CVE-2026-64506: wifi: rtw89: correct drop logic for malformed AMPDU frames
Greg Kroah-Hartman <[email protected]> Sat, 25 Jul 2026 10:52:03 +0200
| Newsgroups | org.kernel.vger.linux-cve-announce |
|---|---|
| Message-ID | <2026072554-CVE-2026-64506-6cf3@gregkh> |
From: Greg Kroah-Hartman <[email protected]> Description =========== 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. The Linux kernel CVE team has assigned CVE-2026-64506 to this issue. Affected and fixed versions =========================== Issue introduced in 7.1 with commit bda294ed0ed05ada2a832b19a55dd4a6fa72b1a1 and fixed in 7.1.4 with commit 994994cfadaf1fd362dea9b8d9d633f85dc1b3c3 Issue introduced in 7.1 with commit bda294ed0ed05ada2a832b19a55dd4a6fa72b1a1 and fixed in 7.2-rc1 with commit 63ccdfac8677387dfdbd9d4336089e9823280704 Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-64506 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/net/wireless/realtek/rtw89/core.c drivers/net/wireless/realtek/rtw89/mac80211.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/994994cfadaf1fd362dea9b8d9d633f85dc1b3c3 https://git.kernel.org/stable/c/63ccdfac8677387dfdbd9d4336089e9823280704