CVE catalog
CVE-2026-91786
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 malic
- Severity
- Medium · CVSS 6.1
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.13% · Oct 25, 2026
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.
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 | gnome-shell | sid | 51.0-3 | fixed |
| Debian | gnome-shell | forky | 50.5-1 | fixed |
| Debian | gnome-shell | trixie | 48.7-0+deb13u2 | vulnerable |
| Debian | gnome-shell | bookworm | 43.9-0+deb12u2 | vulnerable |
| Debian | gnome-shell | bookworm-security | 43.9-0+deb12u2 | vulnerable |
| Suse | gnome-shell | linux enterprise server 16.0 | 48.4-160000.2.1 | fixed |
| Suse | gnome-shell | linux enterprise server for sap applications 16.0 | 48.4-160000.2.1 | fixed |
| Opensuse | gnome-shell | leap 16.0 | 48.4-160000.2.1 | fixed |
| Suse | gnome-shell | linux enterprise module for desktop applications 15 sp7 | 45.3-150700.11.6.1 | fixed |
| Suse | gnome-shell | linux enterprise workstation extension 15 sp7 | 45.3-150700.11.6.1 | fixed |
| Suse | gnome-shell | linux enterprise server ltss extended security 12 sp5 | 3.20.4-77.31.2 | fixed |
| Ubuntu | gnome-shell | pro | 3.16.4-0ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | pro | 3.18.1-1ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | pro | 3.18.2-0ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | pro | 3.18.2-0ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | pro | 3.18.3-3ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | pro | 3.18.4-0ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | pro | 3.18.4-0ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | pro | 3.18.4-0ubuntu3 | vulnerable |
| Ubuntu | gnome-shell | pro | 3.18.5-0ubuntu0.1 | vulnerable |
| Ubuntu | gnome-shell | pro | 3.18.5-0ubuntu0.2 | vulnerable |
| Ubuntu | gnome-shell | pro | 3.18.5-0ubuntu0.3 | vulnerable |
| Ubuntu | gnome-shell | pro | 3.18.5-0ubuntu0.3+esm1 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.26.1-0ubuntu4 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.26.1-0ubuntu5 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.26.1-0ubuntu6 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.26.2-0ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.26.2-0ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.26.2-0ubuntu3 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.27.91-0ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.27.92-0ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.0-0ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.0-0ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.0-0ubuntu3 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.0-0ubuntu4 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.0-0ubuntu5 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.1-0ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.1-0ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.2-0ubuntu0.18.04.1 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.3-0ubuntu0.18.04.2 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.3-0ubuntu0.18.04.3 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.3-0ubuntu0.18.04.4 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.3+git20190124-0ubuntu18.04.1 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.3+git20190124-0ubuntu18.04.2 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.4-0ubuntu18.04.1 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.4-0ubuntu18.04.2 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.4-0ubuntu18.04.3 | vulnerable |
| Ubuntu | gnome-shell | 18.04 | 3.28.4-0ubuntu18.04.7 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.34.1-1ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.34.1+git20191024-1ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.34.3-1ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.35.91-1ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.0-2ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.0-2ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.1-4ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.1-5ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.1-5ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.2-1ubuntu1~20.04.1 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.3-1ubuntu1~20.04.2 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.4-1ubuntu1~20.04.1 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.4-1ubuntu1~20.04.2 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.7-0ubuntu0.20.04.1 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.9-0ubuntu0.20.04.1 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.9-0ubuntu0.20.04.2 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.9-0ubuntu0.20.04.3 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.9-0ubuntu0.20.04.4 | vulnerable |
| Ubuntu | gnome-shell | 20.04 | 3.36.9-0ubuntu0.20.04.5 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 40.5-1ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 41.3-1ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 42~beta-1ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 42~beta-1ubuntu3 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 42.0-1ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 42.0-2ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 42.1-0ubuntu0.1 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 42.2-0ubuntu0.2 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 42.4-0ubuntu0.22.04.1 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 42.5-0ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 42.9-0ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 42.9-0ubuntu2.1 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 42.9-0ubuntu2.2 | vulnerable |
| Ubuntu | gnome-shell | 22.04 | 42.9-0ubuntu2.3 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 45.0-1ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 45.1-1ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 45.2-1ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 45.3-1ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu3.1 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu4 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu5 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu5.1 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.1 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.3 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.4 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.5 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.6 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.8 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.9 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.11 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.12 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.13 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.14 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.15 | vulnerable |
| Ubuntu | gnome-shell | 24.04 | 46.0-0ubuntu6~24.04.16 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 49.0-1ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 49.1-5ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 49.2-1ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 49.2-1ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 50~beta-0ubuntu3 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 50.0-0ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 50.0-1ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 50.0-1ubuntu2 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 50.0-1ubuntu3 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 50.1-0ubuntu1 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 50.1-0ubuntu1.1 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 50.1-0ubuntu1.2 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 50.1-0ubuntu1.3 | vulnerable |
| Ubuntu | gnome-shell | 26.04 | 50.1-0ubuntu1.4 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | gnome-shell | source | sid | 50.5-1 | unimportant | Not reported | [1148176] |
| Debian | gnome-shell | source | forky | 50.5-1 | unimportant | Not reported | [1148176] |
| Debian | gnome-shell | source | trixie | (unfixed) | unimportant | Not reported | [1148176] |
| Debian | gnome-shell | source | bookworm | (unfixed) | unimportant | Not reported | [1148176] |
| Suse | gnome-shell | rpm | linux enterprise server 16.0 | 48.4-160000.2.1 | Not reported | SUSE-SU-2026:23950-1 | Not reported |
| Suse | gnome-shell | rpm | linux enterprise server for sap applications 16.0 | 48.4-160000.2.1 | Not reported | SUSE-SU-2026:23950-1 | Not reported |
| Opensuse | gnome-shell | rpm | leap 16.0 | 48.4-160000.2.1 | Not reported | OPENSUSE-SU-2026:21976-1 | Not reported |
| Suse | gnome-shell | rpm | linux enterprise module for desktop applications 15 sp7 | 45.3-150700.11.6.1 | Not reported | SUSE-SU-2026:4373-1 | Not reported |
| Suse | gnome-shell | rpm | linux enterprise workstation extension 15 sp7 | 45.3-150700.11.6.1 | Not reported | SUSE-SU-2026:4373-1 | Not reported |
| Suse | gnome-shell | rpm | linux enterprise server ltss extended security 12 sp5 | 3.20.4-77.31.2 | Not reported | SUSE-SU-2026:4350-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [gnome-shell]Affected
Details (4)
43.9-0+deb12u2· amd64 · bookwormAffected
nvd · gnome-shell · debian · bookworm; nvd · gnome-shell · debian · 12
43.9-0+deb12u2· arm64 · bookwormAffected
nvd · gnome-shell · debian · bookworm; nvd · gnome-shell · debian · 12
43.9-0+deb12u2· amd64 · bookworm-securityAffected
nvd · gnome-shell · debian · bookworm; nvd · gnome-shell · debian · 12
43.9-0+deb12u2· arm64 · bookworm-securityAffected
nvd · gnome-shell · debian · bookworm; nvd · gnome-shell · debian · 12
- [gnome-shell-common]Affected
Source package: [gnome-shell]
Details (4)
43.9-0+deb12u2· all · bookwormAffected
nvd · gnome-shell · debian · bookworm; nvd · gnome-shell · debian · 12
43.9-0+deb12u2· all · bookwormAffected
nvd · gnome-shell · debian · bookworm; nvd · gnome-shell · debian · 12
43.9-0+deb12u2· all · bookworm-securityAffected
nvd · gnome-shell · debian · bookworm; nvd · gnome-shell · debian · 12
43.9-0+deb12u2· all · bookworm-securityAffected
nvd · gnome-shell · debian · bookworm; nvd · gnome-shell · debian · 12
- [gnome-shell-extension-prefs]Affected
Source package: [gnome-shell]
Details (4)
43.9-0+deb12u2· amd64 · bookwormAffected
nvd · gnome-shell · debian · bookworm; nvd · gnome-shell · debian · 12
43.9-0+deb12u2· arm64 · bookwormAffected
nvd · gnome-shell · debian · bookworm; nvd · gnome-shell · debian · 12
43.9-0+deb12u2· amd64 · bookworm-securityAffected
nvd · gnome-shell · debian · bookworm; nvd · gnome-shell · debian · 12
43.9-0+deb12u2· arm64 · bookworm-securityAffected
nvd · gnome-shell · debian · bookworm; nvd · gnome-shell · debian · 12
[Debian 13 (Trixie)]
- [gnome-shell]Affected
Details (2)
48.7-0+deb13u2· amd64 · trixieAffected
nvd · gnome-shell · debian · 13
48.7-0+deb13u2· arm64 · trixieAffected
nvd · gnome-shell · debian · 13
- [gnome-shell-common]Affected
Source package: [gnome-shell]
Details (2)
48.7-0+deb13u2· all · trixieAffected
nvd · gnome-shell · debian · 13
48.7-0+deb13u2· all · trixieAffected
nvd · gnome-shell · debian · 13
- [gnome-shell-extension-prefs]Affected
Source package: [gnome-shell]
Details (2)
48.7-0+deb13u2· amd64 · trixieAffected
nvd · gnome-shell · debian · 13
48.7-0+deb13u2· arm64 · trixieAffected
nvd · gnome-shell · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_4350-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-91786]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-91786]
- [https://osv.dev/vulnerability/SUSE-SU-2026:23950-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:4350-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:4373-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-91786]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:21976-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-91786]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-91786.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]