Linux Kernel rtw89 WiFi Driver Division-by-Zero Fix
CVE-2026-43267 Published on May 6, 2026
wifi: rtw89: fix potential zero beacon interval in beacon tracking
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.
Products Associated with CVE-2026-43267
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Affected Versions
Linux:- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below 1260bee01493126cf9c872b6ca2af261173baa6d is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below e00c9a4ec84c0bb067833b34202f457badbbc1c1 is affected.
- Version 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 and below eb57be32f438c57c88d6ce756101c1dfbcc03bba is affected.
- Version 6.18.16, <= 6.18.* is unaffected.
- Version 6.19.6, <= 6.19.* is unaffected.
- Version 7.0, <= * is unaffected.