Dear SL developers,
I have recently installed the package ypserv.x86_64, version 2.19-18.el6,
from repo. @sl/6.0. The same version is in the sl 6.1 repo.
When executing the command /usr/lib64/yp/mknetid , a segmentation fault
occurs.
Here there is some info:
[root@acuari ~]# /usr/lib64/yp/mknetid
Segmentation fault
[root@acuari ~]# strace /usr/lib64/yp/mknetid
execve("/usr/lib64/yp/mknetid", ["/usr/lib64/yp/mknetid"], [/* 30 vars */])
= 0
brk(0) = 0x2564000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f1d03292000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or
directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=71138, ...}) = 0
mmap(NULL, 71138, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f1d03280000
close(3) = 0
open("/lib64/libnsl.so.1", O_RDONLY) = 3
read(3,
"\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360?\340\3607\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=116136, ...}) = 0
mmap(0x37f0e00000, 2198192, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE,
3, 0) = 0x37f0e00000
mprotect(0x37f0e16000, 2093056, PROT_NONE) = 0
mmap(0x37f1015000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x37f1015000
mmap(0x37f1017000, 6832, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x37f1017000
close(3) = 0
open("/lib64/libc.so.6", O_RDONLY) = 3
read(3,
"\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260\355\241\3437\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1904312, ...}) = 0
mmap(0x37e3a00000, 3729576, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE,
3, 0) = 0x37e3a00000
mprotect(0x37e3b86000, 2093056, PROT_NONE) = 0
mmap(0x37e3d85000, 20480, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x185000) = 0x37e3d85000
mmap(0x37e3d8a000, 18600, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x37e3d8a000
close(3) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f1d0327f000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f1d0327e000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f1d0327d000
arch_prctl(ARCH_SET_FS, 0x7f1d0327e700) = 0
mprotect(0x37f1015000, 4096, PROT_READ) = 0
mprotect(0x37e3d85000, 16384, PROT_READ) = 0
mprotect(0x37e341f000, 4096, PROT_READ) = 0
munmap(0x7f1d03280000, 71138) = 0
uname({sys="Linux", node="acuari", ...}) = 0
brk(0) = 0x2564000
brk(0x2585000) = 0x2585000
open("/etc/passwd", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=3739, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f1d03291000
read(3, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 3739
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
Segmentation fault
dmesg output:
mknetid[22013]: segfault at 0 ip 00000037e3a371e2 sp 00007fff19e13c80 error
4 in libc-2.12.so[37e3a00000+186000]
It's an ugly problem and seems a simple out of bounds reading...
Is it possible to solve the problem?
Thank you,
great work with SL 6.1
