CVE-2026-64255
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
63/100
Published: 2026-07-24
Modified: 2026-11-08
First seen: 2026-11-08
Status: active
Attack Surface
Adjacent
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Adjacent
AC:
Low
PR:
None
UI:
None
S:
Unchanged
C:
High
I:
High
A:
High
Description
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().
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| linux | linux_kernel | 6.4 – 6.18.38 |
References & Advisories (3)
Patch
Patch
Patch