf586	Fixed in 2b9ddb7311c79e8af2410abd97765fffd9ddf586
LinuxLinux	Affected ≥ fc5d1829f9bf3d8275322727c0e9a8baf268b7c6, < 0f035333e19944f8ea7a423681f161eb1b2db21c	Fixed in 0f035333e19944f8ea7a423681f161eb1b2db21c
LinuxLinux	Affected =4.20	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: ntb: Store original DMA address for future release The DMA API requires that dma_free_attrs receive the exact dma_handle originally returned by the allocation function. Do not modify it.

References

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