CVE-2025-21998

firmware: qcom: uefisecapp: fix efivars registration race

MEDIUM
4.7
CVSS Score
Published: April 3, 2025 at 07:19 AM UTC
Updated: June 17, 2026 at 08:44 AM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM4.7
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: firmware: qcom: uefisecapp: fix efivars registration race Since the conversion to using the TZ allocator, the efivars service is registered before the memory pool has been allocated, something which can lead to a NULL-pointer dereference in case of a racing EFI variable access. Make sure that all resources have been set up before registering the efivars.

Affected

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

6.11 ≤ v < 6.12.216.11 ≤ v < 6.13.96.11 ≤ v < 6.146.13 ≤ v < 6.13.96.14 rc16.14 rc26.14 rc36.14 rc46.14 rc56.14 rc66.14 rc76612103ec35af6058bb85ab24dae28e119b3c055
Vendor states this is fixed in c4e37b381a7a243c298a4858fc0a5a74e737c79a (fixed)
Vendor states this is fixed in da8d493a80993972c427002684d0742560f3be4a (fixed)
Vendor states this is fixed in f15a2b96a0e41c426c63a932d0e63cde7b9784aa (fixed)
Vendor states this is fixed in 6.11 (unaffected)
Vendor states this is fixed in 6.12.21 (unaffected)
Vendor states this is fixed in 6.13.9 (unaffected)
Vendor states this is fixed in 6.14 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c4e37b381a7a243c298a4858fc0a5a74e737c79a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/da8d493a80993972c427002684d0742560f3be4a
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/f15a2b96a0e41c426c63a932d0e63cde7b9784aa

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

4.7MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-367CWE-476

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card