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[Bug nss/19837] nss_db: No retries for some long lines with a larger buffer
- From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Sat, 12 Nov 2016 06:39:36 +0000
- Subject: [Bug nss/19837] nss_db: No retries for some long lines with a larger buffer
- Auto-submitted: auto-generated
- References: <bug-19837-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=19837
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4152ba3d8f58278b187101cf6508aa279bd00083
commit 4152ba3d8f58278b187101cf6508aa279bd00083
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Mar 29 11:27:32 2016 +0200
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.
(cherry picked from commit a6033052d08027f745867e5e346852da1959226c)
(cherry picked from commit 28a87e027450b66faf1a431fc62779297c760e29)
-----------------------------------------------------------------------
Summary of changes:
nss/nss_db/db-XXX.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
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