A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause read_reply() to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing the operation to write past the intended boundaries. This issue allows a malicious server to corrupt adjacent heap memory in the gvfsd-sftp process, resulting in a denial of service as the process aborts upon detecting the heap corruption or potentially allowing arbitrary code execution.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
To mitigate this vulnerability, do not connect to untrusted SFTP servers.
References
History
Tue, 01 Sep 2026 22:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in the SFTP backend in gvfs. When mounting a share and reading a file, a malicious SFTP server can cause read_reply() to process a length that exceeds the size requested by the client. The function does not verify the server-provided length against the allocated buffer size, causing the operation to write past the intended boundaries. This issue allows a malicious server to corrupt adjacent heap memory in the gvfsd-sftp process, resulting in a denial of service as the process aborts upon detecting the heap corruption or potentially allowing arbitrary code execution. | |
| Title | Gvfs: sftp: heap-based buffer overflow in read_reply() | |
| First Time appeared |
Redhat
Redhat enterprise Linux |
|
| Weaknesses | CWE-122 | |
| CPEs | cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
|
| Vendors & Products |
Redhat
Redhat enterprise Linux |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-09-01T18:05:13.707Z
Reserved: 2026-09-01T14:05:54.144Z
Link: CVE-2026-84268
No data.
Status : Awaiting Analysis
Published: 2026-09-01T16:17:37.563
Modified: 2026-09-01T21:03:04.987
Link: CVE-2026-84268
No data.
OpenCVE Enrichment
No data.
Weaknesses