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CVE-2026-99021

Linux: regulator: of: fill in supply names in of_regulator_bulk_get_all()

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)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in82ac8c4939bdbd064b4f54a580fbe4baf0d60e41Also 6.2CVE List
Published23 Oct 2026Updated 23 Oct 2026CVE List

What fixes it

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:

regulator: of: fill in supply names in of_regulator_bulk_get_all()

of_regulator_bulk_get_all() returns an array it allocated itself, and fills in only the consumer of each entry. Every other way of getting a bulk array has the supply name set, because the caller provides it, and the core expects it to be there: regulator_bulk_enable() prints it when a supply fails to enable, so a caller that hands such an array to it dereferences uninitialised memory on that path.

Copy each name into the array's own allocation, right behind the entries, so that it shares the array's lifetime and callers still have nothing extra to free. That also retires the fixed 64 byte stack buffer the names were assembled in, which is_supply_name() never bounded the copy against.

Text from CVE List

Affected versions 10

  • Linuxaffected: 27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7 before 82ac8c4939bdbd064b4f54a580fbe4baf0d60e41CVE List
  • Linuxaffected: 27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7 before a3384ec2516a7cc567bd7c09029282494469b247CVE List
  • Linuxaffected: 27b9ecc7a9ba1d0014779bfe5a6dbf630899c6e7 before e2151c29cec73f6cc70abf1c7cbc7b9b202489f5CVE List
  • Linuxaffected: fd5015686d898db6642e05cfa1cc4e1289631ecbCVE List
  • Linuxaffected: 6.1.110 before 6.2CVE List
  • Linuxaffected: 6.2CVE List
  • Linuxunaffected: all versions before 6.2CVE List
  • Linuxunaffected: 6.18.57 through 6.18.*CVE List
  • Linuxunaffected: 7.2.11 through 7.2.*CVE List
  • Linuxunaffected: 7.3CVE List

References 3