In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net\/mlx5: fw_tracer, return NULL on create error<\/p>\n
Tracer creation can fail by returning either NULL or ERR_PTR.
\nThe return value is stored without a check on the device, and users
\ntreat ERR_PTR and NULL the same way.
\nThis also causes a crash in the core dump logic, which is missing the
\nERR_PTR check and ends up dereferencing it, as shown in the trace below.<\/p>\n
Switch tracer creation to return NULL on failure only, so callers only
\nneed a single NULL check.<\/p>\n
Internal error: Oops: 0000000096000006 [#1] SMP
\n Modules linked in: mlx5_ib ib_uverbs ib_core ipv6 mlx5_core
\n CPU: 1 UID: 0 PID: 12 Comm: kworker\/u16:0 Not tainted 6.19.7 #1 PREEMPT(none)
\n Workqueue: mlx5_health0001:01:00.0 mlx5_fw_reporter_err_work [mlx5_core]
\n pstate: a3400009 (NzCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=–)
\n pc : mlx5_fw_tracer_trigger_core_dump_general+0x58\/0xe0 [mlx5_core]
\n lr : mlx5_fw_tracer_trigger_core_dump_general+0x40\/0xe0 [mlx5_core]
\n sp : ffff800081cf3c40
\n x29: ffff800081cf3c90 x28: 0000000000000000 x27: 0000000000000000
\n x26: ffff000080018828 x25: 0000000000000000 x24: ffff000080304a05
\n x23: ffff800081cf3d80 x22: ffff0000847e01a0 x21: 0000000000000000
\n x20: ffff0000847e01a0 x19: ffffffffffffffa1 x18: ffff80008310bbf0
\n x17: ffff800080119650 x16: ffff80008010df54 x15: ffff80008010d4ac
\n x14: ffff800079c202e4 x13: ffff80008002fe60 x12: ffff800080119650
\n x11: ffff80008010df54 x10: ffff80008010d4ac x9 : ffff800079c203d8
\n x8 : ffff800081cf3c88 x7 : 0000000000000000 x6 : 0000000000000000
\n x5 : 0000000000000000 x4 : 0000000000000008 x3 : 0000000000000030
\n x2 : 0000000000000008 x1 : 0000000000000000 x0 : 00000000c5c4000e
\n Call trace:
\n mlx5_fw_tracer_trigger_core_dump_general+0x58\/0xe0 [mlx5_core] (P)
\n mlx5_fw_reporter_dump+0x30\/0x2e0 [mlx5_core]
\n devlink_health_do_dump+0x9c\/0x160
\n devlink_health_report+0x1c0\/0x288
\n mlx5_fw_reporter_err_work+0xac\/0xc0 [mlx5_core]
\n process_one_work+0x15c\/0x3d8
\n worker_thread+0x18c\/0x320
\n kthread+0x148\/0x228
\n ret_from_fork+0x10\/0x20
\n Code: b9400000 5ac00800 7a401800 540003ca (3940a260)
\n —[ end trace 0000000000000000 ]—
\n Kernel panic – not syncing: Oops: Fatal exception
\n SMP: stopping secondary CPUs
\n Kernel Offset: disabled
\n CPU features: 0x000000,00078031,75fce5a1,35fffe67
\n Memory Limit: none
\n —[ end Kernel panic – not syncing: Oops: Fatal exception ]—<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net\/mlx5: fw_tracer, return NULL on create error<\/p>\n
Tracer creation can fail by returning either NULL or ERR_PTR.
\nThe return value is<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-11284","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/11284","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=11284"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11284"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}