Advisory [CVE-2026-64506] correct drop logic for malformed AMPDU frames
This security Red Hat Linux advisory covers CVE-2026-64506.
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Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: correct drop logic for malformed AMPDU frames The previous commit aims to fix issue caused by malformed AMPDU frames. But the drop logic fails to deal with the first AMPDU packet paired with certain range of sequence number, and leads to unexpected packet drop.
It is more likely to encounter this failure when there are busy traffic during rekey process and could lead to disconnection from the AP. Fix this by adding a initial state judgement and only reset status during pairwise rekey.
A flaw was found in the Realtek 802.11ac wireless driver (rtw89) within the Linux kernel. A remote attacker, within adjacent network range, could send specially crafted malformed Aggregated MAC Protocol Data Unit (AMPDU) frames.
This incorrect handling of frames, particularly during rekey processes, leads to unexpected packet drops. The consequence is a denial of service (DoS), causing affected clients to disconnect from the wireless access point.
Red Hat severity: not rated. Weakness: CWE-841.
Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9 as not affected.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · medium-confidence parse· fetched 1 month ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists. Confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 1 month ago·verify at source
Mitigation
The source record does not include mitigation steps. That does not mean no fix exists. Read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 1 month ago·verify at source
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