Description
A flaw was found in the admin backend of gvfs. The privileged gvfsd-admin daemon changes the ownership of newly created private D-Bus sockets by calling the link-following chown() function on a pathname inside a user-controlled directory. A local attacker can exploit this via a Time-of-Check Time-of-Use (TOCTOU) race condition and exchange the socket pathname with a symbolic link pointing to an arbitrary root-owned file (such as /etc/pam.d/su). The daemon subsequently follows the symlink and changes the ownership of the targeted root-owned file to the attacker's user ID. This allows an authenticated local attacker to modify critical system files, leading to a full local privilege escalation to root.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GNOME | gvfs | 1.48.1 – < 1.62.0, 1.48.1 – < 1.60.3, 1.48.1 – < 1.58.5 | 1.62.0 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | gvfs | 1.62.0-1 | — |
| Debian 13 | gvfs | No fix yet | — |
| Debian 12 | gvfs | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | gvfs | 1.60.0-1ubuntu0.1 | USN-8845-1 |
| Ubuntu 24.04 LTS | gvfs | 1.54.4-0ubuntu1~24.04.4 | USN-8845-1 |
| Ubuntu 22.04 LTS | gvfs | 1.48.2-0ubuntu1.2 | USN-8845-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | gvfs | 1.44.1-1ubuntu1.2+esm1 | USN-8845-1 |
| Ubuntu Pro 18.04 LTS | gvfs | 1.36.1-0ubuntu1.3.3+esm1 | USN-8845-1 |
| Ubuntu Pro 16.04 LTS | gvfs | 1.28.2-1ubuntu1~16.04.3+esm1 | USN-8845-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | gvfs +6 | 1.54.4-4.el10_2.1 | RHSA-2026:73998 |
| RHEL 9 | gvfs +7 | 1.48.1-8.el9_8.1 | RHSA-2026:74370 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | gvfs +6 | 1.54.4-4.el10_2.1 | ALSA-2026:73998 |
| AlmaLinux 9 | gvfs +7 | 1.48.1-8.el9_8.1 | ALSA-2026:74370 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | gvfs | 1.54.4-4.el10_2.1 | RLSA-2026:98623, RLSA-2026:73998 |
| Rocky Linux 10 | gvfs-goa +5 | 1.54.4-5.el10_3.1 | RLSA-2026:98623 |
| Rocky Linux 9 | gvfs | 1.48.1-8.el9_8.1 | RLSA-2026:98513, RLSA-2026:74370 |
| Rocky Linux 9 | gvfs-goa +6 | 1.48.1-9.el9_9.1 | RLSA-2026:98513 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | gvfs | 1.52.2-150600.3.12.1 | SUSE-SU-2026:5065-1 |
| SLES 15 SP6 | gvfs | 1.52.2-150600.3.12.1 | SUSE-SU-2026:5065-1 |
| SLES 15 SP5 | gvfs | 1.48.2-150400.4.18.1 | SUSE-SU-2026:5080-1 |
| SLES 15 SP4 | gvfs | 1.48.2-150400.4.18.1 | SUSE-SU-2026:5080-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | gvfs | 1.59.90-160000.4.1 | SUSE-SU-2026:24466-1 |
| SLES for SAP 15 SP6 | gvfs | 1.52.2-150600.3.12.1 | SUSE-SU-2026:5065-1 |
| SLES for SAP 15 SP5 | gvfs | 1.48.2-150400.4.18.1 | SUSE-SU-2026:5080-1 |
| SLES for SAP 15 SP4 | gvfs | 1.48.2-150400.4.18.1 | SUSE-SU-2026:5080-1 |
| SLES 16.0 | gvfs | 1.59.90-160000.4.1 | SUSE-SU-2026:24466-1 |
| SLE HPC 15 SP5 | gvfs | 1.48.2-150400.4.18.1 | SUSE-SU-2026:5080-1 |
| SLE HPC 15 SP4 | gvfs | 1.48.2-150400.4.18.1 | SUSE-SU-2026:5080-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gvfs | 1.60.3-1.1 | openSUSE-SU-2026:11788-1 |
| openSUSE Leap 16.0 | gvfs | 1.59.90-160000.4.1 | openSUSE-SU-2026:22174-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | gvfs +6 | 1.56.1-1.amzn2023.0.3 | ALAS2023-2026-3120 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | gvfs +6 | 1.54.4-4.el10_2.1 | ELSA-2026-73998 |
| Oracle Linux 9 | gvfs +7 | 1.48.1-8.el9_8.1 | ELSA-2026-74370 |
Advisories 18
- RLSA-2026:98623 Important: gvfs security update Rocky Linux Security Advisories · Nov 13, 2026
- RLSA-2026:98513 Important: gvfs security update Rocky Linux Security Advisories · Nov 13, 2026
- WID-SEC-2026-3692 Red Hat Enterprise Linux (gvfs): Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- SUSE-SU-2026:24466-1 Security update for gvfs SUSE / openSUSE Security Updates · Nov 4, 2026
- SUSE-SU-2026:5065-1 Security update for gvfs SUSE / openSUSE Security Updates · Nov 3, 2026
- SUSE-SU-2026:5080-1 Security update for gvfs SUSE / openSUSE Security Updates · Nov 3, 2026
- openSUSE-SU-2026:22174-1 Security update for gvfs SUSE / openSUSE Security Updates · Nov 1, 2026
- ALSA-2026:74370 Important: gvfs security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:73998 Important: gvfs security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:74370 Red Hat Security Advisory: gvfs security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:73998 Red Hat Security Advisory: gvfs security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RLSA-2026:74370 Important: gvfs security update Rocky Linux Security Advisories · Oct 2, 2026
- RLSA-2026:73998 Important: gvfs security update Rocky Linux Security Advisories · Oct 1, 2026
- USN-8845-1 gvfs vulnerabilities Ubuntu Security Notices (USN) · Oct 1, 2026
- ELSA-2026-74370 Important: gvfs security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Oct 1, 2026
- ELSA-2026-73998 Important: gvfs security update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Oct 1, 2026
- ALAS2023-2026-3120 Important: gvfs security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 28, 2026
- openSUSE-SU-2026:11788-1 gvfs-1.60.3-1.1 on GA media SUSE / openSUSE Security Updates · Sep 16, 2026
References
- RHSA-2026:73998 vendor-advisory
- RHSA-2026:74370 vendor-advisory
- RHSA-2026:85939 vendor-advisory
- RHSA-2026:85941 vendor-advisory
- RHSA-2026:85942 vendor-advisory
- RHSA-2026:85944 vendor-advisory
- RHSA-2026:98513 vendor-advisory
- RHSA-2026:98623 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-88924 vdb-entry
- RHBZ#2531456 issue-tracking
- https://gitlab.gnome.org/GNOME/gvfs/-/issues/875