[Bug 384776] [NEW] pmcd buffer overflows in cpu_name in pmda_linux.so on quadcore cpu in jaunty
Samuel Kleiner
sysadmin at picsearch.com
Mon Jun 8 11:54:45 UTC 2009
Public bug reported:
Binary package hint: pcp
Steps to reproduce
1. apt-get install pcp (version 2.7.8-20081205 is installed on jaunty)
2. /etc/init.d/pcp start
3. more /var/log/pcp/pmcd/pmcd.log
Expected result:
No backtrace
Actual result:
*** buffer overflow detected ***: /usr/lib/pcp/bin/pmcd terminated
======= Backtrace: =========
/lib/libc.so.6(__fortify_fail+0x37)[0x7f8737b8a2c7]
/lib/libc.so.6[0x7f8737b88170]
/lib/libc.so.6[0x7f8737b8882b]
/var/lib/pcp/pmdas/linux/pmda_linux.so(cpu_name+0x1d9)[0x7f873746ae69]
/var/lib/pcp/pmdas/linux/pmda_linux.so(refresh_proc_stat+0x870)[0x7f8737464180]
/var/lib/pcp/pmdas/linux/pmda_linux.so[0x7f873745f5b2]
/var/lib/pcp/pmdas/linux/pmda_linux.so(linux_init+0x21b)[0x7f873745fa7b]
/usr/lib/pcp/bin/pmcd[0x408e84]
/usr/lib/pcp/bin/pmcd(ParseInitAgents+0x6ad)[0x40981d]
/usr/lib/pcp/bin/pmcd(main+0xa23)[0x405f13]
/lib/libc.so.6(__libc_start_main+0xe6)[0x7f8737aa95a6]
/usr/lib/pcp/bin/pmcd[0x4046a9]
======= Memory map: ========
00400000-00414000 r-xp 00000000 08:06 137882307 /usr/lib/pcp/bin/pmcd
00613000-00614000 r--p 00013000 08:06 137882307 /usr/lib/pcp/bin/pmcd
00614000-00615000 rw-p 00014000 08:06 137882307 /usr/lib/pcp/bin/pmcd
00615000-00616000 rw-p 00615000 00:00 0
01ed6000-01ef7000 rw-p 01ed6000 00:00 0 [heap]
7f8737025000-7f873703b000 r-xp 00000000 08:06 463 /lib/libgcc_s.so.1
7f873703b000-7f873723b000 ---p 00016000 08:06 463 /lib/libgcc_s.so.1
7f873723b000-7f873723c000 r--p 00016000 08:06 463 /lib/libgcc_s.so.1
7f873723c000-7f873723d000 rw-p 00017000 08:06 463 /lib/libgcc_s.so.1
7f873723d000-7f8737254000 r-xp 00000000 08:06 2481 /lib/libpthread-2.9.so
7f8737254000-7f8737453000 ---p 00017000 08:06 2481 /lib/libpthread-2.9.so
7f8737453000-7f8737454000 r--p 00016000 08:06 2481 /lib/libpthread-2.9.so
7f8737454000-7f8737455000 rw-p 00017000 08:06 2481 /lib/libpthread-2.9.so
7f8737455000-7f8737459000 rw-p 7f8737455000 00:00 0
7f8737459000-7f8737470000 r-xp 00000000 08:06 2141686 /var/lib/pcp/pmdas/linux/pmda_linux.so
7f8737470000-7f8737670000 ---p 00017000 08:06 2141686 /var/lib/pcp/pmdas/linux/pmda_linux.so
7f8737670000-7f8737671000 r--p 00017000 08:06 2141686 /var/lib/pcp/pmdas/linux/pmda_linux.so
7f8737671000-7f8737677000 rw-p 00018000 08:06 2141686 /var/lib/pcp/pmdas/linux/pmda_linux.so
7f8737677000-7f8737679000 rw-p 7f8737677000 00:00 0
7f8737679000-7f8737683000 r-xp 00000000 08:06 404155733 /usr/lib/libpcp_pmda.so.3
7f8737683000-7f8737882000 ---p 0000a000 08:06 404155733 /usr/lib/libpcp_pmda.so.3
7f8737882000-7f8737883000 r--p 00009000 08:06 404155733 /usr/lib/libpcp_pmda.so.3
7f8737883000-7f8737884000 rw-p 0000a000 08:06 404155733 /usr/lib/libpcp_pmda.so.3
7f8737884000-7f8737885000 rw-p 7f8737884000 00:00 0
7f8737885000-7f873788a000 r-xp 00000000 08:06 404149258 /var/lib/pcp/pmdas/pmcd/pmda_pmcd.so
7f873788a000-7f8737a89000 ---p 00005000 08:06 404149258 /var/lib/pcp/pmdas/pmcd/pmda_pmcd.so
7f8737a89000-7f8737a8a000 r--p 00004000 08:06 404149258 /var/lib/pcp/pmdas/pmcd/pmda_pmcd.so
7f8737a8a000-7f8737a8b000 rw-p 00005000 08:06 404149258 /var/lib/pcp/pmdas/pmcd/pmda_pmcd.so
7f8737a8b000-7f8737bf3000 r-xp 00000000 08:06 650 /lib/libc-2.9.so
7f8737bf3000-7f8737df3000 ---p 00168000 08:06 650 /lib/libc-2.9.so
7f8737df3000-7f8737df7000 r--p 00168000 08:06 650 /lib/libc-2.9.so
7f8737df7000-7f8737df8000 rw-p 0016c000 08:06 650 /lib/libc-2.9.so
7f8737df8000-7f8737dfd000 rw-p 7f8737df8000 00:00 0
7f8737dfd000-7f8737dff000 r-xp 00000000 08:06 653 /lib/libdl-2.9.so
7f8737dff000-7f8737fff000 ---p 00002000 08:06 653 /lib/libdl-2.9.so
7f8737fff000-7f8738000000 r--p 00002000 08:06 653 /lib/libdl-2.9.so
7f8738000000-7f8738001000 rw-p 00003000 08:06 653 /lib/libdl-2.9.so
7f8738001000-7f8738037000 r-xp 00000000 08:06 404150714 /usr/lib/libpcp.so.3
7f8738037000-7f8738237000 ---p 00036000 08:06 404150714 /usr/lib/libpcp.so.3
7f8738237000-7f8738238000 r--p 00036000 08:06 404150714 /usr/lib/libpcp.so.3
7f8738238000-7f8738239000 rw-p 00037000 08:06 404150714 /usr/lib/libpcp.so.3
7f8738239000-7f873823b000 rw-p 7f8738239000 00:00 0
7f873823b000-7f873825b000 r-xp 00000000 08:06 644 /lib/ld-2.9.so
7f8738438000-7f873844b000 r--p 00000000 08:06 2141685 /var/lib/pcp/pmdas/linux/help.pag
7f873844b000-7f873844d000 r--p 00000000 08:06 2141684 /var/lib/pcp/pmdas/linux/help.dir
7f873844d000-7f873844f000 rw-p 7f873844d000 00:00 0
7f8738450000-7f8738455000 r--p 00000000 08:06 404149260 /var/lib/pcp/pmdas/pmcd/help.pag
7f8738455000-7f8738456000 r--p 00000000 08:06 404149259 /var/lib/pcp/pmdas/pmcd/help.dir
7f8738456000-7f873845a000 rw-p 7f8738456000 00:00 0
7f873845a000-7f873845b000 r--p 0001f000 08:06 644 /lib/ld-2.9.so
7f873845b000-7f873845c000 rw-p 00020000 08:06 644 /lib/ld-2.9.so
7fff40446000-7fff4045b000 rw-p 7ffffffea000 00:00 0 [stack]
7fff405fe000-7fff405ff000 r-xp 7fff405fe000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
If pmda_linux.so is commented out of /etc/pmcd/pmcd.conf it works.
Tested on Xeon Q9550 and Q5140, fails on both.
** Affects: pcp (Ubuntu)
Importance: Undecided
Status: New
--
pmcd buffer overflows in cpu_name in pmda_linux.so on quadcore cpu in jaunty
https://bugs.launchpad.net/bugs/384776
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