Heap out-of-bounds read in GNOME libgxps path parsing
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · High
- Fix status
- Deferred Red Hat: fix deferred
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.
Summary
GNOME libgxps through 0.3.2 contains a heap out-of-bounds read (CWE-125) in path_geometry_start_element(). An attacker supplies a crafted XPS document with a point count not divisible by three or two, and consumers such as Evince can crash or render adjacent heap memory into output.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
GNOME libgxps through 0.3.2 contains a heap out-of-bounds read in path_geometry_start_element() that allows attackers to read past allocations via crafted PolyBezierSegment or PolyQuadraticBezierSegment Points attributes. Attackers can supply a point count not divisible by three or two in a crafted XPS document to crash consumers like Evince and render adjacent heap memory into output.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for libgxps. Red Hat rates the issue Moderate and lists Red Hat Enterprise Linux 7, 8, 9 and 10 as affected with no plan available.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-16 Threatist record created from CVE-2026-111132
- 2026-10-16 Priority changed: MEDIUM → LOW
- 2026-10-16 Affected versions changed · Red Hat
- 2026-10-16 CVSS score added · Red Hat
- 2026-10-16 CISA SSVC decision points changed
References
Other 4
- https://hackmd.io/@haind-pwn/libgxps-poly-segment-points-arity-oob-read
- https://gitlab.gnome.org/GNOME/libgxps/-/blob/f5027ed09c767e8a02e652fbc77dcea79e19e10d/libgxps/gxps-path.c#L776-L785
- https://gitlab.gnome.org/GNOME/libgxps/-/blob/f5027ed09c767e8a02e652fbc77dcea79e19e10d/libgxps/gxps-path.c#L832-L848
- https://gitlab.gnome.org/GNOME/libgxps
More GNOME vulnerabilities
- TI-2023-23091 Gnome-maps: gnome maps is vulnerable to a code injection attack (similar to xss) via its service.json CVSS 3.1CRITICAL 9.8
- TI-2026-41775 Glib: off-by-one error in glib/gkeyfile.c via "g_key_file_get_locale_string_list" CVSS 3.1HIGH 8.6
- TI-2026-41772 Glib: out-of-bounds read in glib/gdatetime.c:g_date_time_get_ymd via invalid gdatetime CVSS 3.1HIGH 7.5
- TI-2026-03716 Libsoup: libsoup: denial of service via use-after-free in http/2 server CVSS 3.1HIGH 7.5
- TI-2024-28393 Integer overflow in GNOME G Structured File Library CVSS 3.1HIGH 8.4
- TI-2024-24253 Integer overflow in GNOME G Structured File Library CVSS 3.1HIGH 8.4
Sources
- CVE-2026-111132 · CVE Program
- CVE-2026-111132 · NVD
- FIRST EPSS
- CVE-2026-111132 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences