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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2009-03-26 15:24:16 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-03-26 15:24:16 +0100 |
| commit | 94cbc203bee4ea87bd49ad56f6c5381bc10d8b6b (patch) | |
| tree | 0ca9d98b1137056d783b25bf8a5d1f69b2ff7a47 /drivers/s390/cio/blacklist.c | |
| parent | e909074bb91773680c0b2e49ea8af9f85c6f59bd (diff) | |
| download | op-kernel-dev-94cbc203bee4ea87bd49ad56f6c5381bc10d8b6b.zip op-kernel-dev-94cbc203bee4ea87bd49ad56f6c5381bc10d8b6b.tar.gz | |
[S390] cio: fix wrong buffer access in cio_ignore_write
Writing only spaces to /proc/cio_ignore will cause a buffer overflow
since the size_t value i will not become negative and so buf[-1UL] is
accessed. Change the value of i to ssize_t.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/blacklist.c')
| -rw-r--r-- | drivers/s390/cio/blacklist.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c index fe00be3..6565f02 100644 --- a/drivers/s390/cio/blacklist.c +++ b/drivers/s390/cio/blacklist.c @@ -336,8 +336,7 @@ cio_ignore_write(struct file *file, const char __user *user_buf, size_t user_len, loff_t *offset) { char *buf; - size_t i; - ssize_t rc, ret; + ssize_t rc, ret, i; if (*offset) return -EINVAL; |
