Linux Kernel up to 6.5.3 register_framebuffer reference count

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k1.16

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.5.3. The impacted element is the function register_framebuffer. This manipulation causes reference count. The identification of this vulnerability is CVE-2023-53314. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.5.3. It has been declared as critical. Affected by this vulnerability is the function register_framebuffer. The manipulation with an unknown input leads to a reference count vulnerability. The CWE definition for the vulnerability is CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: fbdev/ep93xx-fb: Do not assign to struct fb_info.dev Do not assing the Linux device to struct fb_info.dev. The call to register_framebuffer() initializes the field to the fbdev device. Drivers should not override its value. Fixes a bug where the driver incorrectly decreases the hardware device's reference counter and leaks the fbdev device. v2: * add Fixes tag (Dan)

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2023-53314 since 09/16/2025. The exploitation appears to be difficult. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 265589 (Linux Distros Unpatched Vulnerability : CVE-2023-53314), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 4.14.326, 4.19.295, 5.4.257, 5.10.195, 5.15.132, 6.1.54 or 6.5.4 eliminates this vulnerability. Applying the patch ffdf2b020db717853167391a3a8d912e13428fa6/1c6ff2a7c593db851f23e31ace2baf557ea9d0ff/8ffa40ff64aa43a9a28fcf209b48d86a3e0f4972/4aade6c9100a3537788b6a9c7ac481037d19efdf/309c27162afea79b3c7f8747bb650faf6923b639/f83c1b13f8154e0284448912756d0a351a1a602a/0517fc5a71333b315164736bbd32608894fbb872/f90a0e5265b60cdd3c77990e8105f79aa2fac994 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (265589) and CERT Bund (WID-SEC-2025-2077). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Reference count
CWE: CWE-911 / CWE-664
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: 265589
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-53314

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 4.14.326/4.19.295/5.4.257/5.10.195/5.15.132/6.1.54/6.5.4
Patch: ffdf2b020db717853167391a3a8d912e13428fa6/1c6ff2a7c593db851f23e31ace2baf557ea9d0ff/8ffa40ff64aa43a9a28fcf209b48d86a3e0f4972/4aade6c9100a3537788b6a9c7ac481037d19efdf/309c27162afea79b3c7f8747bb650faf6923b639/f83c1b13f8154e0284448912756d0a351a1a602a/0517fc5a71333b315164736bbd32608894fbb872/f90a0e5265b60cdd3c77990e8105f79aa2fac994

Timelineinfo

09/16/2025 Advisory disclosed
09/16/2025 +0 days CVE reserved
09/16/2025 +0 days VulDB entry created
12/27/2025 +102 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-53314 (🔒)
GCVE (CVE): GCVE-0-2023-53314
GCVE (VulDB): GCVE-100-324529
CERT Bund: WID-SEC-2025-2077 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 09/16/2025 20:39
Updated: 12/27/2025 08:27
Changes: 09/16/2025 20:39 (58), 09/20/2025 20:46 (2), 10/21/2025 05:19 (7), 12/02/2025 02:51 (11), 12/27/2025 08:27 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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