CVE-2024-35924

usb: typec: ucsi: Limit read size on v1.2

MEDIUM
5.5
CVSS Score
Published: May 19, 2024 at 10:10 AM UTC
Updated: August 5, 2026 at 12:04 PM 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: Limit read size on v1.2 Between UCSI 1.2 and UCSI 2.0, the size of the MESSAGE_IN region was increased from 16 to 256. In order to avoid overflowing reads for older systems, add a mechanism to use the read UCSI version to truncate read sizes on UCSI v1.2.

Affected

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

5.5 ≤ v < 6.6.275.5 ≤ v < 6.8.65.5 ≤ v < 6.96.7 ≤ v < 6.8.65.5bdc62f2bae8fb0e8e99574de5232f0a3c54a27df
Vendor states this is fixed in 0defcaa09d3b21e8387829ee3a652c43fa91e13f (fixed)
Vendor states this is fixed in 266f403ec47573046dee4bcebda82777ce702c40 (fixed)
Vendor states this is fixed in b3db266fb031fba88c423d4bb8983a73a3db6527 (fixed)
Vendor states this is fixed in 5.5 (unaffected)
Vendor states this is fixed in 6.6.27 (unaffected)
Vendor states this is fixed in 6.8.6 (unaffected)
Vendor states this is fixed in 6.9 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/0defcaa09d3b21e8387829ee3a652c43fa91e13f
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/266f403ec47573046dee4bcebda82777ce702c40
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/b3db266fb031fba88c423d4bb8983a73a3db6527

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

StatusMODIFIED
CWE
NVD-CWE-noinfo

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