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CVE-2026-46074

spi: ch341: fix memory leaks on probe failures

MEDIUM
5.5
CVSS Score
Published: May 27, 2026 at 12:58 PM UTC
Updated: June 27, 2026 at 11:41 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: spi: ch341: fix memory leaks on probe failures Make sure to deregister the controller, disable pins, and kill and free the RX URB on probe failures to mirror disconnect and avoid memory leaks and use-after-free. Also add an explicit URB kill on disconnect for symmetry (even if that is not strictly required as USB core would have stopped it in the current setup).

Affected

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

Linux Kernel· Linux
95%
6.11 ≤ v < 6.12.866.11 ≤ v < 6.18.276.11 ≤ v < 7.0.46.11 ≤ v < 7.16.13 ≤ v < 6.18.276.19 ≤ v < 7.0.46.118846739f52afa07e63395c80227dc544f54bd7b1
Vendor states this is fixed in 5c6518633702d7f7b1153e9d8e042af847f11ef3 (fixed)
Vendor states this is fixed in 9bee2faf9e21c796d0d222c9d84a98f41bd303a0 (fixed)
Vendor states this is fixed in b99e3ddb91b499d920e63a2daff8880be68cfe9e (fixed)
Vendor states this is fixed in ff8a7996dc8bf433efe2126ffdaee5b374a89e30 (fixed)
Vendor states this is fixed in 6.11 (unaffected)
Vendor states this is fixed in 6.12.86 (unaffected)
Vendor states this is fixed in 6.18.27 (unaffected)
Vendor states this is fixed in 7.0.4 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

References (4)

Patch
Source: cverecord
https://git.kernel.org/stable/c/5c6518633702d7f7b1153e9d8e042af847f11ef3
Patch
Source: cverecord
https://git.kernel.org/stable/c/ff8a7996dc8bf433efe2126ffdaee5b374a89e30
Patch
Source: cverecord
https://git.kernel.org/stable/c/9bee2faf9e21c796d0d222c9d84a98f41bd303a0
Patch
Source: cverecord
https://git.kernel.org/stable/c/b99e3ddb91b499d920e63a2daff8880be68cfe9e

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusUNDERGOING ANALYSIS
CWE
CWE-401

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