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| author | Colin Ian King <colin.king@canonical.com> | 2021-08-04 16:09:51 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-22 11:47:53 +0200 |
| commit | 518d8c3c34fa443821440fa6cdd8a62e58f70693 (patch) | |
| tree | 64ffb71aaa8c882de813d0555b4706842ede2ad5 /net | |
| parent | 23beb85d910f96ee5c7c8011fa8fb27a78ab80b7 (diff) | |
| download | linux-stable-518d8c3c34fa443821440fa6cdd8a62e58f70693.tar.gz linux-stable-518d8c3c34fa443821440fa6cdd8a62e58f70693.tar.bz2 linux-stable-518d8c3c34fa443821440fa6cdd8a62e58f70693.zip | |
Bluetooth: increase BTNAMSIZ to 21 chars to fix potential buffer overflow
[ Upstream commit 713baf3dae8f45dc8ada4ed2f5fdcbf94a5c274d ]
An earlier commit replaced using batostr to using %pMR sprintf for the
construction of session->name. Static analysis detected that this new
method can use a total of 21 characters (including the trailing '\0')
so we need to increase the BTNAMSIZ from 18 to 21 to fix potential
buffer overflows.
Addresses-Coverity: ("Out-of-bounds write")
Fixes: fcb73338ed53 ("Bluetooth: Use %pMR in sprintf/seq_printf instead of batostr")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/cmtp/cmtp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/bluetooth/cmtp/cmtp.h b/net/bluetooth/cmtp/cmtp.h index c32638dddbf9..f6b9dc4e408f 100644 --- a/net/bluetooth/cmtp/cmtp.h +++ b/net/bluetooth/cmtp/cmtp.h @@ -26,7 +26,7 @@ #include <linux/types.h> #include <net/bluetooth/bluetooth.h> -#define BTNAMSIZ 18 +#define BTNAMSIZ 21 /* CMTP ioctl defines */ #define CMTPCONNADD _IOW('C', 200, int) |