PT-2026-64370 · Linux · Linux

CVE-2026-64255 · Publicado 2026-07-24 · Atualizado 2026-07-24

NVD

In the Linux kernel, the following vulnerability has been resolved:

wifi: iwlwifi: mld: validate sta mask before ffs() in BA session handlers

Three BA session handlers use ffs(ba data->sta mask) - 1 to derive a station ID without checking that sta mask is non-zero. When sta mask is zero, ffs() returns 0 and the subtraction wraps to 0xFFFFFFFF, causing an out-of-bounds access on fw id to link sta[].

Add WARN ON ONCE(!ba data->sta mask) guards before each ffs() call, consistent with the existing check in iwl mld ampdu rx start().

Identificadores relacionados

CVE-2026-64255

Produtos afetados

Linux

Referências · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-64255 · Nota de Segurança
• https://git.kernel.org/stable/c/f056fc2b927448d37eca6b6cacc3d1b0f67b20d2 · Nota
• https://git.kernel.org/stable/c/1de92789ce31e46fa7e7d8e89c90b19cdb1c103b · Nota
• https://git.kernel.org/stable/c/fe7f339f63c9dc4ca546ed7ac38ba4bb3a99dcfc · Nota