CVE-2026-43267
Division by Zero in Linux Kernel WiFi Driver
Publication date: 2026-05-06
Last updated on: 2026-05-06
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux_kernel | wifi | 0 |
| linux | linux_kernel | * |
| linux_kernel | wifi | *-* |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
Attack-Flow Graph
AI Powered Q&A
How can this vulnerability impact me? :
If the beacon interval is zero, it could cause a division by zero error in the wifi driver, which may lead to system instability or crashes. This could disrupt wireless network functionality on affected Linux systems, potentially causing loss of connectivity or degraded performance.
Can you explain this vulnerability to me?
This vulnerability exists in the Linux kernel's wifi driver rtw89. During fuzz testing, it was found that the beacon interval value (bss_conf->beacon_int) could be zero. Since this value is used in calculations, a zero value could cause a division by zero error, potentially leading to instability or crashes. The fix sets a default beacon interval value of 100 TU (time units) if the interval is zero to prevent this issue.