diff options
| author | Karsten Keil <kkeil@suse.de> | 2008-01-25 11:55:28 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-25 08:26:10 -0800 |
| commit | eb36f4fc019835cecf0788907f6cab774508087b (patch) | |
| tree | b834e3213c822735006c25f0c4f6e4ed6cafc181 | |
| parent | 49914084e797530d9baaf51df9eda77babc98fa8 (diff) | |
fix oops on rmmod capidrv
Fix overwriting the stack with the version string
(it is currently 10 bytes + zero) when unloading the
capidrv module. Safeguard against overwriting it
should the version string grow in the future.
Should fix Kernel Bug Tracker Bug 9696.
Signed-off-by: Gerd v. Egidy <gerd.von.egidy@intra2net.com>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/isdn/capi/capidrv.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/isdn/capi/capidrv.c b/drivers/isdn/capi/capidrv.c index 48c1775ef5b3..cb42b690b45e 100644 --- a/drivers/isdn/capi/capidrv.c +++ b/drivers/isdn/capi/capidrv.c @@ -2332,13 +2332,14 @@ static int __init capidrv_init(void) static void __exit capidrv_exit(void) { - char rev[10]; + char rev[32]; char *p; if ((p = strchr(revision, ':')) != 0) { - strcpy(rev, p + 1); - p = strchr(rev, '$'); - *p = 0; + strncpy(rev, p + 1, sizeof(rev)); + rev[sizeof(rev)-1] = 0; + if ((p = strchr(rev, '$')) != 0) + *p = 0; } else { strcpy(rev, " ??? "); } |