From: Florian Weimer Date: Tue, 29 Mar 2016 09:27:32 +0000 (+0200) Subject: nss_db: Propagate ERANGE error if parse_line fails [BZ #19837] X-Git-Tag: glibc-2.24~447 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a6033052d08027f745867e5e346852da1959226c;p=thirdparty%2Fglibc.git nss_db: Propagate ERANGE error if parse_line fails [BZ #19837] Reproducer (needs to run as root): perl -e \ 'print "large:x:999:" . join(",", map {"user$_"} (1 .. 135))."\n"' \ >> /etc/group cd /var/db make getent -s db group After the fix, the last command should list the "large" group. The magic number 135 has been chosen so that the line is shorter than 1024 bytes, but the pointers required to encode the member array will cross the threshold, triggering the bug. --- diff --git a/ChangeLog b/ChangeLog index ad5d881ba74..ce6f8a22042 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2016-03-29 Florian Weimer + + [BZ #19837] + * nss/nss_db/db-XXX.c (_nss_db_getENTNAME_r): Propagate ERANGE + error if parse_line fails. + 2016-03-28 H.J. Lu * sysdeps/x86/cpu-features.h (bit_cpu_ERMS): New. diff --git a/nss/nss_db/db-XXX.c b/nss/nss_db/db-XXX.c index 03c18d70de6..125a5e9b126 100644 --- a/nss/nss_db/db-XXX.c +++ b/nss/nss_db/db-XXX.c @@ -288,8 +288,8 @@ CONCAT(_nss_db_get,ENTNAME_r) (struct STRUCTURE *result, char *buffer, } if (err < 0) { - H_ERRNO_SET (HOST_NOT_FOUND); - status = NSS_STATUS_NOTFOUND; + H_ERRNO_SET (NETDB_INTERNAL); + status = NSS_STATUS_TRYAGAIN; break; }