CVE-2026-53295

mailbox: add sanity check for channel array

MEDIUM
5.5
CVSS Score
Published: June 26, 2026 at 07:40 PM UTC
Updated: October 15, 2026 at 02:20 AM UTC
4 products affected across 2 vendorsLinux KernelSIMATIC S7-1500 CPU 1518-4 Pn /dp MFP FirmwareSiplus S7-1500 CPU 1518-4 Pn /dp MFP Firmware

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
MEDIUM5.5
Exploit prediction
EPSS 0.1%

Description

In the Linux kernel, the following vulnerability has been resolved: mailbox: add sanity check for channel array Fail gracefully if there is no channel array attached to the mailbox controller. Otherwise the later dereference will cause an OOPS which might not be seen because mailbox controllers might instantiate very early. Remove the comment explaining the obvious while here.

Affected

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

3.18.1 ≤ v < 5.10.2585.11 ≤ v < 5.15.2095.16 ≤ v < 6.1.1756.13 ≤ v < 6.18.336.19 ≤ v < 7.0.106.2 ≤ v < 6.6.1416.7 ≤ v < 6.12.912b6d83e2b8b7de82331a6a1dcd64b51020a6031c3.183.18 rc23.18 rc33.18 rc43.18 rc53.18 rc63.18 rc77.17.1 rc1
Vendor states this is fixed in 0f11444271110d9b5bc6316a153c6431abda899c (fixed)
Vendor states this is fixed in 14aed0d4e58389cc6a88acf8610b12d3e476272b (fixed)
Vendor states this is fixed in 37792091ab28ba030fd8d61184c47d4d51294170 (fixed)
Vendor states this is fixed in 5cc3300fab262b26c28bc2fc06df693410c3840b (fixed)
Vendor states this is fixed in 6362c4a7d7e21e68cd9aa04df7cde16befba3a4b (fixed)
Vendor states this is fixed in 9dd7489943324298bb0f385495795a82f1dd6507 (fixed)
Vendor states this is fixed in c1aad75595fb67edc7fda8af249d3b886efa1be9 (fixed)
Vendor states this is fixed in d44872a569b8fbacde457ff2587a775e5004bb79 (fixed)
Vendor states this is fixed in 3.18 (unaffected)
Vendor states this is fixed in 5.10.258 (unaffected)
Vendor states this is fixed in 5.15.209 (unaffected)
Vendor states this is fixed in 6.1.175 (unaffected)
Vendor states this is fixed in 6.12.91 (unaffected)
Vendor states this is fixed in 6.18.33 (unaffected)
Vendor states this is fixed in 6.6.141 (unaffected)
Vendor states this is fixed in 7.0.10 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

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

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