| Name | CVE-2018-20796 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| glibc (PTS) | jessie, jessie (lts) | 2.19-18+deb8u12 | vulnerable |
| stretch (security) | 2.24-11+deb9u1 | vulnerable |
| stretch (lts), stretch | 2.24-11+deb9u5 | vulnerable |
| buster | 2.28-10+deb10u1 | vulnerable |
| buster (security) | 2.28-10+deb10u2 | vulnerable |
| bullseye | 2.31-13+deb11u8 | vulnerable |
| bullseye (security) | 2.31-13+deb11u9 | vulnerable |
| bookworm | 2.36-9+deb12u4 | vulnerable |
| bookworm (security) | 2.36-9+deb12u6 | vulnerable |
| sid, trixie | 2.37-18 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| eglibc | source | (unstable) | (unfixed) | unimportant | | |
| glibc | source | (unstable) | (unfixed) | unimportant | | |
Notes
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34141
https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00108.html
No treated as vulnerability: https://sourceware.org/glibc/wiki/Security%20Exceptions