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Prevent potential buffer overflow in reading messages from the

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kernel log rinbuffer.
This commit is contained in:
Joey Schulze
2004-04-29 13:29:03 +00:00
parent 14fb61b562
commit ce4a02cbe7
1 changed files with 4 additions and 1 deletions
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5
klogd.c
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@ -243,6 +243,9 @@
* people have submitted patches: Troels Walsted Hansen * people have submitted patches: Troels Walsted Hansen
* <troels@thule.no>, Wolfgang Oertl <Wolfgang.Oertl@uibk.ac.at> * <troels@thule.no>, Wolfgang Oertl <Wolfgang.Oertl@uibk.ac.at>
* and Thomas Roessler. * and Thomas Roessler.
* Thu Apr 29 15:24:07 2004: Solar Designer <solar@openwall.com>
* Prevent potential buffer overflow in reading messages from the
* kernel log rinbuffer.
*/ */
@ -938,7 +941,7 @@ static void LogKernelLine(void)
* messages into this fresh buffer. * messages into this fresh buffer.
*/ */
memset(log_buffer, '\0', sizeof(log_buffer)); memset(log_buffer, '\0', sizeof(log_buffer));
if ( (rdcnt = ksyslog(2, log_buffer, sizeof(log_buffer))) < 0 ) if ( (rdcnt = ksyslog(2, log_buffer, sizeof(log_buffer)-1)) < 0 )
{ {
if ( errno == EINTR ) if ( errno == EINTR )
return; return;