From a6033052d08027f745867e5e346852da1959226c Mon Sep 17 00:00:00 2001 From: Florian Weimer Date: Tue, 29 Mar 2016 11:27:32 +0200 Subject: [PATCH] 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. --- ChangeLog | 6 ++++++ nss/nss_db/db-XXX.c | 4 ++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/ChangeLog b/ChangeLog index ad5d881ba7..ce6f8a2204 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 03c18d70de..125a5e9b12 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; }