CVE-2019-14871 json
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 ma…
published 2020-03-18 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-5986
- cvss
- 6.5
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 63%
- public exploits
- 0
- none known
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).
Patch / fix
- newlib_project newlib 3.3.0
- newlib Debian 14, Debian 13, Debian 12 3.3.0-1
- picolibc Debian 14, Debian 13, Debian 12 1.4.3-1
debian advisories DEBIAN-CVE-2019-14871
Exploit prediction
1.02% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- census-labs.com https://census-labs.com/news/2020/01/31/multiple-null-pointer-dereference-vulnerabilities-in-newlib/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
Affected products
- Red Hat newlib
Classification
- Weakness
-
- CWE-476 NULL Pointer Dereference
References
-
census-labs.com
/news/2020/01/31/multiple-null-pointer-dereference-vulnerabilities-in-newlib/
exploit, third-party-advisory
Sources
- CVE List CVE-2019-14871
- NVD CVE-2019-14871
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.