CVE-2022-50047

net: dsa: mv88e6060: prevent crash on an unused port

State: Published
Severity: Not scored
Published: Jun 18, 2025
Updated: May 11, 2026
Reserved: Jun 18, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

net: dsa: mv88e6060: prevent crash on an unused port

If the port isn't a CPU port nor a user port, 'cpu_dp' is a null pointer and a crash happened on dereferencing it in mv88e6060_setup_port():

[ 9.575872] Unable to handle kernel NULL pointer dereference at virtual address 00000014 ... [ 9.942216] mv88e6060_setup from dsa_register_switch+0x814/0xe84 [ 9.948616] dsa_register_switch from mdio_probe+0x2c/0x54 [ 9.954433] mdio_probe from really_probe.part.0+0x98/0x2a0 [ 9.960375] really_probe.part.0 from driver_probe_device+0x30/0x10c [ 9.967029] driver_probe_device from __device_attach_driver+0xb8/0x13c [ 9.973946] __device_attach_driver from bus_for_each_drv+0x90/0xe0 [ 9.980509] bus_for_each_drv from __device_attach+0x110/0x184 [ 9.986632] __device_attach from bus_probe_device+0x8c/0x94 [ 9.992577] bus_probe_device from deferred_probe_work_func+0x78/0xa8 [ 9.999311] deferred_probe_work_func from process_one_work+0x290/0x73c [ 10.006292] process_one_work from worker_thread+0x30/0x4b8 [ 10.012155] worker_thread from kthread+0xd4/0x10c [ 10.017238] kthread from ret_from_fork+0x14/0x3c

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	0abfd494deefdbab66ac03c1181a614285e7d90c to before cb1753bc689c7a7f94da6eee7efc1ae6d8abb36cAffected 0abfd494deefdbab66ac03c1181a614285e7d90c to before 92dc64e8f591425ce4dabf7d479ebf6e67fb8853Affected 0abfd494deefdbab66ac03c1181a614285e7d90c to before dd236b62d25e44ecfa26b0910a12f8d8251aff00Affected 0abfd494deefdbab66ac03c1181a614285e7d90c to before f3a4b55829617cad2d36fa6524367ef629566ba6Affected 0abfd494deefdbab66ac03c1181a614285e7d90c to before 246bbf2f977ea36aaf41f5d24370fef433250728Affected
LinuxLinux	4.15Affected before 4.15Not affected 5.4.211 through 5.4.Not affected 5.10.138 through 5.10.Not affected 5.15.63 through 5.15.Not affected 5.19.4 through 5.19.Not affected 6.0 and laterNot affected

Product

Versions

LinuxLinux

0abfd494deefdbab66ac03c1181a614285e7d90c to before cb1753bc689c7a7f94da6eee7efc1ae6d8abb36cAffected
0abfd494deefdbab66ac03c1181a614285e7d90c to before 92dc64e8f591425ce4dabf7d479ebf6e67fb8853Affected
0abfd494deefdbab66ac03c1181a614285e7d90c to before dd236b62d25e44ecfa26b0910a12f8d8251aff00Affected
0abfd494deefdbab66ac03c1181a614285e7d90c to before f3a4b55829617cad2d36fa6524367ef629566ba6Affected
0abfd494deefdbab66ac03c1181a614285e7d90c to before 246bbf2f977ea36aaf41f5d24370fef433250728Affected

LinuxLinux

4.15Affected
before 4.15Not affected
5.4.211 through 5.4.*Not affected
5.10.138 through 5.10.*Not affected
5.15.63 through 5.15.*Not affected
5.19.4 through 5.19.*Not affected
6.0 and laterNot affected

References

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