CVE-2026-91786CWE-125

CVE-2026-91786

Medium · published September 15, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
2.5
In the wild
Unconfirmed
What it is

A flaw was found in GNOME Shell. When processing icons from a remote search provider via D-Bus, the system fails to validate the icon's declared dimensions against the actual data buffer size. A malicious or compromised remote search provider could exploit this by providing oversized icon dimensions, leading to an out-of-bounds read. This can cause the GNOME Shell process to crash, disrupting the user's session, and potentially disclose sensitive information from adjacent memory.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00131 · 2.5th percentile
Weakness
CWE-125 · Out-of-bounds Read
Published
2026-09-15T15:17Z
References (3)
https://access.redhat.com/security/cve/CVE-2026-91786 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2533606 · [email protected]https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/9365 · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 11:00Z
    Gnome-shell: gnome-shell: out-of-bounds read in remote search icon rendering due to unvalidated icon-data buffer size
    cvelistv5