جزئیات آسیب‌پذیری
CVE-2026-88924
Gvfs: gvfs-admin socket ownership race permits local root
شرح رسمی (انگلیسی)
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.
امتیازهای CVSS
| امتیاز | نسخه | منبع | بردار |
|---|---|---|---|
| 7.0بالا | 3.1 | CVEProject cvelistV5 (CNA) (redhat) | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
محصولات آسیب‌پذیر
| فروشنده | محصول | نسخه‌ها | منبع |
|---|---|---|---|
| GNOME | gvfs | 1.48.1 ≤ v < 1.62.0 | CVEProject cvelistV5 (CNA) |
| GNOME | gvfs | 1.48.1 ≤ v < 1.60.3 | CVEProject cvelistV5 (CNA) |
| GNOME | gvfs | 1.48.1 ≤ v < 1.58.5 | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux 6 | همه | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux 7 | همه | CVEProject cvelistV5 (CNA) |
منابع و راهنماها
۹- https://access.redhat.com/errata/RHSA-2026:73998 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:74370 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:85939 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:85941 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:85942 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:85944 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-88924 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2531456 issue-trackingx_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/gvfs/-/issues/875
اطلاعات
- تاریخ انتشار
- ۱۴۰۵/۰۶/۱۹
- آخرین به‌روزرسانی
- ۱۴۰۵/۰۸/۱۴
- وضعیت
- منتشرشده
- صادرکننده (CNA)
- redhat
پیش‌بینی بهره‌برداری (EPSS)
ارزیابی SSVC (CISA)
- قابل خودکارسازی
- خیر
- وضعیت بهره‌برداری
- اثبات مفهوم
- اثر فنی
- کامل
ضعف‌ها (CWE)
- CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition