CVE-2025-21918

usb: typec: ucsi: Fix NULL pointer access

MEDIUM
5.5
CVSS Score
Published: April 1, 2025 at 03:40 PM UTC
Updated: June 17, 2026 at 08:44 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: usb: typec: ucsi: Fix NULL pointer access Resources should be released only after all threads that utilize them have been destroyed. This commit ensures that resources are not released prematurely by waiting for the associated workqueue to complete before deallocating them.

Affected

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

5.16 ≤ v < 6.1.1335.16 ≤ v < 6.12.195.16 ≤ v < 6.13.75.16 ≤ v < 6.145.16 ≤ v < 6.6.836.13 ≤ v < 6.13.76.2 ≤ v < 6.6.836.7 ≤ v < 6.12.196.14 rc16.14 rc26.14 rc36.14 rc46.14 rc5b9aa02ca39a49740926c2c450a1505a4a0f8954a
Vendor states this is fixed in 079a3e52f3e751bb8f5937195bdf25c5d14fdff0 (fixed)
Vendor states this is fixed in 46fba7be161bb89068958138ea64ec33c0b446d4 (fixed)
Vendor states this is fixed in 592a0327d026a122e97e8e8bb7c60cbbe7697344 (fixed)
Vendor states this is fixed in 7a735a8a46f6ebf898bbefd96659ca5da798bce0 (fixed)
Vendor states this is fixed in b13abcb7ddd8d38de769486db5bd917537b32ab1 (fixed)
Vendor states this is fixed in 5.16 (unaffected)
Vendor states this is fixed in 6.1.133 (unaffected)
Vendor states this is fixed in 6.12.19 (unaffected)
Vendor states this is fixed in 6.13.7 (unaffected)
Vendor states this is fixed in 6.14 (unaffected)
Vendor states this is fixed in 6.6.83 (unaffected)

References (6)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/079a3e52f3e751bb8f5937195bdf25c5d14fdff0
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/46fba7be161bb89068958138ea64ec33c0b446d4
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/592a0327d026a122e97e8e8bb7c60cbbe7697344
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7a735a8a46f6ebf898bbefd96659ca5da798bce0
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b13abcb7ddd8d38de769486db5bd917537b32ab1
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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