In the Linux kernel, the following vulnerability has been resolved: mailbox: add sanity check for channel array Fail gracefully if there is no… (CVE-2026-53295)
A vulnerability in the Linux kernel's mailbox subsystem was addressed by adding a sanity check for the channel array. The issue could cause a kernel OOPS if no channel array was attached to the mailbox controller, potentially leading to a denial of service. The fix ensures graceful failure in such cases.
AI Analysis
Technical Summary
The Linux kernel mailbox subsystem lacked a sanity check for the presence of a channel array attached to the mailbox controller. Without this check, dereferencing a null or missing channel array could cause a kernel OOPS, resulting in a denial of service condition. The vulnerability was resolved by adding a sanity check to fail gracefully if no channel array is attached, preventing the kernel crash.
Potential Impact
This vulnerability can cause a denial of service by triggering a kernel OOPS when the mailbox controller attempts to dereference a non-existent channel array. There is no impact on confidentiality or integrity. The severity is moderate with a CVSS score of 5.5, reflecting local attack vector, low complexity, and no user interaction required.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to add the necessary sanity check. Users should apply the official kernel update that includes this patch to prevent the denial of service. Patch status is not explicitly confirmed in the provided data; check the vendor or Linux kernel advisory for the exact fixed versions and update accordingly.
In the Linux kernel, the following vulnerability has been resolved: mailbox: add sanity check for channel array Fail gracefully if there is no… (CVE-2026-53295)
Description
A vulnerability in the Linux kernel's mailbox subsystem was addressed by adding a sanity check for the channel array. The issue could cause a kernel OOPS if no channel array was attached to the mailbox controller, potentially leading to a denial of service. The fix ensures graceful failure in such cases.
CVSS v3.1
Score 5.5medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Linux kernel mailbox subsystem lacked a sanity check for the presence of a channel array attached to the mailbox controller. Without this check, dereferencing a null or missing channel array could cause a kernel OOPS, resulting in a denial of service condition. The vulnerability was resolved by adding a sanity check to fail gracefully if no channel array is attached, preventing the kernel crash.
Potential Impact
This vulnerability can cause a denial of service by triggering a kernel OOPS when the mailbox controller attempts to dereference a non-existent channel array. There is no impact on confidentiality or integrity. The severity is moderate with a CVSS score of 5.5, reflecting local attack vector, low complexity, and no user interaction required.
Mitigation Recommendations
A fix has been implemented in the Linux kernel to add the necessary sanity check. Users should apply the official kernel update that includes this patch to prevent the denial of service. Patch status is not explicitly confirmed in the provided data; check the vendor or Linux kernel advisory for the exact fixed versions and update accordingly.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-rf57-3w24-v5g9
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-53295"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a4e4ed6c9d9e3dbe3288260
Added to database: 07/08/2026, 13:21:26 UTC
Last enriched: 09/08/2026, 14:35:06 UTC
Last updated: 09/14/2026, 22:01:35 UTC
Views: 95
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