NULL pointer dereference in Red Hat newlib
Priority LOW 32CWE-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
In the __multadd function of the newlib libc library, prior to versions 3.3.0 (see newlib/libc/stdlib/mprec.c), Balloc is used to allocate a big integer, however no check is performed to verify if the allocation succeeded or not. This will trigger a null pointer dereference bug in case of a memory allocation failure.
Why it matters now
EPSS 0.01455 73rd 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-2019-14873
- 2026-10-03 Alias added: GHSA-457x-v5jv-rvr7
References
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Sources
- CVE-2019-14873 · CVE Program
- CVE-2019-14873 · NVD
- FIRST EPSS
- GHSA-457x-v5jv-rvr7 · GitHub Advisory Database · CC BY 4.0
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