CVE-2024-53922: Samsung Exynos Auto Processor DoS Flaw

CVE-2024-53922 Overview

CVE-2024-53922 is a kernel-level denial of service vulnerability in the buffer queue driver shipped with Samsung Automotive Processor Exynos Auto 8890, V7, V9, and V920. The driver fails to validate an input length before processing, allowing a local attacker to trigger a kernel-side fault. Successful exploitation crashes the kernel and disrupts availability of the automotive system-on-chip. The issue is categorized under [CWE-1284] (Improper Validation of Specified Quantity in Input). Samsung has published an advisory acknowledging the flaw affecting these Exynos Auto platforms.

Critical Impact
A local attacker can trigger a kernel denial of service in Samsung Exynos Auto processors by sending unchecked input to the buffer queue driver, disrupting automotive workloads that rely on the affected SoC.

Affected Products

Samsung Exynos Auto 8890
Samsung Exynos Auto V7 and V9
Samsung Exynos Auto V920

Discovery Timeline

2026-09-14 - CVE-2024-53922 published to NVD
2026-09-14 - Last updated in NVD database

Technical Details for CVE-2024-53922

Vulnerability Analysis

The vulnerability resides in the buffer queue driver used by Samsung Exynos Auto processors. The driver accepts input from user space but omits a length check before operating on the supplied data. The missing bounds validation lets an attacker submit an input whose size exceeds the driver's assumptions, forcing the kernel into a fault condition. The result is a denial of service that terminates kernel execution paths tied to the buffer queue subsystem.

Because the attack vector is local, an adversary needs code execution on the target system. In an automotive context, that includes compromised infotainment processes, sideloaded applications, or attacker-controlled peripherals that can reach the driver interface. The impact centers on availability rather than confidentiality, but a kernel crash on a moving vehicle's compute stack can degrade safety-adjacent services.

Root Cause

The root cause is improper validation of a length parameter passed to the buffer queue driver. Without the bounds check, the driver processes oversized or malformed inputs and reaches an unsafe kernel code path, producing the denial of service.

Attack Vector

An attacker with local access invokes the buffer queue driver through its exposed interface and supplies input that bypasses the missing length check. See the Samsung Advisory for CVE-2024-53922 for vendor-supplied technical details. Kernel bug hunting methodology relevant to this class of issue is described in the Diconium Blog on KASAN.

// No verified proof-of-concept code is available for CVE-2024-53922.
// Refer to the Samsung advisory for vendor-supplied technical details.

Detection Methods for CVE-2024-53922

Indicators of Compromise

Unexpected kernel panics or oops messages referencing the Exynos buffer queue driver in dmesg or serial console logs.
Repeated crashes or reboots of Exynos Auto based ECUs following interaction with a specific user-space process.
Kernel address sanitizer (KASAN) reports flagging out-of-bounds access in buffer queue driver code paths during testing.

Detection Strategies

Enable KASAN in pre-production Exynos Auto kernel builds to surface improper length handling before deployment.
Correlate driver crash traces with the initiating process identifier to identify user-space components triggering the fault.
Monitor telemetry from automotive ECUs for abnormal reset patterns tied to buffer queue driver activity.

Monitoring Recommendations

Ingest kernel and driver logs from Exynos Auto platforms into a central logging pipeline for anomaly review.
Track patch level and firmware revision across fleet vehicles to identify unpatched Exynos Auto units.
Alert on repeated denial of service events on the same ECU within short time windows.

How to Mitigate CVE-2024-53922

Immediate Actions Required

Apply the Samsung firmware update for affected Exynos Auto processors as soon as it is available through the OEM update channel.
Inventory automotive systems using Exynos Auto 8890, V7, V9, and V920 and confirm patch status per ECU.
Restrict local access to the buffer queue driver interface to trusted, signed components only.

Patch Information

Samsung publishes fixes through its semiconductor product security update channel. Refer to Samsung Product Security Updates and the specific Samsung Advisory for CVE-2024-53922 for the fixed firmware versions and integration guidance for OEMs and Tier 1 suppliers.

Workarounds

Limit which user-space processes can open or invoke the buffer queue driver through mandatory access control policies.
Disable or gate third-party application installation on affected ECUs until the vendor patch is deployed.
Segment automotive networks so that a crashed Exynos Auto ECU cannot cascade failures across other safety systems.

bash

# Configuration example: verify running kernel and driver module state on an Exynos Auto system
uname -a
dmesg | grep -i "buffer queue\|exynos"
lsmod | grep -i exynos