CVE-2018-20796: GNU Glibc

High severity, CVSS 7.5. EPSS: 5.8% chance of exploitation in the next 30 days.

In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\227|)(\\1\\1|t1|\\\2537)+' in grep.

Affected products

• GNU Glibc: up to and including 2.29
• Netapp Cloud Backup: any version
• Netapp Ontap Select Deploy Administration Utility: affected versions not specified
• Netapp Steelstore Cloud Integrated Storage: affected versions not specified

Published 2019-02-26. Last modified 2026-06-17.