NULL pointer dereference in Red Hat newlib
Priority LOW 31CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
The REENT_CHECK macro (see newlib/libc/include/sys/reent.h) as used by REENT_CHECK_TM, REENT_CHECK_MISC, REENT_CHECK_MP and other newlib macros in versions prior to 3.3.0, does not check for memory allocation problems when the DEBUG flag is unset (as is the case in production firmware builds).
Why it matters now
EPSS 0.01016 63rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed newlib (Red Hat): 3.3.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | newlib | before 3.3.0 | 3.3.0 | Patch available | CNA |
- newlib VendorRed Hat Affected before 3.3.0 Fixed in 3.3.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:newlib_project:newlib:*:*:*:*:*:*:*:* | before 3.3.0 | Vulnerable | Newlib Project |
- cpe:2.3:a:newlib_project:newlib:*:*:*:*:*:*:*:* Versions before 3.3.0 Vulnerable ·Newlib Project
Remediation
- Fix · CNA newlib (Red Hat) Fixed in 3.3.0
Timeline
- 2026-10-02 Threatist record created from CVE-2019-14871
- 2026-10-03 Alias added: GHSA-2q4g-qm2f-cq2j
References
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Sources
- CVE-2019-14871 · CVE Program
- CVE-2019-14871 · NVD
- FIRST EPSS
- GHSA-2q4g-qm2f-cq2j · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences