Gvariant deserialisation does not match spec for non-normal data
Priority MEDIUM 58CWE-400Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service, Code execution
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 4 fixed, 3 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-400 and CWE-502.
Summary
A flaw was found in GLib. GVariant deserialization is vulnerable to an exponential blowup issue where a crafted GVariant can cause excessive processing, leading to denial of service.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00392 33rd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 4 fixed, 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | glib2 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | No fix listed | CNA |
| Fedora | Fedora 38 | — | — | No fix listed | CNA |
| Fedora | Extra Packages for Enterprise Linux | — | — | No fix listed | CNA |
| Fedora | Fedora | — | — | No fix listed | CNA |
| Fedora | Fedora 37 | — | — | No fix listed | CNA |
| Fedora | Fedora 38 | — | — | No fix listed | CNA |
| Fedora | Fedora 37 | — | — | No fix listed | CNA |
- glib2 Vendor— Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Fedora 38 VendorFedora Affected — Fixed in — No fix listed CNA
- Extra Packages for Enterprise Linux VendorFedora Affected — Fixed in — No fix listed CNA
- Fedora VendorFedora Affected — Fixed in — No fix listed CNA
- Fedora 37 VendorFedora Affected — Fixed in — No fix listed CNA
- Fedora 38 VendorFedora Affected — Fixed in — No fix listed CNA
- Fedora 37 VendorFedora Affected — Fixed in — No fix listed CNA
Remediation
Red Hat 2 advisories
- RHSA-2024:2528 Released 2024-04-30 · Red Hat rating Lowmingw-glib2 security update
- Red Hat Enterprise Linux CRB (v. 9) mingw-glib2-2.78.0-1.el9, mingw32-glib2-2.78.0-1.el9, mingw32-glib2-static-2.78.0-1.el9 +2
- RHSA-2023:6631 Released 2023-11-07 · Red Hat rating Lowglib2 security and bug fix update
- Red Hat CodeReady Linux Builder (v. 9) glib2-static-2.68.4-11.el9
- Red Hat Enterprise Linux AppStream (v. 9) glib2-devel-2.68.4-11.el9, glib2-doc-2.68.4-11.el9, glib2-tests-2.68.4-11.el9
- Red Hat Enterprise Linux BaseOS (v. 9) glib2-2.68.4-11.el9
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 8 | Affected | No fix yet |
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2023:6631 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2023:6631 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2023:6631 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:2528 |
Timeline
- 2026-10-02 Threatist record created from CVE-2023-32665
- 2026-10-03 Alias added: GHSA-c9xj-rf55-c64g
References
More Red Hat vulnerabilities
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Sources
- CVE-2023-32665 · CVE Program
- CVE-2023-32665 · NVD
- FIRST EPSS
- GHSA-c9xj-rf55-c64g · GitHub Advisory Database · CC BY 4.0
- CVE-2023-32665 · 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