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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-74409

wifi: rtw89: add bounds check on firmware mac_id in link lookup

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: add bounds check on firmware mac_id in link lookup The mac_id field in RX descriptors is 8 bits wide (0-255), but assoc_link_on_macid[] has only RTW89_MAX_MAC_ID_NUM (128) entries. While the driver currently assigns mac_id values below 128, the descriptor value comes from firmware and is not validated before use as an array index. Add a defensive bounds check in rtw89_assoc_link_rcu_dereference() to guard against out-of-range firmware values.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 144c6cd24b3556e6e7a14271cee57a42ebf97450 to < ad445de67359f24088d4305c05fbd7e34c4e35e3affected
  • 144c6cd24b3556e6e7a14271cee57a42ebf97450 to < 920101305e7601a33b9e01019f4ca526af2526aeaffected
  • 144c6cd24b3556e6e7a14271cee57a42ebf97450 to < 6d88244bb129755acca696f9227200f4a2d106a6affected

Linux Linux

Default version status: affected

  • 6.14affected
  • 0 to < 6.14unaffected
  • 6.18.40 to ≤ 6.18.*unaffected
  • 7.1.5 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References