From 0bf056904b95fa555c36eb0cfbcee9c015747f59 Mon Sep 17 00:00:00 2001 From: Karsten Keil Date: Fri, 25 Jan 2008 13:42:23 +0100 Subject: [PATCH] fix oops on rmmod capidrv patch eb36f4fc019835cecf0788907f6cab774508087b in mainline. 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 Signed-off-by: Greg Kroah-Hartman --- 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 23b6f7bc16b7e..f65b7f9d3f434 100644 --- a/drivers/isdn/capi/capidrv.c +++ b/drivers/isdn/capi/capidrv.c @@ -2306,13 +2306,14 @@ 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, " ??? "); } -- 2.47.2