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Bluetooth: Fix missing encryption refresh on Security Request
commit 64e759f58f
upstream.
If Security Request is received on connection that is already encrypted
with sufficient security master should perform encryption key refresh
procedure instead of just ignoring Slave Security Request
(Core Spec 5.0 Vol 3 Part H 2.4.6).
> ACL Data RX: Handle 3585 flags 0x02 dlen 6
SMP: Security Request (0x0b) len 1
Authentication requirement: Bonding, No MITM, SC, No Keypresses (0x09)
< HCI Command: LE Start Encryption (0x08|0x0019) plen 28
Handle: 3585
Random number: 0x0000000000000000
Encrypted diversifier: 0x0000
Long term key: 44264272a5c426a9e868f034cf0e69f3
> HCI Event: Command Status (0x0f) plen 4
LE Start Encryption (0x08|0x0019) ncmd 1
Status: Success (0x00)
> HCI Event: Encryption Key Refresh Complete (0x30) plen 3
Status: Success (0x00)
Handle: 3585
Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
cf88ae752c
commit
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1 changed files with 7 additions and 1 deletions
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@ -2287,8 +2287,14 @@ static u8 smp_cmd_security_req(struct l2cap_conn *conn, struct sk_buff *skb)
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else
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sec_level = authreq_to_seclevel(auth);
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if (smp_sufficient_security(hcon, sec_level, SMP_USE_LTK))
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if (smp_sufficient_security(hcon, sec_level, SMP_USE_LTK)) {
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/* If link is already encrypted with sufficient security we
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* still need refresh encryption as per Core Spec 5.0 Vol 3,
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* Part H 2.4.6
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*/
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smp_ltk_encrypt(conn, hcon->sec_level);
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return 0;
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}
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if (sec_level > hcon->pending_sec_level)
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hcon->pending_sec_level = sec_level;
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