Executive Summary

Informations
Name CVE-2025-37787 First vendor Publication 2025-05-01
Vendor Cve Last vendor Modification 2025-05-02

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
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Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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

net: dsa: mv88e6xxx: avoid unregistering devlink regions which were never registered

Russell King reports that a system with mv88e6xxx dereferences a NULL pointer when unbinding this driver: https://lore.kernel.org/netdev/Z_lRkMlTJ1KQ0kVX@shell.armlinux.org.uk/

The crash seems to be in devlink_region_destroy(), which is not NULL tolerant but is given a NULL devlink global region pointer.

At least on some chips, some devlink regions are conditionally registered since the blamed commit, see mv88e6xxx_setup_devlink_regions_global():

if (cond && !cond(chip))
continue;

These are MV88E6XXX_REGION_STU and MV88E6XXX_REGION_PVT. If the chip does not have an STU or PVT, it should crash like this.

To fix the issue, avoid unregistering those regions which are NULL, i.e. were skipped at mv88e6xxx_setup_devlink_regions_global() time.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-37787

Sources (Detail)

https://git.kernel.org/stable/c/3665695e3572239dc233216f06b41f40cc771889
https://git.kernel.org/stable/c/5f5e95945bb1e08be7655da6acba648274db457d
https://git.kernel.org/stable/c/8ccdf5e24b276848eefb2755e05ff0f005a0c4a1
https://git.kernel.org/stable/c/b3c70dfe51f10df60db2646c08cebd24bcdc5247
https://git.kernel.org/stable/c/bbb80f004f7a90c3dcaacc982c59967457254a05
https://git.kernel.org/stable/c/c84f6ce918a9e6f4996597cbc62536bbf2247c96
Source Url

Alert History

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0
Date Informations
2025-05-27 02:57:27
  • First insertion