CVE-2021-47067

soc/tegra: regulators: Fix locking up when voltage-spread is out of range

MEDIUM
5.5
CVSS Score
Published: February 29, 2024 at 10:37 PM UTC
Updated: June 17, 2026 at 04:16 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: soc/tegra: regulators: Fix locking up when voltage-spread is out of range Fix voltage coupler lockup which happens when voltage-spread is out of range due to a bug in the code. The max-spread requirement shall be accounted when CPU regulator doesn't have consumers. This problem is observed on Tegra30 Ouya game console once system-wide DVFS is enabled in a device-tree.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.11 ≤ v < 5.11.215.12 ≤ v < 5.12.45.5 ≤ v < 5.10.375.5 ≤ v < 5.11.215.5 ≤ v < 5.12.45.5 ≤ v < 5.135.5783807436f363e5b1ad4d43ba7debbedfcadbb99
Vendor states this is fixed in a1ad124c836816fac8bd5e461d36eaf33cee4e24 (fixed)
Vendor states this is fixed in dc4452867200fa94589b382740952b58aa1c3e6c (fixed)
Vendor states this is fixed in ef85bb582c41524e9e68dfdbde48e519dac4ab3d (fixed)
Vendor states this is fixed in ff39adf5d31c72025bba799aec69c5c86d81d549 (fixed)
Vendor states this is fixed in 5.10.37 (unaffected)
Vendor states this is fixed in 5.11.21 (unaffected)
Vendor states this is fixed in 5.12.4 (unaffected)
Vendor states this is fixed in 5.13 (unaffected)
Vendor states this is fixed in 5.5 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/a1ad124c836816fac8bd5e461d36eaf33cee4e24
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/dc4452867200fa94589b382740952b58aa1c3e6c
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ef85bb582c41524e9e68dfdbde48e519dac4ab3d
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/ff39adf5d31c72025bba799aec69c5c86d81d549

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-667

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