Use of Uninitialized Resource Affecting gvfs-mtp package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.37% (28th percentile)

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  • Snyk IDSNYK-RHEL7-GVFSMTP-19761185
  • published13 Sept 2026
  • disclosed3 Aug 2026

Introduced: 3 Aug 2026

CVE-2026-84267  (opens in a new tab)
CWE-908  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 gvfs-mtp.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gvfs-mtp package and not the gvfs-mtp package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

A flaw was found in the SFTP backend in gvfs. When mounting a share, a malicious SFTP server can cause read_string() to allocate a buffer with a certain length but the function does not verify that the buffer is completely filled, leaving the remainder of the buffer containing uninitialized heap contents. If the server sends a short FXP_HANDLE reply, these uninitialized bytes are taken as the file handle. The client will then echo these uninitialized bytes back to the server on all subsequent requests using that handle. With a length of 128 bytes, this issue allows the malicious server to deterministically read uninitialized heap memory from the gvfsd-sftp process, leaking its heap base and the load address of the libgio library, resulting in a deterministic defeat of Address Space Layout Randomization (ASLR).

CVSS Base Scores

version 3.1