CVE-2026-84268 - Gvfs: sftp: heap-based buffer overflow in read_reply()
Brief
CVE ID : CVE-2026-84268
Published : Sept. 1, 2026, 4:17 p. m.
- 59 minutes ago
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.
Severity: 8.8
- HIGH
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