CVE-2026-97983· NVD / CVE Program· CNA Linux

vduse: return compat ioctl results directly

Noroxi assessment

Priority: Monitor (action score 0/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.15% (FIRST EPSS).
Fixed version: Linux Linux 135ac58097fa5fc707bf392c5cececf59e4080c0, 48a4ee65e677559776349128e6a81a6041986c99, 7.2.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 135ac58097fa5fc707bf392c5cececf59e4080c0, 48a4ee65e677559776349128e6a81a6041986c99, 7.2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In the Linux kernel, the following vulnerability has been resolved: vduse: return compat ioctl results directly The compat handler handles VDUSE_IOTLB_GET_FD and VDUSE_VQ_GET_INFO, but then calls the native handler. Their different command sizes make native dispatch return -ENOIOCTLCMD. For GET_FD, this overwrites receive_fd()'s return value after the descriptor is installed, leaking one fd per call. Return handled compat results directly and use native dispatch only for other commands.

—No exploit Fix available

EUVD-2026-86637

Published: Sep 25, 2026
Updated: Oct 19, 2026
EPSS: 0.1% · 4th percentile
CWE: —

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 0 / 40 · —
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.1%

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Noroxi analysis

What does it mean in your environment?

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Affected systems

Is your version affected?

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Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

Linux Linux
- 7dd28904c42ee3b0728c0692dd3332c2c83e8f33, 7.2affected
- 455a2a1af92651764e9eb42cec0d95ac142afc28 and later · before 135ac58097fa5fc707bf392c5cececf59e4080c0affected · git
- 455a2a1af92651764e9eb42cec0d95ac142afc28 and later · before 48a4ee65e677559776349128e6a81a6041986c99affected · git
- 7.1.5 and later · before 7.2affected · semver
- before 7.2not affected · semver
- 7.2.7 and later · up to and including 7.2.*not affected · semver
- 7.3 and laternot affected · original_commit_for_fix

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:14	linux	before 7.2.7-1	7.2.7-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

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CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
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CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
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Published before and after this one in the same product

← EarlierCVE-2026-97981Sep 25, 2026 · net: ethernet: cortina: Count dropped frames as NAPI work
0Monitor
← EarlierCVE-2026-97982Sep 25, 2026 · net: ethernet: cortina: Fix budget accounting
0Monitor
Later →CVE-2026-97984Sep 25, 2026 · net: ipv6: Fix UDP length overflow with PMTU discover and big MTU
0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Linux Linux	135ac58097fa5fc707bf392c5cececf59e4080c0	Vendor (CNA)
Linux Linux	48a4ee65e677559776349128e6a81a6041986c99	Vendor (CNA)
Linux Linux	7.2	Vendor (CNA)
debian:linux	7.2.7-1 · Debian:14	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).