Bug 2559706 (CVE-2026-99021) - CVE-2026-99021 kernel: regulator: of: fill in supply names in of_regulator_bulk_get_all()
Summary: CVE-2026-99021 kernel: regulator: of: fill in supply names in of_regulator_bu...
Keywords:
Status: NEW
Alias: CVE-2026-99021
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-23 13:19 UTC by OSIDB Bzimport
Modified: 2026-10-27 10:03 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
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Description OSIDB Bzimport 2026-10-23 13:19:12 UTC
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.


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