libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in demangle_const, as demonstrated by nm-new.
Priority LOW 27CWE-674Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-674.
Summary
libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in demangle_const, as demonstrated by nm-new.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00953 61st percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:gnu:gcc:11.2:*:*:*:*:*:*:* | 11.2 | Vulnerable | GNU |
| cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* | 36 | Vulnerable | Fedoraproject |
- cpe:2.3:a:gnu:gcc:11.2:*:*:*:*:*:*:* Versions 11.2 Vulnerable ·GNU
- cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* Versions 36 Vulnerable ·Fedoraproject
Remediation
No fixed version listed by the sources yet.
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: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | — |
Not affected: 2 products
- Red Hat OpenShift AI (RHOAI)
- Red Hat Virtualization 4
Timeline
- 2026-10-02 Threatist record created from CVE-2022-27943
- 2026-10-03 Alias added: GHSA-xcrq-6rjw-5chw
- 2026-10-08 CVSS score added · CISA ADP
- 2026-10-08 Weakness changed · CISA ADP
- 2026-10-08 CISA SSVC decision points changed
- 2026-11-06 Affected versions changed · Red Hat
References
Sources
- CVE-2022-27943 · CVE Program
- CVE-2022-27943 · NVD
- FIRST EPSS
- GHSA-xcrq-6rjw-5chw · GitHub Advisory Database · CC BY 4.0
- CVE-2022-27943 · 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