CVE-2026-84268
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Błąd w gvfs SFTP umożliwia zdalne wykonanie kodu lub powoduje awarię usługi.
CVSS
8.8
EPSS
0.4%
Exploit
none
Vendor
Opis źródłowy (NVD)
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.
dos rce
Brak patcha
Źródła i daty
| Źródło | Wartość |
|---|---|
| NVD – CVSS | 8.8 |
| CISA KEV (aktywnie wykorzystywane) | Nie |
| FIRST EPSS (prawdopodobieństwo exploita) | 0.4% |
| Opublikowano (NVD) | 2026-09-01 16:17:37 UTC |
| Ostatnia modyfikacja (NVD) | 2026-10-01 17:17:32 UTC |
Referencje
- https://access.redhat.com/errata/RHSA-2026:73997 ([email protected])
- https://access.redhat.com/errata/RHSA-2026:73998 ([email protected])
- https://access.redhat.com/errata/RHSA-2026:74370 ([email protected])
- https://access.redhat.com/security/cve/CVE-2026-84268 ([email protected])
- https://bugzilla.redhat.com/show_bug.cgi?id=2526485 ([email protected])
- https://gitlab.gnome.org/GNOME/gvfs/-/issues/862 ([email protected])