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CVE-2026-88924— Gvfs: gvfs-admin socket ownership race permits local root

Quick assessment

Affected
GNOME gvfs
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GNOME GVfs是GNOME基金会开源的一个虚拟文件系统。 GNOME GVfs存在竞争条件问题漏洞，该漏洞源于gvfs的admin后端中特权gvfsd-admin守护进程对用户控制目录内的路径名调用跟随链接的chown()函数，存在TOCTOU竞争条件，本地攻击者可将套接字路径名替换为指向root所有文件的符号链接，导致修改关键系统文件并提升至root权限。

CVSS 7.0 · High EPSS 0.22% · P13

Possible ATT&CK Techniques 1 AI

T1531.001

Affected Version Matrix 12

VendorProduct Version RangeStatus
GNOME gvfs 1.48.1< 1.62.0 affected
1.48.1< 1.60.3 affected
1.48.1< 1.58.5 affected
Red Hat Red Hat Enterprise Linux 10 0:1.54.4-4.el10_2.1< * unaffected
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.54.4-2.el10_0.2< * unaffected
Red Hat Red Hat Enterprise Linux 6 any affected
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 any unaffected
Red Hat Red Hat Enterprise Linux 9 0:1.48.1-8.el9_8.1< * unaffected
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.48.1-4.el9_2.1< * unaffected
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:1.48.1-4.el9_4.1< * unaffected
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:1.48.1-6.el9_6.1< * unaffected
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I. Basic Information for CVE-2026-88924

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Gvfs: gvfs-admin socket ownership race permits local root
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: CVE Program / CVE List V5
Vulnerability Title
GNOME GVfs 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNOME GVfs是GNOME基金会开源的一个虚拟文件系统。 GNOME GVfs存在竞争条件问题漏洞，该漏洞源于gvfs的admin后端中特权gvfsd-admin守护进程对用户控制目录内的路径名调用跟随链接的chown()函数，存在TOCTOU竞争条件，本地攻击者可将套接字路径名替换为指向root所有文件的符号链接，导致修改关键系统文件并提升至root权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GNOME gvfs 1.48.1 ~ 1.62.0 -
Red Hat Red Hat Enterprise Linux 10 0:1.54.4-4.el10_2.1 ~ * cpe:/o:redhat:enterprise_linux:10.2
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:1.54.4-2.el10_0.2 ~ * cpe:/o:redhat:enterprise_linux_eus:10.0
Red Hat Red Hat Enterprise Linux 9 0:1.48.1-8.el9_8.1 ~ * cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 0:1.48.1-4.el9_2.1 ~ * cpe:/a:redhat:rhel_e4s:9.2::appstream
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 0:1.48.1-4.el9_4.1 ~ * cpe:/a:redhat:rhel_e4s:9.4::appstream
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 0:1.48.1-6.el9_6.1 ~ * cpe:/a:redhat:rhel_eus:9.6::appstream
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8

II. Public POCs for CVE-2026-88924

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III. Intelligence Information for CVE-2026-88924

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Vendor Advisories for CVE-2026-88924 (9)

IV. Related Vulnerabilities

Same product: gvfs
Same vendor: GNOME
Same weakness: CWE-367