Messages in this thread Patch in this message | | | From | Colin King <> | Subject | [PATCH] snic: correctly check for array overrun on overly long version number | Date | Thu, 25 Feb 2016 22:58:25 +0000 |
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From: Colin Ian King <colin.king@canonical.com>
The snic version number is expected to be 4 decimals in the form like a netmask string with each number stored in an element in array v. However, there is an off-by-one check on the number of elements in v allowing one to pass a 5 decimal version number causing v[4] to be referenced, causing a buffer overrun. Fix the off-by-one error by comparing to i > 3 rather than 4.
Signed-off-by: Colin Ian King <colin.king@canonical.com> --- drivers/scsi/snic/snic_ctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/snic/snic_ctl.c b/drivers/scsi/snic/snic_ctl.c index aebe753..ab0e06b 100644 --- a/drivers/scsi/snic/snic_ctl.c +++ b/drivers/scsi/snic/snic_ctl.c @@ -75,7 +75,7 @@ snic_ver_enc(const char *s) continue; } - if (i > 4 || !isdigit(c)) + if (i > 3 || !isdigit(c)) goto end; v[i] = v[i] * 10 + (c - '0'); -- 2.7.0
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