CVE-2021-47400: In the Linux kernel, the following vulnerability has been resolved: net: hns3: do not allow call hns3_nic_net_open repeatedly hns3_nic_net_open() is not…

PriorityP419medium5.5CVSS 3.1

AVLACLPRLUINSUCNINAH

EPSS

0.25%

16.8th percentile

In the Linux kernel, the following vulnerability has been resolved: net: hns3: do not allow call hns3_nic_net_open repeatedly hns3_nic_net_open() is not allowed to called repeatly, but there is no checking for this. When doing device reset and setup tc concurrently, there is a small oppotunity to call hns3_nic_net_open repeatedly, and cause kernel bug by calling napi_enable twice. The calltrace information is like below: [ 3078.222780] ------------[ cut here ]------------ [ 3078.230255] kernel BUG at net/core/dev.c:6991! [ 3078.236224] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP [ 3078.243431] Modules linked in: hns3 hclgevf hclge hnae3 vfio_iommu_type1 vfio_pci vfio_virqfd vfio pv680_mii(O) [ 3078.258880] CPU: 0 PID: 295 Comm: kworker/u8:5 Tainted: G O 5.14.0-rc4+ #1 [ 3078.269102] Hardware name: , BIOS KpxxxFPGA 1P B600 V181 08/12/2021 [ 3078.276801] Workqueue: hclge hclge_service_task [hclge] [ 3078.288774] pstate: 60400009 (nZCv daif +PAN -UAO -TCO BTYPE=--) [ 3078.296168] pc : napi_enable+0x80/0x84 tc qdisc sho[w 3d0e7v8 .e3t0h218 79] lr : hns3_nic_net_open+0x138/0x510 [hns3] [ 3078.314771] sp : ffff8000108abb20 [ 3078.319099] x29: ffff8000108abb20 x28: 0000000000000000 x27: ffff0820a8490300 [ 3078.329121] x26: 0000000000000001 x25: ffff08209cfc6200 x24: 0000000000000000 [ 3078.339044] x23: ffff0820a8490300 x22: ffff08209cd76000 x21: ffff0820abfe3880 [ 3078.349018] x20: 0000000000000000 x19: ffff08209cd76900 x18: 0000000000000000 [ 3078.358620] x17: 0000000000000000 x16: ffffc816e1727a50 x15: 0000ffff8f4ff930 [ 3078.368895] x14: 0000000000000000 x13: 0000000000000000 x12: 0000259e9dbeb6b4 [ 3078.377987] x11: 0096a8f7e764eb40 x10: 634615ad28d3eab5 x9 : ffffc816ad8885b8 [ 3078.387091] x8 : ffff08209cfc6fb8 x7 : ffff0820ac0da058 x6 : ffff0820a8490344 [ 3078.396356] x5 : 0000000000000140 x4 : 0000000000000003 x3 : ffff08209cd76938 [ 3078.405365] x2 : 0000000000000000 x1 : 0000000000000010 x0 : ffff0820abfe38a0 [ 3078.414657] Call trace: [ 3078.418517] napi_e

Affected

16 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 5.14.12-1 (bookworm)	linux 5.14.12-1 (bookworm)
linux	linux	—	—
linux	linux	>= e888402789b9db5de4fcda361331d66dbf0cd9fd < 5a31d4e73ada8022427b69b10fd1f01a6a8d4b3d	5a31d4e73ada8022427b69b10fd1f01a6a8d4b3d
linux	linux	>= e888402789b9db5de4fcda361331d66dbf0cd9fd < f8ba689cb69523144d10606096ef686002dd7285	f8ba689cb69523144d10606096ef686002dd7285
linux	linux	>= e888402789b9db5de4fcda361331d66dbf0cd9fd < 3dac38bdce7932901b9f0b71c62331852c809e61	3dac38bdce7932901b9f0b71c62331852c809e61
linux	linux	>= e888402789b9db5de4fcda361331d66dbf0cd9fd < 5b09e88e1bf7fe86540fab4b5f3eece8abead39e	5b09e88e1bf7fe86540fab4b5f3eece8abead39e
linux	linux_kernel	—	—
linux	linux_kernel	—	—
linux	linux_kernel	—	—
linux	linux_kernel	>= 0 < 5.10.84-1	5.10.84-1
linux	linux_kernel	>= 0 < 5.14.12-1	5.14.12-1
linux	linux_kernel	>= 0 < 5.14.12-1	5.14.12-1
linux	linux_kernel	>= 0 < 5.14.12-1	5.14.12-1
linux	linux_kernel	>= 5.0 < 5.4.151	5.4.151
linux	linux_kernel	>= 5.11 < 5.14.10	5.14.10
linux	linux_kernel	>= 5.5 < 5.10.71	5.10.71

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv5.5MEDIUM

vendor_debian5.5MEDIUM

vendor_redhat5.5MEDIUM

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