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CVE-2026-98565

Linux: net: dsa: mt7530: fix NULL dereference on unbind of MT7531 and MT7621

Linux LinuxOperating systems
Open in ThreatlineRecord JSON
CVSS
NoneNot scored
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.20%Chance of exploitation activity in the next 30 days, higher than 9% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in62c0e38b2e5034184d4502ce77bd178b29e59b83Fixed versionCVE List
Published18 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 62c0e38b2e5034184d4502ce77bd178b29e59b83LinuxCVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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

net: dsa: mt7530: fix NULL dereference on unbind of MT7531 and MT7621

The core and io supplies are only requested for ID_MT7530: both the devm_regulator_get() in probe and the regulator_enable() in mt7530_setup() are guarded by the switch id, but mt7530_remove() disables them unconditionally. On an MT7621 or an MT7531 both pointers are still NULL from devm_kzalloc(), so rmmod or a sysfs unbind calls regulator_disable() on NULL.

Text from CVE List

Affected versions 12

  • Linuxaffected: ddda1ac116c852bb969541ed53cffef7255c4961 before bd172580e624bac00d83abd5c4320d2e14d853bcCVE List
  • Linuxaffected: ddda1ac116c852bb969541ed53cffef7255c4961 before e9a5298532780ecdd05c3220f3e1e3067b3537c3CVE List
  • Linuxaffected: ddda1ac116c852bb969541ed53cffef7255c4961 before 62c0e38b2e5034184d4502ce77bd178b29e59b83CVE List
  • Linuxaffected: ddda1ac116c852bb969541ed53cffef7255c4961 before aae2a1f1e3a0ac5eeb439262a2328a2a392413acCVE List
  • Linuxaffected: ddda1ac116c852bb969541ed53cffef7255c4961 before c2cdef41e0b4d8ed23a5b41e6ad4e64594e055e4CVE List
  • Linuxaffected: 5.1CVE List
  • Linuxunaffected: all versions before 5.1CVE List
  • Linuxunaffected: 6.6.158 through 6.6.*CVE List
  • Linuxunaffected: 6.12.112 through 6.12.*CVE List
  • Linuxunaffected: 6.18.55 through 6.18.*CVE List
  • Linuxunaffected: 7.2.9 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 5