high CVSS 7.8 EPSS <0.1%

CVE-2024-46729·Kernel vulnerability

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix incorrect size calculation for loop [WHY] fe_clk_en has size of 5 but sizeof(fe_clk_en) has byte size 20 which is lager than the array size. [HOW] Divide byte size 20 by its element size. This fixes 2 OVERRUN issues reported by Coverity.

Severity
high
Software
Kernel
Fixed in
6.10.9
Published

How likely is exploitation

FIRST's Exploit Prediction Scoring System puts the probability of this CVE being exploited in the next 30 days at <0.1% — higher than 7% of all published CVEs. EPSS is an independent forecast of exploitation, not a severity rating: it says nothing about how much damage a successful attack does, which is what a CVSS score measures.

Read the two together. CVE-2024-46729 scores 7.8 on CVSS, so a successful attack would be serious — but at <0.1%, almost nobody is currently attempting it. That is a different situation from a flaw under mass exploitation, and it is usually the difference between patching on your next maintenance window and patching tonight.

Affected versions

From: 4.15

Until: 6.10.9

Fixed in: 6.10.9

How to fix this CVE

Update your Linux kernel to version 6.10.9 or later to resolve a memory bounds calculation error in the AMD display driver that could lead to buffer overruns. This vulnerability affects kernel versions 4.15 through 6.10.8 and requires immediate patching to prevent potential privilege escalation or system crashes from local attackers.

sudo dnf update kernel kernel-devel

Defensia detects this vulnerability

How to check if you are affected

  1. Check kernel version: uname -r — Compare against the fixed version 6.10.9; any version 4.15 to 6.10.8 is vulnerable
  2. Verify AMD GPU driver is loaded: lspci | grep -i amd && lsmod | grep -i amdgpu — If present, the vulnerable code path is active
  3. Search kernel logs for display/DRM errors: sudo journalctl -k | grep -i 'amd\|display\|drm' — Look for segmentation faults or buffer overflow warnings
  4. Confirm patch applied after update: uname -r should return 6.10.9 or later; verify with sudo apt-cache policy linux-image-generic or sudo dnf info kernel

FAQ

What is CVE-2024-46729?

This vulnerability is a buffer overrun flaw in the AMD display driver subsystem of the Linux kernel, caused by incorrect size calculation when iterating over clock enable arrays. Local attackers with sufficient privileges could trigger memory corruption leading to denial of service or privilege escalation.

Is CVE-2024-46729 being actively exploited?

No — this CVE is not listed in CISA's Known Exploited Vulnerabilities catalog and no public exploits are currently available. However, the local attack vector and high CVSS score warrant prompt patching.

What versions of Kernel are affected by CVE-2024-46729?

Linux kernel versions 4.15 through 6.10.8 are vulnerable. Systems running kernel 6.10.9 or later are patched.

How do I check if my server is vulnerable to CVE-2024-46729?

Run 'uname -r' to display your kernel version. If it falls between 4.15 and 6.10.8 inclusive, and your system has AMD GPUs with the amdgpu driver loaded (check with 'lsmod | grep amdgpu'), your system is vulnerable.

Does Defensia detect CVE-2024-46729?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If Linux kernel is installed on a monitored server, CVE-2024-46729 will appear in your dashboard with remediation steps.

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References

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