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CVE-2026-98620

Linux: net: ethernet: mtk_eth_soc: unregister net_devices in case of probe failure

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 in245bea0c7ab278150c70366bdeb69b901327133cAlso 7254b702e556158e34b4d7c168b5d8e7da5978af, 0fdb944d4df02223c67d5e65c4c134ecb57a5668 and 1 moreCVE List
Published18 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 245bea0c7ab278150c70366bdeb69b901327133cLinuxCVE List
  • 7254b702e556158e34b4d7c168b5d8e7da5978afLinuxCVE List
  • 0fdb944d4df02223c67d5e65c4c134ecb57a5668LinuxCVE List
  • 310d1ac61a4d5a2ca8356a3a48d263acf54503ceLinuxCVE 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: ethernet: mtk_eth_soc: unregister net_devices in case of probe failure

If register_netdev() fails for one of the MTK_MAX_DEVS devices in mtk_probe(), the error path jumps to err_deinit_ppe, skipping mtk_unreg_dev(). The previously registered net_devices are then freed by mtk_free_dev() while still in NETREG_REGISTERED state, hitting the BUG_ON(dev->reg_state != NETREG_UNREGISTERED).

Route the register_netdev() failure to err_unreg_netdev so the net_devices registered so far are properly unregistered before being freed.

Text from CVE List

Affected versions 12

  • Linuxaffected: 8a8a9e89f801ce5d3d1d57ac48db678caf072147 before 245bea0c7ab278150c70366bdeb69b901327133cCVE List
  • Linuxaffected: 8a8a9e89f801ce5d3d1d57ac48db678caf072147 before ab3bde3b3e56331b4f53a1f6cf4e5e9d1c14c1a0CVE List
  • Linuxaffected: 8a8a9e89f801ce5d3d1d57ac48db678caf072147 before 7254b702e556158e34b4d7c168b5d8e7da5978afCVE List
  • Linuxaffected: 8a8a9e89f801ce5d3d1d57ac48db678caf072147 before 0fdb944d4df02223c67d5e65c4c134ecb57a5668CVE List
  • Linuxaffected: 8a8a9e89f801ce5d3d1d57ac48db678caf072147 before 310d1ac61a4d5a2ca8356a3a48d263acf54503ceCVE List
  • Linuxaffected: 4.9CVE List
  • Linuxunaffected: all versions before 4.9CVE 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