Linux Kernel up to 6.18.45/7.1.9 DRM Log drm_log_setup_modeset columns infinite loop

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Linux Kernel up to 6.18.45/7.1.9. This issue affects the function drm_log_setup_modeset of the component DRM Log. Such manipulation of the argument columns leads to infinite loop. This vulnerability is documented as CVE-2026-80740. The attack needs to be performed locally. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.45/7.1.9 and classified as problematic. Affected by this issue is the function drm_log_setup_modeset of the component DRM Log. The manipulation of the argument columns with an unknown input leads to a infinite loop vulnerability. Using CWE to declare the problem leads to CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. Impacted is availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: drm/log: Fix infinite loop when scale is too large for display When scale is large enough that scaled_font exceeds the display dimensions, rows or columns become 0. A columns value of 0 causes an infinite loop in drm_log_draw_kmsg_record() because the loop never decrements len. Check for zero rows/columns in drm_log_setup_modeset() and return an error, cleaning up the already allocated buffer to avoid a leak.

The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2026-80740 since 08/26/2026. The exploitation is known to be easy. The attack needs to be approached locally. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 343080 (Linux Distros Unpatched Vulnerability : CVE-2026-80740), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.18.46 or 7.1.10 eliminates this vulnerability. Applying the patch a7d172b27aa3e1ad56e39949bfe4e5caa25fb20b/50ca4dbbaf3eb6deb74daca360b4dabc739a6fa6/f4f2bba28df9b9aaa00262a462139dbbcdc38d9f is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (343080). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 343080
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-80740

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.46/7.1.10
Patch: a7d172b27aa3e1ad56e39949bfe4e5caa25fb20b/50ca4dbbaf3eb6deb74daca360b4dabc739a6fa6/f4f2bba28df9b9aaa00262a462139dbbcdc38d9f

Timelineinfo

08/26/2026 CVE reserved
09/03/2026 +8 days Advisory disclosed
09/03/2026 +0 days VulDB entry created
09/06/2026 +3 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-80740 (🔒)
GCVE (CVE): GCVE-0-2026-80740
GCVE (VulDB): GCVE-100-398336

Entryinfo

Created: 09/03/2026 10:52
Updated: 09/06/2026 06:28
Changes: 09/03/2026 10:52 (60), 09/06/2026 06:28 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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