From eb36f4fc019835cecf0788907f6cab774508087b Mon Sep 17 00:00:00 2001 From: Karsten Keil Date: Fri, 25 Jan 2008 11:55:28 +0100 Subject: [PATCH] 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 Acked-by: Karsten Keil Signed-off-by: Linus Torvalds --- drivers/isdn/capi/capidrv.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/isdn/capi/capidrv.c b/drivers/isdn/capi/capidrv.c index 48c1775ef5..cb42b690b4 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, " ??? "); } -- 2.39.5