In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net\/mlx5: Fix slab-out-of-bounds when handling team device events<\/p>\n
The mlx5_handle_changeupper_event() and mlx5_handle_changeinfodata_event()
\nfunctions check for LAG masters (which includes both bonding and team
\ndevices) but only call bonding-specific APIs. When processing team device
\nevents, calling bond_slave_get_rcu() and bond_is_slave_inactive() on
\nteam_port structures causes KASAN to detect an out-of-bounds memory access
\nsince team_port is smaller than bond slave.<\/p>\n
Fix this by wrapping the bond-specific API calls with a check for bonding
\ndevices. This allows the function to still process LAG events for both
\nbonding and teams but only calls bond-specific functions when dealing with
\nactual bonding devices.<\/p>\n
For mlx5_handle_changeinfodata_event(), keep the explicit bond check as
\nmlx5 doesn’t handle state information for team ports anyway.<\/p>\n
Tested with Mellanox ConnectX-5 on Linux 7.2.0-rc6:
\n– Bonding: PASS (no regressions)
\n– Team device: PASS (no KASAN errors)<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net\/mlx5: Fix slab-out-of-bounds when handling team device events<\/p>\n
The mlx5_handle_changeupper_event() and mlx5_handle_changeinfoda<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-41279","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/41279","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=41279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}