| Message ID | 20210105161053.6642-1-ardb@kernel.org (mailing list archive) |
|---|---|
| State | Awaiting Upstream |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | Bluetooth: avoid u128_xor() on potentially misaligned inputs | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Guessed tree name to be net-next |
| netdev/subject_prefix | warning | Target tree name not specified in the subject |
| netdev/cc_maintainers | success | CCed 7 of 7 maintainers |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 23 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/header_inline | success | Link |
| netdev/stable | success | Stable not CCed |
Hi Ard, > u128_xor() takes pointers to quantities that are assumed to be at least > 64-bit aligned, which is not guaranteed to be the case in the smp_c1() > routine. So switch to crypto_xor() instead. > > Signed-off-by: Ard Biesheuvel <ardb@kernel.org> > --- > net/bluetooth/smp.c | 5 ++--- > 1 file changed, 2 insertions(+), 3 deletions(-) patch has been applied to bluetooth-next tree. Regards Marcel
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index c659c464f7ca..b0c1ee110eff 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -25,7 +25,6 @@ #include <linux/crypto.h> #include <crypto/aes.h> #include <crypto/algapi.h> -#include <crypto/b128ops.h> #include <crypto/hash.h> #include <crypto/kpp.h> @@ -425,7 +424,7 @@ static int smp_c1(const u8 k[16], SMP_DBG("p1 %16phN", p1); /* res = r XOR p1 */ - u128_xor((u128 *) res, (u128 *) r, (u128 *) p1); + crypto_xor_cpy(res, r, p1, sizeof(p1)); /* res = e(k, res) */ err = smp_e(k, res); @@ -442,7 +441,7 @@ static int smp_c1(const u8 k[16], SMP_DBG("p2 %16phN", p2); /* res = res XOR p2 */ - u128_xor((u128 *) res, (u128 *) res, (u128 *) p2); + crypto_xor(res, p2, sizeof(p2)); /* res = e(k, res) */ err = smp_e(k, res);
u128_xor() takes pointers to quantities that are assumed to be at least 64-bit aligned, which is not guaranteed to be the case in the smp_c1() routine. So switch to crypto_xor() instead. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> --- net/bluetooth/smp.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)