CVE-2024-33056

Q: What is the severity of CVE-2024-33056?

CVE-2024-33056 has a CVSS score of 8.4 (HIGH). CVE-2024-33056 is a memory corruption vulnerability in Qualcomm's Shared Memory (SMEM) subsystem that allows attackers to potentially execute arbitrary code or cause denial of service. This affects devices using Qualcomm chipsets, primarily mobile devices and IoT products. The vulnerability occurs when continuously allocating and accessing entries in an SMEM partition.

8.4 HIGH

Denial of Service

📋 TL;DR

CVE-2024-33056 is a memory corruption vulnerability in Qualcomm's Shared Memory (SMEM) subsystem that allows attackers to potentially execute arbitrary code or cause denial of service. This affects devices using Qualcomm chipsets, primarily mobile devices and IoT products. The vulnerability occurs when continuously allocating and accessing entries in an SMEM partition.

💻 Affected Systems

Products:

Qualcomm chipsets with SMEM subsystem

Versions: Multiple Qualcomm chipset versions prior to December 2024 security updates

Operating Systems: Android, Linux-based systems using Qualcomm chipsets

Default Config Vulnerable: ⚠️ Yes

Notes: Affects devices using vulnerable Qualcomm chipset firmware. Exact device models depend on chipset implementation.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution leading to complete device compromise, data theft, or persistent backdoor installation.

🟠

Likely Case

Device crash/reboot (denial of service) or privilege escalation from user to kernel space.

🟢

If Mitigated

Limited impact if proper memory protections are enabled, potentially just application crashes.

🌐 Internet-Facing: MEDIUM - Requires specific conditions and potentially local access, but could be chained with other vulnerabilities.

🏢 Internal Only: HIGH - If exploited locally, could lead to privilege escalation and system compromise.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires specific memory manipulation and likely local access. No public exploits available as of December 2024.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Qualcomm December 2024 security bulletin patches

Vendor Advisory: https://docs.qualcomm.com/product/publicresources/securitybulletin/december-2024-bulletin.html

Restart Required: No

Instructions:

1. Check device manufacturer for firmware updates. 2. Apply Qualcomm chipset firmware updates from December 2024 or later. 3. Update Android security patch level to December 2024 or later.

🔧 Temporary Workarounds

Restrict local access

all

Limit physical and network access to vulnerable devices to reduce attack surface.

🧯 If You Can't Patch

Isolate vulnerable devices on separate network segments
Implement strict application whitelisting and privilege restrictions

🔍 How to Verify

Check if Vulnerable:

Check Android security patch date (Settings > About phone > Android security patch level) - if before December 2024, likely vulnerable. Check with device manufacturer for specific firmware version.

Check Version:

adb shell getprop ro.build.version.security_patch

Verify Fix Applied:

Verify Android security patch level is December 2024 or later. Confirm device firmware has been updated to version containing December 2024 Qualcomm security patches.

📡 Detection & Monitoring

Log Indicators:

Kernel panic logs
SMEM subsystem error messages
Unexpected device reboots

Network Indicators:

Unusual local privilege escalation attempts
Suspicious inter-process communication

SIEM Query:

source="kernel" AND ("SMEM" OR "memory corruption" OR "panic")

📊 Metadata

CVE ID: CVE-2024-33056

CVSS v3 Score: 8.4 (HIGH)

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-126

Published: December 2, 2024

Last Updated: December 12, 2024

🔗 References

https://docs.qualcomm.com/product/publicresources/securitybulletin/december-2024-bulletin.html Vendor Advisory

📋 TL;DR

💻 Affected Systems

📦 What is this software?

205 Mobile Platform Firmware by Qualcomm

315 5g Iot Modem Firmware by Qualcomm

9205 Lte Modem Firmware by Qualcomm

9206 Lte Modem Firmware by Qualcomm

9207 Lte Modem Firmware by Qualcomm

Fastconnect 6200 Firmware by Qualcomm

Fastconnect 6700 Firmware by Qualcomm

Fastconnect 6800 Firmware by Qualcomm

Fastconnect 6900 Firmware by Qualcomm

Fastconnect 7800 Firmware by Qualcomm

Flight Rb5 5g Platform Firmware by Qualcomm

Fsm10055 Firmware by Qualcomm

Fsm10056 Firmware by Qualcomm

Home Hub 100 Platform Firmware by Qualcomm

Immersive Home 214 Platform Firmware by Qualcomm

Immersive Home 216 Platform Firmware by Qualcomm

Immersive Home 316 Platform Firmware by Qualcomm

Immersive Home 318 Platform Firmware by Qualcomm

Immersive Home 3210 Platform Firmware by Qualcomm

Immersive Home 326 Platform Firmware by Qualcomm

Ipq5010 Firmware by Qualcomm

Ipq5028 Firmware by Qualcomm

Ipq5300 Firmware by Qualcomm

Ipq5302 Firmware by Qualcomm

Ipq5312 Firmware by Qualcomm

Ipq5332 Firmware by Qualcomm

Ipq6000 Firmware by Qualcomm

Ipq6005 Firmware by Qualcomm

Ipq6010 Firmware by Qualcomm

Ipq6018 Firmware by Qualcomm

Ipq6028 Firmware by Qualcomm

Ipq8064 Firmware by Qualcomm

Ipq8065 Firmware by Qualcomm

Ipq8068 Firmware by Qualcomm

Ipq8070 Firmware by Qualcomm

Ipq8070a Firmware by Qualcomm

Ipq8071 Firmware by Qualcomm

Ipq8071a Firmware by Qualcomm

Ipq8072 Firmware by Qualcomm

Ipq8072a Firmware by Qualcomm

Ipq8074 Firmware by Qualcomm

Ipq8074a Firmware by Qualcomm

Ipq8076 Firmware by Qualcomm

Ipq8076a Firmware by Qualcomm

Ipq8078 Firmware by Qualcomm

Ipq8078a Firmware by Qualcomm

Ipq8173 Firmware by Qualcomm

Ipq8174 Firmware by Qualcomm

Ipq9008 Firmware by Qualcomm

Ipq9554 Firmware by Qualcomm

Ipq9570 Firmware by Qualcomm

Ipq9574 Firmware by Qualcomm

Mdm8207 Firmware by Qualcomm

Mdm9205s Firmware by Qualcomm

Mdm9250 Firmware by Qualcomm

Mdm9628 Firmware by Qualcomm

Mdm9650 Firmware by Qualcomm

Msm8108 Firmware by Qualcomm

Msm8209 Firmware by Qualcomm

Msm8608 Firmware by Qualcomm

Pmp8074 Firmware by Qualcomm

Qam8255p Firmware by Qualcomm

Qam8295p Firmware by Qualcomm

Qam8620p Firmware by Qualcomm

Qam8650p Firmware by Qualcomm

Qam8775p Firmware by Qualcomm

Qamsrv1h Firmware by Qualcomm

Qamsrv1m Firmware by Qualcomm

Qca0000 Firmware by Qualcomm

Qca4004 Firmware by Qualcomm

Qca4024 Firmware by Qualcomm

Qca6174a Firmware by Qualcomm

Qca6310 Firmware by Qualcomm

Qca6320 Firmware by Qualcomm

Qca6335 Firmware by Qualcomm

Qca6391 Firmware by Qualcomm

Qca6420 Firmware by Qualcomm