libbsd: Out-of-bounds read in nlist.c (CVE-2019-20367)

nlist.c in libbsd before 0.10.0 has an out-of-bounds read during a comparison for a symbol name from the string table (strtab).

References:

• https://lists.freedesktop.org/archives/libbsd/2019-August/000229.html
• https://nvd.nist.gov/vuln/detail/CVE-2019-20367

Patch:

https://gitlab.freedesktop.org/libbsd/libbsd/commit/9d917aad37778a9f4a96ba358415f077f3f36f3b (0.10.0)

Affected branches:

• master (fe9e411c)
• 3.13-stable (fe9e411c)
• 3.12-stable (fe9e411c)
• 3.11-stable (fe9e411c)
• 3.10-stable