Bug 1162457 – VUL-1: CVE-2019-14876: newlib: __lshift null pointer dereference bug

Bug 1162457 - (CVE-2019-14876) VUL-1: CVE-2019-14876: newlib: __lshift null pointer dereference bug

(CVE-2019-14876)
Summary:	VUL-1: CVE-2019-14876: newlib: __lshift null pointer dereference bug

Status:	RESOLVED FIXED

Classification:	openSUSE
Product:	openSUSE Distribution
Classification:	openSUSE
Component:	Basesystem
Version:	Leap 15.1
Hardware:	Other Other

Priority:	P4 - Low Severity: Minor (vote)
Target Milestone:	---
Assigned To:	Richard Biener
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/252251/
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Reported:	2020-02-03 07:37 UTC by Alexander Bergmann
Modified:	2023-03-08 12:23 UTC (History)
CC List:	0 users

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Found By:	Security Response Team
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Description Alexander Bergmann 2020-02-03 07:37:37 UTC

https://census-labs.com/news/2020/01/31/multiple-null-pointer-dereference-vulnerabilities-in-newlib/

__lshift null pointer dereference bug (CVE-2019-14876)

In the __lshift function of the newlib libc library (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: 


References:
https://seclists.org/oss-sec/2020/q1/51

Comment 1 Richard Biener 2023-03-08 12:23:31 UTC

We meanwhile have newlib 4.1.0 and never shipped newlib on any SLE product.