VDB
RHSA-2026:85939
RHSA-2026:85939
PUBLISHED
CVSS 7 HIGH
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.
Risk Scores
CVSS 3.1
7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | gvfs-goa-debuginfo-0:1.48.1-6.el9_6.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-mtp-0:1.48.1-6.el9_6.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-mtp-0:1.48.1-6.el9_6.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-0:1.48.1-6.el9_6.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-0:1.48.1-6.el9_6.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-mtp-debuginfo-0:1.48.1-6.el9_6.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-smb-0:1.48.1-6.el9_6.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-devel-0:1.48.1-6.el9_6.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-client-0:1.48.1-6.el9_6.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-0:1.48.1-6.el9_6.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-fuse-0:1.48.1-6.el9_6.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-debugsource-0:1.48.1-6.el9_6.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-smb-debuginfo-0:1.48.1-6.el9_6.1.i686 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-debugsource-0:1.48.1-6.el9_6.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-debuginfo-0:1.48.1-6.el9_6.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-fuse-debuginfo-0:1.48.1-6.el9_6.1.i686 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-fuse-0:1.48.1-6.el9_6.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-smb-0:1.48.1-6.el9_6.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-debuginfo-0:1.48.1-6.el9_6.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6) | 1.48.1-6.el9 |
| Red Hat | gvfs-0:1.48.1-6.el9_6.1.i686 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6) | 1.48.1-6.el9 |
…and 64 more
Timeline
- Oct 20, 2026 CVE Published
- Oct 21, 2026 CVE Updated
- Oct 21, 2026 Distribution Patch
- Oct 21, 2026 Distribution Patch
- Oct 21, 2026 Security Advisory
- Oct 21, 2026 Security Advisory
- Oct 21, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:85939 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2526485 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2531456 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_85939.json advisory
- https://access.redhat.com/security/cve/CVE-2026-84268 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-84268 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-84268 advisory
- https://gitlab.gnome.org/GNOME/gvfs/-/issues/862 advisory
- https://access.redhat.com/security/cve/CVE-2026-88924 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-88924 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-88924 advisory
- https://gitlab.gnome.org/GNOME/gvfs/-/issues/875 advisory