In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net\/mlx5e: Fix use-after-free in mlx5e_tx_reporter_timeout_recover<\/p>\n
mlx5e_tx_reporter_timeout_recover() accesses sq->netdev after
\nmlx5e_safe_reopen_channels() has torn down and freed the channel (and
\nits embedded SQs). Replace the three sq->netdev references with
\npriv->netdev which is safe because priv outlives channel teardown.<\/p>\n
The netdev_err() call already used priv->netdev for this reason; make
\nthe trylock\/unlock and health_channel_eq_recover calls consistent.<\/p>\n
This fixes the following KASAN splat:<\/p>\n
BUG: KASAN: use-after-free in mlx5e_tx_reporter_timeout_recover+0x1dd\/0x360 [mlx5_core]
\n Read of size 8 at addr ffff889860ed0b28 by task kworker\/u113:2\/5277<\/p>\n
Call Trace:
\n mlx5e_tx_reporter_timeout_recover+0x1dd\/0x360 [mlx5_core]
\n devlink_health_reporter_recover+0xa2\/0x150
\n devlink_health_report+0x254\/0x7c0
\n mlx5e_reporter_tx_timeout+0x297\/0x380 [mlx5_core]
\n mlx5e_tx_timeout_work+0x109\/0x170 [mlx5_core]
\n process_one_work+0x677\/0xf20
\n worker_thread+0x51f\/0xd90
\n kthread+0x3a5\/0x810
\n ret_from_fork+0x208\/0x400
\n ret_from_fork_asm+0x1a\/0x30<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net\/mlx5e: Fix use-after-free in mlx5e_tx_reporter_timeout_recover<\/p>\n
mlx5e_tx_reporter_timeout_recover() accesses sq->netdev after
\nm<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-15089","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/15089","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=15089"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15089"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15089"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}