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gvfs CVE-2026-84270

| EUVDEUVD-2026-69298 MEDIUM
Out-of-bounds Read (CWE-125)
2026-09-01 redhat GHSA-2rh6-86rx-p849
Buffer Overflow Denial Of Service Red Hat Enterprise Linux 10 Red Hat Enterprise Linux 6 Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 9 Red Hat Suse
4.3
CVSS 3.1 · Vendor: redhat
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Severity by source

Vendor (redhat) PRIMARY
4.3 MEDIUM
AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
vuln.today AI
4.3 MEDIUM

Physical device connection required (AV:P), user must read a file (UI:R), no system privileges needed (PR:N), and impact is daemon crash only (A:H, C:N, I:N).

3.1 AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.0 AV:P/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SUSE
6.6 MEDIUM
AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Red Hat
4.3 MEDIUM
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Metadata Corrected
Sep 01, 2026 - 16:40 vuln.today
tag: Information Disclosure removed
Analysis Generated
Sep 01, 2026 - 16:21 vuln.today

DescriptionCVE.org

A flaw was found in the MTP backend in gvfs. When reading a file from a mounted MTP device, do_read() in gvfsbackendmtp.c trusts the data length returned by the device without limiting it to the original size requested by the client. If a malicious MTP device responds with more bytes than requested, this unrestricted length is passed directly to memcpy(). This causes the operation to read memory outside the intended boundaries. This allows an attacker who plugs in a malicious MTP device to cause a segmentation fault when a file is read and crash the gvfsd-mtp process, resulting in a denial of service.

AnalysisAI

Crash of the gvfsd-mtp daemon in gvfs is achievable by anyone who can connect a malicious USB MTP device to a target Linux system. The do_read() function in gvfsbackendmtp.c accepts the byte-count reported by the device at face value and passes it uncapped to memcpy(), causing an out-of-bounds read that triggers a segmentation fault when the device deliberately over-reports its response length. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Delivery
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Exploit
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Execution
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Vulnerability AssessmentAI

Exploitation Physical access to the target machine is required to connect a malicious USB MTP device (AV:P). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 4.3 reflects the genuine constraints of this vulnerability well: AV:P requires the attacker to physically connect a rogue device, AC:L acknowledges that crafting a non-compliant MTP response is straightforward once a device is built, and UI:R captures that a user must actively read a file from the device to trigger the bug. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the vendor-supplied gvfs package update for the relevant RHEL version once released; monitor https://access.redhat.com/security/cve/CVE-2026-84270 for the specific fixed package version, which was not independently confirmed in the available data. … Detailed patch versions, workarounds, and compensating controls in full report.
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Same weakness CWE-125 – Out-of-bounds Read

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP7 Affected
SUSE Linux Enterprise Server 15 SP7 Affected
SUSE Linux Enterprise Server 16.0 Affected
SUSE Linux Enterprise Server 16.1 Affected

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CVE-2026-84270 vulnerability details – vuln.today
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