Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: tp_meter: avoid use of uninit sender vars batadv_tp_recv_ack() and batadv_tp_stop() are only valid for tp_vars in the BATADV_TP_SENDER role. When called with a BATADV_TP_RECEIVER role, it proceeds to read sender-only members that were never initialized, leading to undefined behavior. This can be triggered when a node that is currently acting as a receiver in an ongoing tp_meter session receives a malicious ACK packet. Guard against this by checking tp_vars->role immediately after the lookup and bailing out if it is not BATADV_TP_SENDER, before any of those members are accessed.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Linux / Linux33a3bb4a3345bb511f9c69c913da95d4693e2a4e – 0e388af04b3958b178a1b979527f93eb46ea1fee
- Linux / Linux33a3bb4a3345bb511f9c69c913da95d4693e2a4e – 1a21c055f66e78973712a4a1be2a554f1ee2e4f4
- Linux / Linux33a3bb4a3345bb511f9c69c913da95d4693e2a4e – 9884c9c02d3c90e9215db3c5128f59045d20ae91
- Linux / Linux33a3bb4a3345bb511f9c69c913da95d4693e2a4e – 53f931e0146ae5bdab4cba302646827d06b3794b
- Linux / Linux33a3bb4a3345bb511f9c69c913da95d4693e2a4e – ecdaa3e4d91040206afe21bc8a0d1198a0971ff3
- Linux / Linux33a3bb4a3345bb511f9c69c913da95d4693e2a4e – dc2ae5fbd2dadc26735092f140b246841d969a11
- Linux / Linux33a3bb4a3345bb511f9c69c913da95d4693e2a4e – 85397e48afe6be83ffca5ad3f4792296bfc81d3d
- Linux / Linux33a3bb4a3345bb511f9c69c913da95d4693e2a4e – 6c65cf23d4c6170fcf5714c32aa64689718cb142
- Linux / Linux4.8 – 4.8
- Linux / Linux0 – 4.8
- Linux / Linux5.10.258 – 5.10.*
- Linux / Linux5.15.209 – 5.15.*
- Linux / Linux6.1.175 – 6.1.*
- Linux / Linux6.6.142 – 6.6.*
- Linux / Linux6.12.92 – 6.12.*
- Linux / Linux6.18.34 – 6.18.*
- Linux / Linux7.0.11 – 7.0.*
- Linux / Linux7.1 – *
References
- MISChttps://git.kernel.org/stable/c/0e388af04b3958b178a1b979527f93eb46ea1fee
- MISChttps://git.kernel.org/stable/c/1a21c055f66e78973712a4a1be2a554f1ee2e4f4
- MISChttps://git.kernel.org/stable/c/9884c9c02d3c90e9215db3c5128f59045d20ae91
- MISChttps://git.kernel.org/stable/c/53f931e0146ae5bdab4cba302646827d06b3794b
- MISChttps://git.kernel.org/stable/c/ecdaa3e4d91040206afe21bc8a0d1198a0971ff3
- MISChttps://git.kernel.org/stable/c/dc2ae5fbd2dadc26735092f140b246841d969a11
- MISChttps://git.kernel.org/stable/c/85397e48afe6be83ffca5ad3f4792296bfc81d3d
- MISChttps://git.kernel.org/stable/c/6c65cf23d4c6170fcf5714c32aa64689718cb142