Linux Kernel up to 6.18.15/6.19.5 EROFS Image denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.18.15/6.19.5 and classified as critical. The impacted element is an unknown function of the component EROFS Image Handler. Executing a manipulation can lead to denial of service. This vulnerability is handled as CVE-2026-43154. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.15/6.19.5. It has been declared as critical. This vulnerability affects an unknown code of the component EROFS Image Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: erofs: fix incorrect early exits in volume label handling Crafted EROFS images containing valid volume labels can trigger incorrect early returns, leading to folio reference leaks. However, this does not cause system crashes or other severe issues.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-43154 since 05/01/2026. There are neither technical details nor an exploit publicly available.

Upgrading to version 6.18.16 or 6.19.6 eliminates this vulnerability. Applying the patch 8d8a878ef60801d867119b3df6a93e2982d62a71/d498bd168494ad4a4bce16192bfb9ce04ca19c9a/3afa4da38802a4cba1c23848a32284e7e57b831b 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 vulnerability database at CERT Bund (WID-SEC-2026-1405). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Debian Linux
  • Oracle Linux
  • Microsoft Azure Linux
  • Open Source Linux Kernel

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Denial of service
CWE: 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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.18.16/6.19.6
Patch: 8d8a878ef60801d867119b3df6a93e2982d62a71/d498bd168494ad4a4bce16192bfb9ce04ca19c9a/3afa4da38802a4cba1c23848a32284e7e57b831b

Timelineinfo

05/01/2026 CVE reserved
05/06/2026 +5 days Advisory disclosed
05/06/2026 +0 days VulDB entry created
05/19/2026 +12 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43154 (🔒)
GCVE (CVE): GCVE-0-2026-43154
GCVE (VulDB): GCVE-100-361456
CERT Bund: WID-SEC-2026-1405 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 05/06/2026 16:47
Updated: 05/19/2026 00:46
Changes: 05/06/2026 16:47 (58), 05/17/2026 14:04 (10), 05/19/2026 00:46 (7)
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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