CVE-2020-10029

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 v3.1 NVD

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

CVSS v2.0 NVD

2.1 LOWAV:L/AC:L/Au:N/C:N/I:N/A:P

EPSS

0.76% chance of exploitation in the next 30 days, 55th percentile

Published

2020-03-04

Updated

2026-10-14

Proof-of-concept exploits (1)

• https://sourceware.org/bugzilla/show_bug.cgi?id=25487

Security advisories

• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00033.html
• https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html
• https://security.gentoo.org/glsa/202006-04
• https://security.netapp.com/advisory/ntap-20200327-0003
• https://usn.ubuntu.com/4416-1

References

• CVE Record
• NVD entry