CVE-2019-14874 json
In the __i2b function of the newlib libc library, all versions prior to 3.3.0 (see newlib/libc/stdlib/mprec.c), Balloc is used to allocate…
published 2020-03-19 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-5989
- cvss
- 6.5
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
Summary
In the __i2b function of the newlib libc library, all versions prior to 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. The access of _ x[0] will trigger a null pointer dereference bug in case of a memory allocation failure.
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-2019-14874
Exploit prediction
1.49% chance of exploitation in the next 30 days, higher than 74% 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-2019-14874
- NVD CVE-2019-14874
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