CVE-2026-80750 PUBLISHED

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

Assigner: Linux
Reserved: 26.08.2026 Published: 03.09.2026 Updated: 03.09.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from c29345fa5f66bea0790cf2219f57b974d4fc177b to 970b9c83a07c405fdd32bcce7cc4c9e670e58875 (excl.)
  • affected from c29345fa5f66bea0790cf2219f57b974d4fc177b to 10bf2d7261d7f724ed43a09eea4c90c19c0230a0 (excl.)
  • affected from c29345fa5f66bea0790cf2219f57b974d4fc177b to 3e013bc8b941bd52c8e3a99798d0ae8792cb71ca (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.18 is affected
  • unaffected from 0 to 6.18 (excl.)
  • unaffected from 6.18.46 to 6.18.* (incl.)
  • unaffected from 7.1.10 to 7.1.* (incl.)
  • unaffected from 7.2 to * (incl.)

References