CVE-2020-10029: canonical ubuntu_linux Out-of-bounds Write
Vulnerability summary
CVE-2020-10029 is a medium (CVSS 5.5) Out-of-bounds Write vulnerability in canonical ubuntu_linux. EPSS estimates a 0.76% chance of exploitation in the next 30 days, higher than 55.4% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 9 · Related 3Timeline
- 04-03-2020PublishedVulnerability first disclosed.
- 14-10-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.76%
Chance of exploitation in the next 30 days
Percentile
55%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.76% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (sourceware.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Suse13 products
- glibc&distro=HPE Helion OpenStack 8< 2.22-113.4
- glibc&distro=SUSE Enterprise Storage 5< 2.22-113.4
- glibc&distro=SUSE Linux Enterprise Module for Basesystem 15 SP1< 2.26-13.39.1
- glibc&distro=SUSE Linux Enterprise Module for Development Tools 15 SP1< 2.26-13.39.1
- glibc&distro=SUSE Linux Enterprise Server 12 SP2-BCL< 2.22-113.4
Netapp6 products
Opensuse3 products
- leapEOL15.1
- glibc-testsuite-src&distro=openSUSE Leap 15.1< 2.26-lp151.19.3.1
- glibc&distro=openSUSE Leap 15.1< 2.26-lp151.19.3.1
Debian2 products
- glibc< 2.30-1
- debian_linuxEOL10.0
Ubuntu2 products
- eglibcAll versions (No fix recorded)
- glibc< 2.23-0ubuntu11.2 | < 2.27-3ubuntu1.2
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 19.10
Fedoraproject1 product
- fedoraEOL30 | 31 | 32
Gnu1 product
- glibc< 2.32.0
8 vendors · 29 products
References
28 links- lists.opensuse.org/opensuse-security-announce/2020-03/msg00033.htmlVendor AdvisoryMailing ListThird Party Advisory
- security.netapp.com/advisory/ntap-20200327-0003/Third Party Advisory
- lists.fedoraproject.org/archives/…Vendor Advisory
- lists.fedoraproject.org/archives/…Vendor Advisory
- lists.fedoraproject.org/archives/…Vendor Advisory
Show all 28 references
- lists.opensuse.org/archives/…Advisory
