CVE-2026-80750

pmdomain: mediatek: fix remaining %pOF after of_node_put()

State: Published
Severity: 8.4 High
Published: Sep 3, 2026
Updated: Sep 4, 2026
Reserved: Aug 26, 2026

Description

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

pmdomain: mediatek: fix remaining %pOF after of_node_put()

scpsys_get_bus_protection_legacy() looks up several legacy bus protection regmaps from device-tree nodes.

Two error paths put the device node before checking whether the regmap lookup failed, but still pass that node to dev_err_probe() with %pOF on failure. If of_node_put() drops the last reference, the later %pOF formatting can dereference a freed device node.

Keep the node reference until after the error message has been emitted in the infracfg and SMI lookup paths. Also drop the SMI node before returning when the SMI phandle is missing.

Scores

CVSS	Score	Vector	Source
3.1	8.4 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	c29345fa5f66bea0790cf2219f57b974d4fc177b to before 970b9c83a07c405fdd32bcce7cc4c9e670e58875Affected c29345fa5f66bea0790cf2219f57b974d4fc177b to before 10bf2d7261d7f724ed43a09eea4c90c19c0230a0Affected c29345fa5f66bea0790cf2219f57b974d4fc177b to before 3e013bc8b941bd52c8e3a99798d0ae8792cb71caAffected
LinuxLinux	6.18Affected before 6.18Not affected 6.18.46 through 6.18.Not affected 7.1.10 through 7.1.Not affected 7.2 and laterNot affected

References

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