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CVE-2026-84268

8.8 Élevée

Publiée le 01/09/2026 à 18:17 · Modifiée le 21/10/2026 à 08:16 · En attente d'analyse NVD · Source : secalert@redhat.com

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.

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Produits concernés

Scores CVSS

VersionScoreSourceVecteur
3.1 8.8 Élevée secalert@redhat.com CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Faiblesses (CWE)

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