CVE catalog

CVE-2026-88924

Severity: High · CVSS 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: Sep 1, 2026, 4:17:37 PM UTC
Updated: Sep 10, 2026, 3:17:59 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.22% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	gvfs	sid	`1.62.0-3`	fixed
Debian	gvfs	forky	`1.62.0-3`	fixed
Debian	gvfs	trixie	`1.57.2-2+deb13u1`	vulnerable
Debian	gvfs	bookworm	`1.50.3-1+deb12u1`	vulnerable
Ubuntu	gvfs	noble	`1.54.4-0ubuntu1~24.04.4`	fixed
Ubuntu	gvfs-backends	noble	`1.54.4-0ubuntu1~24.04.4`	fixed
Ubuntu	gvfs-common	noble	`1.54.4-0ubuntu1~24.04.4`	fixed
Ubuntu	gvfs-daemons	noble	`1.54.4-0ubuntu1~24.04.4`	fixed
Ubuntu	gvfs-fuse	noble	`1.54.4-0ubuntu1~24.04.4`	fixed
Ubuntu	gvfs-libs	noble	`1.54.4-0ubuntu1~24.04.4`	fixed
Ubuntu	gvfs	22.04	`1.47.91-1ubuntu1`	vulnerable
Ubuntu	gvfs	22.04	`1.48.1-2ubuntu2`	vulnerable
Ubuntu	gvfs	22.04	`1.48.1-2ubuntu3`	vulnerable
Ubuntu	gvfs	22.04	`1.48.1-2ubuntu5`	vulnerable
Ubuntu	gvfs	22.04	`1.48.1-3`	vulnerable
Ubuntu	gvfs	22.04	`1.48.1-4`	vulnerable
Ubuntu	gvfs	22.04	`1.48.2-0ubuntu1`	vulnerable
Ubuntu	gvfs	22.04	`1.48.2-0ubuntu1.1`	vulnerable
Ubuntu	gvfs	22.04	`1.48.2-0ubuntu1.2`	fixed
Ubuntu	gvfs	24.04	`1.52.0-1`	vulnerable
Ubuntu	gvfs	24.04	`1.52.1-1build1`	vulnerable
Ubuntu	gvfs	24.04	`1.52.2-1`	vulnerable
Ubuntu	gvfs	24.04	`1.53.90-2`	vulnerable
Ubuntu	gvfs	24.04	`1.54.0-1build1`	vulnerable
Ubuntu	gvfs	24.04	`1.54.0-1build2`	vulnerable
Ubuntu	gvfs	24.04	`1.54.0-1build3`	vulnerable
Ubuntu	gvfs	24.04	`1.54.0-1ubuntu2`	vulnerable
Ubuntu	gvfs	24.04	`1.54.4-0ubuntu1~24.04.1`	vulnerable
Ubuntu	gvfs	24.04	`1.54.4-0ubuntu1~24.04.2`	vulnerable
Ubuntu	gvfs	24.04	`1.54.4-0ubuntu1~24.04.4`	fixed
Ubuntu	gvfs	26.04	`1.57.2-2ubuntu5`	vulnerable
Ubuntu	gvfs	26.04	`1.57.2-2ubuntu6`	vulnerable
Ubuntu	gvfs	26.04	`1.58.0-1ubuntu1`	vulnerable
Ubuntu	gvfs	26.04	`1.58.0-2`	vulnerable
Ubuntu	gvfs	26.04	`1.59.1-1`	vulnerable
Ubuntu	gvfs	26.04	`1.59.90-3`	vulnerable
Ubuntu	gvfs	26.04	`1.60.0-1`	vulnerable
Ubuntu	gvfs	26.04	`1.60.0-1ubuntu0.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	gvfs	source	sid	`1.62.0-1`	not yet assigned	Not reported	[1147399]
Debian	gvfs	source	forky	`1.62.0-1`	not yet assigned	Not reported	[1147399]
Debian	gvfs	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1147399]
Debian	gvfs	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1147399]
Ubuntu	gvfs	deb	noble	`1.54.4-0ubuntu1~24.04.4`	Not reported	Not reported	Not reported
Ubuntu	gvfs-backends	deb	noble	`1.54.4-0ubuntu1~24.04.4`	Not reported	Not reported	Not reported
Ubuntu	gvfs-common	deb	noble	`1.54.4-0ubuntu1~24.04.4`	Not reported	Not reported	Not reported
Ubuntu	gvfs-daemons	deb	noble	`1.54.4-0ubuntu1~24.04.4`	Not reported	Not reported	Not reported
Ubuntu	gvfs-fuse	deb	noble	`1.54.4-0ubuntu1~24.04.4`	Not reported	Not reported	Not reported
Ubuntu	gvfs-libs	deb	noble	`1.54.4-0ubuntu1~24.04.4`	Not reported	Not reported	Not reported
Ubuntu	gvfs	deb	22.04	`1.48.2-0ubuntu1.2`	Not reported	UBUNTU-CVE-2026-88924	Not reported
Ubuntu	gvfs	deb	24.04	`1.54.4-0ubuntu1~24.04.4`	Not reported	UBUNTU-CVE-2026-88924	Not reported
Ubuntu	gvfs	deb	26.04	`1.60.0-1ubuntu0.1`	Not reported	UBUNTU-CVE-2026-88924	Not reported

[Debian bug #1147399]

Notes

[trixie] gvfs: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[gvfs]Affected
Details (2)
- 1.50.3-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · gvfs · debian · bookworm; nvd · gvfs · debian · 12
- 1.50.3-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · gvfs · debian · bookworm; nvd · gvfs · debian · 12
[gvfs-backends]Affected
Source package: [gvfs]
Details (2)
- 1.50.3-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · gvfs · debian · bookworm; nvd · gvfs · debian · 12
- 1.50.3-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · gvfs · debian · bookworm; nvd · gvfs · debian · 12
[gvfs-common]Affected
Source package: [gvfs]
Details (2)
- 1.50.3-1+deb12u1 · all · bookworm
  Affected
  nvd · gvfs · debian · bookworm; nvd · gvfs · debian · 12
- 1.50.3-1+deb12u1 · all · bookworm
  Affected
  nvd · gvfs · debian · bookworm; nvd · gvfs · debian · 12
[gvfs-daemons]Affected
Source package: [gvfs]
Details (2)
- 1.50.3-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · gvfs · debian · bookworm; nvd · gvfs · debian · 12
- 1.50.3-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · gvfs · debian · bookworm; nvd · gvfs · debian · 12
[gvfs-fuse]Affected
Source package: [gvfs]
Details (2)
- 1.50.3-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · gvfs · debian · bookworm; nvd · gvfs · debian · 12
- 1.50.3-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · gvfs · debian · bookworm; nvd · gvfs · debian · 12
[gvfs-libs]Affected
Source package: [gvfs]
Details (2)
- 1.50.3-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · gvfs · debian · bookworm; nvd · gvfs · debian · 12
- 1.50.3-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · gvfs · debian · bookworm; nvd · gvfs · debian · 12

[Debian 13 (Trixie)]

[gvfs]Affected
Details (2)
- 1.57.2-2+deb13u1 · amd64 · trixie
  Affected
  nvd · gvfs · debian · 13
- 1.57.2-2+deb13u1 · arm64 · trixie
  Affected
  nvd · gvfs · debian · 13
[gvfs-backends]Affected
Source package: [gvfs]
Details (2)
- 1.57.2-2+deb13u1 · amd64 · trixie
  Affected
  nvd · gvfs · debian · 13
- 1.57.2-2+deb13u1 · arm64 · trixie
  Affected
  nvd · gvfs · debian · 13
[gvfs-common]Affected
Source package: [gvfs]
Details (2)
- 1.57.2-2+deb13u1 · all · trixie
  Affected
  nvd · gvfs · debian · 13
- 1.57.2-2+deb13u1 · all · trixie
  Affected
  nvd · gvfs · debian · 13
[gvfs-daemons]Affected
Source package: [gvfs]
Details (2)
- 1.57.2-2+deb13u1 · amd64 · trixie
  Affected
  nvd · gvfs · debian · 13
- 1.57.2-2+deb13u1 · arm64 · trixie
  Affected
  nvd · gvfs · debian · 13
[gvfs-fuse]Affected
Source package: [gvfs]
Details (2)
- 1.57.2-2+deb13u1 · amd64 · trixie
  Affected
  nvd · gvfs · debian · 13
- 1.57.2-2+deb13u1 · arm64 · trixie
  Affected
  nvd · gvfs · debian · 13
[gvfs-libs]Affected
Source package: [gvfs]
Details (2)
- 1.57.2-2+deb13u1 · amd64 · trixie
  Affected
  nvd · gvfs · debian · 13
- 1.57.2-2+deb13u1 · arm64 · trixie
  Affected
  nvd · gvfs · debian · 13

Observed: Oct 24, 2026, 1:06:01 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]