Linux Kernel up to 6.18.15/6.19.5 wifi divide by zero

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

Summaryinfo

A vulnerability classified as critical was found in Linux Kernel up to 6.18.15/6.19.5. This impacts an unknown function of the component wifi. Executing a manipulation can lead to divide by zero. This vulnerability is registered as CVE-2026-43267. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 6.18.15/6.19.5 and classified as critical. This vulnerability affects an unknown function of the component wifi. The manipulation with an unknown input leads to a divide by zero vulnerability. The CWE definition for the vulnerability is CWE-369. The product divides a value by zero. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: fix potential zero beacon interval in beacon tracking During fuzz testing, it was discovered that bss_conf->beacon_int might be zero, which could result in a division by zero error in subsequent calculations. Set a default value of 100 TU if the interval is zero to ensure stability.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2026-43267 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 1260bee01493126cf9c872b6ca2af261173baa6d/e00c9a4ec84c0bb067833b34202f457badbbc1c1/eb57be32f438c57c88d6ce756101c1dfbcc03bba 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.

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

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

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

CVSSv2info

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

Exploitinginfo

Class: Divide by zero
CWE: CWE-369 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
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: 1260bee01493126cf9c872b6ca2af261173baa6d/e00c9a4ec84c0bb067833b34202f457badbbc1c1/eb57be32f438c57c88d6ce756101c1dfbcc03bba

Timelineinfo

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

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43267 (🔒)
GCVE (CVE): GCVE-0-2026-43267
GCVE (VulDB): GCVE-100-361480

Entryinfo

Created: 05/06/2026 16:54
Changes: 05/06/2026 16:54 (58)
Complete: 🔍
Cache ID: 216::103

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