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printk: don't read beyond string arguments' terminating zero 

Fix update_console_cmdline() not to to read beyond the terminating zero of its
name argument.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Markus Armbruster 2008-04-30 00:54:52 -07:00 committed by Linus Torvalds
parent f7511d5f66
commit f735295b14
1 changed files with 1 additions and 1 deletions
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2
kernel/printk.c
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@ -921,7 +921,7 @@ int update_console_cmdline(char *name, int idx, char *name_new, int idx_new, cha
if (strcmp(console_cmdline[i].name, name) == 0 && if (strcmp(console_cmdline[i].name, name) == 0 &&
console_cmdline[i].index == idx) { console_cmdline[i].index == idx) {
c = &console_cmdline[i]; c = &console_cmdline[i];
memcpy(c->name, name_new, sizeof(c->name)); strlcpy(c->name, name_new, sizeof(c->name));
c->name[sizeof(c->name) - 1] = 0; c->name[sizeof(c->name) - 1] = 0;
c->options = options; c->options = options;
c->index = idx_new; c->index = idx_new;