CVE-2022-50047

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

MEDIUM

5.5

CVSS Score

Published: June 18, 2025 at 11:01 AM UTC

Updated: June 17, 2026 at 05:22 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.15 ≤ v < 5.10.1384.15 ≤ v < 5.15.634.15 ≤ v < 5.19.44.15 ≤ v < 5.4.2114.15 ≤ v < 6.05.11 ≤ v < 5.15.635.16 ≤ v < 5.19.45.5 ≤ v < 5.10.1380abfd494deefdbab66ac03c1181a614285e7d90c4.15 6.0 rc1

Vendor states this is fixed in 246bbf2f977ea36aaf41f5d24370fef433250728 (fixed)

Vendor states this is fixed in 92dc64e8f591425ce4dabf7d479ebf6e67fb8853 (fixed)

Vendor states this is fixed in cb1753bc689c7a7f94da6eee7efc1ae6d8abb36c (fixed)

Vendor states this is fixed in dd236b62d25e44ecfa26b0910a12f8d8251aff00 (fixed)

Vendor states this is fixed in f3a4b55829617cad2d36fa6524367ef629566ba6 (fixed)

Vendor states this is fixed in 4.15 (unaffected)

Vendor states this is fixed in 5.10.138 (unaffected)

Vendor states this is fixed in 5.15.63 (unaffected)

Vendor states this is fixed in 5.19.4 (unaffected)

Vendor states this is fixed in 5.4.211 (unaffected)

Vendor states this is fixed in 6.0 (unaffected)