Description
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix slab-out-of-bounds when handling team device events The mlx5_handle_changeupper_event() and mlx5_handle_changeinfodata_event() functions check for LAG masters (which includes both bonding and team devices) but only call bonding-specific APIs. When processing team device events, calling bond_slave_get_rcu() and bond_is_slave_inactive() on team_port structures causes KASAN to detect an out-of-bounds memory access since team_port is smaller than bond slave. Fix this by wrapping the bond-specific API calls with a check for bonding devices. This allows the function to still process LAG events for both bonding and teams but only calls bond-specific functions when dealing with actual bonding devices. For mlx5_handle_changeinfodata_event(), keep the explicit bond check as mlx5 doesn't handle state information for team ports anyway. Tested with Mellanox ConnectX-5 on Linux 7.2.0-rc6: - Bonding: PASS (no regressions) - Team device: PASS (no KASAN errors)
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
54493a08e21f46446b3b24577c5a6f229d049757 to < 16ca0e79f31ea810346a79dda545ba344ede1d47affected54493a08e21f46446b3b24577c5a6f229d049757 to < 3a6e67ff267af2053a793825c3b7844741fed461affected54493a08e21f46446b3b24577c5a6f229d049757 to < 8117cbc504cb01980258d8a8c9be8f57cf0aacebaffected54493a08e21f46446b3b24577c5a6f229d049757 to < 04c824940d52871c49866a4ac67b504146f7cf35affected
Linux Linux
Default version status: affected
5.18affected0 to < 5.18unaffected6.12.113 to ≤ 6.12.*unaffected6.18.56 to ≤ 6.18.*unaffected7.2.10 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected