Linux vulnerability

What happened

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 versions

Linux: 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c through before 5cc3300fab262b26c28bc2fc06df693410c3840b (git); 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c through before 0f11444271110d9b5bc6316a153c6431abda899c (git); 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c through before d44872a569b8fbacde457ff2587a775e5004bb79 (git); 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c through before 14aed0d4e58389cc6a88acf8610b12d3e476272b (git); 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c through before 6362c4a7d7e21e68cd9aa04df7cde16befba3a4b (git); 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c through before 9dd7489943324298bb0f385495795a82f1dd6507 (git); 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c through before 37792091ab28ba030fd8d61184c47d4d51294170 (git); 2b6d83e2b8b7de82331a6a1dcd64b51020a6031c through before c1aad75595fb67edc7fda8af249d3b886efa1be9 (git); 3.18; V3.1.6 through before * (custom) Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

• Apply vendor-provided updates or mitigations.
• Review affected product exposure and access logs.