cbcvebase.
CVE-2022-48808
published 2024-07-16

CVE-2022-48808: In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix panic when DSA master device unbinds on shutdown Rafael reports that on a…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.27%
18.8th percentile
In the Linux kernel, the following vulnerability has been resolved: net: dsa: fix panic when DSA master device unbinds on shutdown Rafael reports that on a system with LX2160A and Marvell DSA switches, if a reboot occurs while the DSA master (dpaa2-eth) is up, the following panic can be seen: systemd-shutdown[1]: Rebooting. Unable to handle kernel paging request at virtual address 00a0000800000041 [00a0000800000041] address between user and kernel address ranges Internal error: Oops: 96000004 [#1] PREEMPT SMP CPU: 6 PID: 1 Comm: systemd-shutdow Not tainted 5.16.5-00042-g8f5585009b24 #32 pc : dsa_slave_netdevice_event+0x130/0x3e4 lr : raw_notifier_call_chain+0x50/0x6c Call trace: dsa_slave_netdevice_event+0x130/0x3e4 raw_notifier_call_chain+0x50/0x6c call_netdevice_notifiers_info+0x54/0xa0 __dev_close_many+0x50/0x130 dev_close_many+0x84/0x120 unregister_netdevice_many+0x130/0x710 unregister_netdevice_queue+0x8c/0xd0 unregister_netdev+0x20/0x30 dpaa2_eth_remove+0x68/0x190 fsl_mc_driver_remove+0x20/0x5c __device_release_driver+0x21c/0x220 device_release_driver_internal+0xac/0xb0 device_links_unbind_consumers+0xd4/0x100 __device_release_driver+0x94/0x220 device_release_driver+0x28/0x40 bus_remove_device+0x118/0x124 device_del+0x174/0x420 fsl_mc_device_remove+0x24/0x40 __fsl_mc_device_remove+0xc/0x20 device_for_each_child+0x58/0xa0 dprc_remove+0x90/0xb0 fsl_mc_driver_remove+0x20/0x5c __device_release_driver+0x21c/0x220 device_release_driver+0x28/0x40 bus_remove_device+0x118/0x124 device_del+0x174/0x420 fsl_mc_bus_remove+0x80/0x100 fsl_mc_bus_shutdown+0xc/0x1c platform_shutdown+0x20/0x30 device_shutdown+0x154/0x330 __do_sys_reboot+0x1cc/0x250 __arm64_sys_reboot+0x20/0x30 invoke_syscall.constprop.0+0x4c/0xe0 do_el0_svc+0x4c/0x150 el0_svc+0x24/0xb0 el0t_64_sync_handler+0xa8/0xb0 el0t_64_sync+0x178/0x17c It can be seen from the stack trace that the problem is that the deregistration of the master causes a dev_close(), which gets notified as NETDEV_GOING_DOWN to dsa_slave

Affected

10 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 5.16.10-1 (bookworm)linux 5.16.10-1 (bookworm)
linuxlinux
linuxlinux>= 0650bf52b31ff35dc6430fc2e37969c36baba724 < ff45899e732e57088985e3a497b1d9100571c0f5ff45899e732e57088985e3a497b1d9100571c0f5
linuxlinux>= 0650bf52b31ff35dc6430fc2e37969c36baba724 < 89b60402d43cdab4387dbbf24afebda5cf092ae789b60402d43cdab4387dbbf24afebda5cf092ae7
linuxlinux>= 0650bf52b31ff35dc6430fc2e37969c36baba724 < ee534378f00561207656663d93907583958339aeee534378f00561207656663d93907583958339ae
linuxlinux_kernel>= 0 < 5.16.10-15.16.10-1
linuxlinux_kernel>= 0 < 5.16.10-15.16.10-1
linuxlinux_kernel>= 0 < 5.16.10-15.16.10-1
linuxlinux_kernel>= 5.15 < 5.15.1555.15.155
linuxlinux_kernel>= 5.16 < 5.16.105.16.10

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_ubuntu6.3MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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