** DISPUTED ** 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 '(|)(\1\1)*' in grep, a different issue than CVE-2018-20796. NOTE: the software maintainer disputes that this is a vulnerability because the behavior occurs only with a crafted pattern.

References

• https://nvd.nist.gov/vuln/detail/CVE-2019-9192
• https://sourceware.org/bugzilla/show_bug.cgi?id=24269
• https://support.f5.com/csp/article/K26346590?utm_source=f5support&utm_medium=RSS
• https://support.f5.com/csp/article/K26346590?utm_source=f5support&amp%3Butm_medium=RSS