CVE-2018-20796
CVSS v3
7.5
HIGH
EPSS Score
5.8 %
exploit probability, as of 2026-10-19
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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Affected and fixed versions
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
- CVE-2018-20796 Red Hat Product Security
glibc: uncontrolled recursion in function check_dst_limits_calc_pos_1 in posix/regexec.c
Description
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.
Technical details
- Published
- 2019-02-26
Frequently asked questions
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