Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| GNOME / gvfs | affected 0 before 1.60.2 |
| Red Hat / Red Hat Enterprise Linux 10 | unaffected 0:1.54.4-4.el10_2.1 before * |
| Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Support | unaffected 0:1.54.4-2.el10_0.2 before * |
| Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Support | unaffected 0:1.36.2-7.el7_9.1 before * |
| Red Hat / Red Hat Enterprise Linux 8 | unaffected 0:1.36.2-22.el8_10 before * |
| Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | unaffected 0:1.36.2-11.el8_4.1 before * |
| Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | unaffected 0:1.36.2-11.el8_4.1 before * |
| Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | unaffected 0:1.36.2-11.el8_6.1 before * |
| Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | unaffected 0:1.36.2-11.el8_6.1 before * |
| Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Service | unaffected 0:1.36.2-14.el8_8.1 before * |
| Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | unaffected 0:1.36.2-14.el8_8.1 before * |
| Red Hat / Red Hat Enterprise Linux 9 | unaffected 0:1.48.1-8.el9_8.1 before * |
| Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | unaffected 0:1.48.1-4.el9_2.1 before * |
| Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | unaffected 0:1.48.1-4.el9_4.1 before * |
| Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Support | unaffected 0:1.48.1-6.el9_6.1 before * |
| Red Hat / Red Hat Enterprise Linux 6 | unknown |
CWE
CWE-122
References
- https://access.redhat.com/errata/RHSA-2026:73997
- https://access.redhat.com/errata/RHSA-2026:73998
- https://access.redhat.com/errata/RHSA-2026:74370
- https://access.redhat.com/errata/RHSA-2026:85939
- https://access.redhat.com/errata/RHSA-2026:85940
- https://access.redhat.com/errata/RHSA-2026:85941
- https://access.redhat.com/errata/RHSA-2026:85942
- https://access.redhat.com/errata/RHSA-2026:85943
- https://access.redhat.com/errata/RHSA-2026:85944
- https://access.redhat.com/errata/RHSA-2026:85945
- https://access.redhat.com/errata/RHSA-2026:86606
- https://access.redhat.com/security/cve/CVE-2026-84268
- https://bugzilla.redhat.com/show_bug.cgi?id=2526485
- https://gitlab.gnome.org/GNOME/gvfs/-/issues/862
ADP enrichment
No English description supplied.
No references supplied.