CVE-2020-10029

Name: CVE-2020-10029
Creator: NVD / NIST
Published: 2020-03-04T15:15:13.083+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.76%

Last modified Jun 17, 2026

CVE-2020-10029 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. The GNU C Library (aka glibc or libc6) before 2.32 could overflow an on-stack buffer during range reduction if an input to an 80-bit long double function contains a non-canonical bit pattern, a seen when passing a 0x5d414141414141410000 value to sinl on x86 targets. This is related to sysdeps/ieee754/ldbl-96/e_rem_pio2l.c.. EPSS estimates a 0.76% chance of exploitation in the next 30 days.

Description

The GNU C Library (aka glibc or libc6) before 2.32 could overflow an on-stack buffer during range reduction if an input to an 80-bit long double function contains a non-canonical bit pattern, a seen when passing a 0x5d414141414141410000 value to sinl on x86 targets. This is related to sysdeps/ieee754/ldbl-96/e_rem_pio2l.c.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.76%

50.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Gnu	Glibc	< 2.32.0
Fedoraproject	Fedora	30
Fedoraproject	Fedora	31
Fedoraproject	Fedora	32
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.10
Opensuse	Leap	15.1
Netapp	Active Iq Unified Manager	All versions
Netapp	Cloud Backup	All versions
Netapp	Hci Management Node	All versions
Netapp	Solidfire	All versions
Netapp	Steelstore Cloud Integrated Storage	All versions
Netapp	H410c Firmware	All versions
Debian	Debian Linux	10.0

References

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00033.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/23N76M3EDP2GIW4GOIQRYTKRE7PPBRB2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JZTFUD5VH2GU3YOXA2KBQSBIDZRDWNZ3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VU5JJGENOK7K4X5RYAA5PL647C6HD22E/
https://security.gentoo.org/glsa/202006-04Third Party Advisory
https://security.netapp.com/advisory/ntap-20200327-0003/Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=25487Exploit, Issue Tracking, Third Party Advisory
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commit%3Bh=9333498794cde1d5cca518badf79533a24114b6f
https://usn.ubuntu.com/4416-1/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00033.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/23N76M3EDP2GIW4GOIQRYTKRE7PPBRB2/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JZTFUD5VH2GU3YOXA2KBQSBIDZRDWNZ3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VU5JJGENOK7K4X5RYAA5PL647C6HD22E/
https://security.gentoo.org/glsa/202006-04Third Party Advisory
https://security.netapp.com/advisory/ntap-20200327-0003/Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=25487Exploit, Issue Tracking, Third Party Advisory
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commit%3Bh=9333498794cde1d5cca518badf79533a24114b6f
https://usn.ubuntu.com/4416-1/Third Party Advisory

Timeline

Published: Mar 4, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10029?

How severe is CVE-2020-10029?

CVE-2020-10029 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.76% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10029?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-10029?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST