CVE-2024-26969 – This CVE-2024-26969 is a buffer overflow vulner... (How to Fix)

Q: What is the severity of CVE-2024-26969?

CVE-2024-26969 has a CVSS score of 5.5 (MEDIUM). This CVE-2024-26969 is a buffer overflow vulnerability in the Linux kernel's Qualcomm GCC IPQ8074 clock driver. Missing termination in frequency table arrays could allow out-of-bounds memory access when the tables are traversed. This affects Linux systems using the affected Qualcomm IPQ8074-based hardware.

📋 TL;DR

This CVE-2024-26969 is a buffer overflow vulnerability in the Linux kernel's Qualcomm GCC IPQ8074 clock driver. Missing termination in frequency table arrays could allow out-of-bounds memory access when the tables are traversed. This affects Linux systems using the affected Qualcomm IPQ8074-based hardware.

💻 Affected Systems

Products:

Linux kernel with Qualcomm GCC IPQ8074 clock driver

Versions: Linux kernel versions containing the vulnerable driver code before the fix commits

Operating Systems: Linux distributions using affected kernel versions

Default Config Vulnerable: ⚠️ Yes

Notes: Requires hardware with Qualcomm IPQ8074 SoC and the specific clock driver enabled in kernel configuration.

📦 What is this software?

Debian Linux by Debian

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Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

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Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

Linux Kernel by Linux

The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...

Learn more about Linux Kernel →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Kernel panic, system crash, or potential arbitrary code execution in kernel context leading to complete system compromise.

🟠

Likely Case

System instability, kernel crashes, or denial of service on affected hardware.

🟢

If Mitigated

Limited impact with proper kernel hardening and memory protection features enabled.

🌐 Internet-Facing: LOW - Requires local access or specific hardware conditions to trigger.

🏢 Internal Only: MEDIUM - Could be exploited by malicious local users or through other vulnerabilities to escalate privileges.

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: UNKNOWN

Unauthenticated Exploit: ✅ No

Complexity: MEDIUM

Exploitation requires triggering specific clock frequency operations on affected hardware. No public exploits known at this time.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Linux kernel versions with commits 1040ef5ed95d6fd2628bad387d78a61633e09429 or other listed stable commits

Vendor Advisory: https://git.kernel.org/stable/c/1040ef5ed95d6fd2628bad387d78a61633e09429

Restart Required: Yes

Instructions:

1. Update Linux kernel to version containing the fix commits. 2. Rebuild kernel if using custom kernel. 3. Reboot system to load patched kernel.

🔧 Temporary Workarounds

Disable affected clock driver

linux

Remove or disable the gcc-ipq8074 clock driver module if not required

modprobe -r gcc_ipq8074
echo 'blacklist gcc_ipq8074' >> /etc/modprobe.d/blacklist.conf

🧯 If You Can't Patch

Restrict local user access to systems with affected hardware
Implement strict kernel module loading policies and monitoring

🔍 How to Verify

Check if Vulnerable:

Check if kernel has gcc_ipq8074 driver loaded: lsmod | grep gcc_ipq8074 and check kernel version against patched versions

Check Version:

uname -r

Verify Fix Applied:

Verify kernel version includes fix commits: grep -r '1040ef5ed95d6fd2628bad387d78a61633e09429' /usr/src/linux/

📡 Detection & Monitoring

Log Indicators:

Kernel oops messages
System crash/panic logs
Unexpected kernel module errors

Network Indicators:

None - local vulnerability only

SIEM Query:

source="kernel" AND ("Oops" OR "panic" OR "gcc_ipq8074")

📊 Metadata

CVE ID: CVE-2024-26969

CVSS v3 Score: 5.5 (MEDIUM)

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

CWE: CWE-129

Published: May 1, 2024

Last Updated: December 23, 2024

🔗 References

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🔗 Related Vulnerabilities

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