DEBIAN-CVE-2026-84267

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Source
https://security-tracker.debian.org/tracker/CVE-2026-84267
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84267.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-84267
Upstream
Published
2026-09-01T16:17:37Z
Modified
2026-09-17T16:00:08Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

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).

References

Affected packages

Debian:12 / gvfs

Package

Name
gvfs
Purl
pkg:deb/debian/gvfs?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.50.3-1
1.50.3-1+deb12u1
1.50.4-1
1.50.4-2
1.50.4-3
1.50.6-1
1.51.90-1
1.51.91-1
1.52.0-1
1.52.1-1
1.52.2-1
1.53.90-1
1.53.90-2
1.53.90-3
1.53.90-4
1.54.0-1
1.54.0-2
1.54.0-3
1.54.0-4
1.54.1-1
1.54.2-1
1.54.2-2
1.55.90-1
1.55.90-2
1.56.0-1
1.56.0-2
1.56.1-1
1.57.1-1
1.57.2-1
1.57.2-2
1.57.2-3
1.58.0-1
1.58.0-2
1.59.1-1
1.59.90-1
1.59.90-2
1.59.90-3
1.60.0-1
1.60.0-2
1.62.0-1
1.62.0-2
1.62.0-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84267.json"

Debian:13 / gvfs

Package

Name
gvfs
Purl
pkg:deb/debian/gvfs?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.57.2-2
1.57.2-2+deb13u1
1.57.2-3
1.58.0-1
1.58.0-2
1.59.1-1
1.59.90-1
1.59.90-2
1.59.90-3
1.60.0-1
1.60.0-2
1.62.0-1
1.62.0-2
1.62.0-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84267.json"

Debian:14 / gvfs

Package

Name
gvfs
Purl
pkg:deb/debian/gvfs?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.62.0-1

Affected versions

1.*
1.57.2-2
1.57.2-3
1.58.0-1
1.58.0-2
1.59.1-1
1.59.90-1
1.59.90-2
1.59.90-3
1.60.0-1
1.60.0-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84267.json"