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CVE-2026-88924

Gvfs: gvfs-admin socket ownership race permits local root PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
GNOME / gvfsaffected 1.48.1 before 1.62.0; affected 1.48.1 before 1.60.3; affected 1.48.1 before 1.58.5
Red Hat / Red Hat Enterprise Linux 10unaffected 0:1.54.4-4.el10_2.1 before *
Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Supportunaffected 0:1.54.4-2.el10_0.2 before *
Red Hat / Red Hat Enterprise Linux 9unaffected 0:1.48.1-8.el9_8.1 before *
Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutionsunaffected 0:1.48.1-4.el9_2.1 before *
Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutionsunaffected 0:1.48.1-4.el9_4.1 before *
Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Supportunaffected 0:1.48.1-6.el9_6.1 before *
Red Hat / Red Hat Enterprise Linux 6affected
Red Hat / Red Hat Enterprise Linux 7affected
Red Hat / Red Hat Enterprise Linux 8unaffected

CWE

CWE-367

References

ADP enrichment

CISA-ADP

No English description supplied.