From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 55D893CF96B for ; Mon, 10 Aug 2026 12:09:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786363796; cv=none; b=gpGH0+yYkqFYONSTaDTNJyqmgq4BuEvTLpSjA527lYQvLAa2O8ppFyDtk27CSkgAjeRrSh+oaBfBd+VC9i7dhgiuLbao1FcFIQV6Thh1jslnyf0SzJIrfR8nplnrhPlaAz6nW80O+vVphrBDqHbari2EInqCqz0i/JSdjUkLK18= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786363796; c=relaxed/simple; bh=+Vt1DkI1D0wrd+OMe7pjx/Gj81AV9xnd0zz/ooVxFMI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=iD02Nv3Npl77MOFYHu2A5Fe3x+8oAr7j87AJJPHkizK5ozYPXTce3lhtBlJl3bpq7hwnl8fTQSH06MfNgsaEkONepNtGxdlRi7BJPCt/Eq8rUuT3CENkJhwFYFcx5guE+j73/lO11fy+Lhrp/2ddYP3FRnX9zRxefWwLAyGHZ3A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=HAbopqdO; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="HAbopqdO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CCD211F000E9; Mon, 10 Aug 2026 12:09:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1786363795; bh=QmswLweewGqGQxr1DDdTLkL5Ars/yXS4QCDhx41bWoA=; h=From:To:Cc:Subject:Date:Reply-To; b=HAbopqdO3yJYxeNJMA0MTEFRQcDWfquPRtPNbM2xVW6y/26MneSfWI70Y1CEOpxmA DAHOajIlNW+uPD8FYDiJsGivdIBVLhR2Q9kmmo1WMC9yYbpqcSmOW0z7TkHFQ6Mv8V WtE7XhclbzMQXl/d+XqmvyKAqpRixShIisp0FyQ8= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2026-68307: wifi: mt76: mt7925: fix crash in reset link replay Date: Mon, 10 Aug 2026 14:00:24 +0200 Message-ID: <2026081031-CVE-2026-68307-54a5@gregkh> X-Mailer: git-send-email 2.55.0 Reply-To: , Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3162; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=MyVVJVHy+NGLdCQWaGbo9joWrmaxhh1f2Ks6HVneJck=; b=owGbwMvMwCRo6H6F97bub03G02pJDFmVe1Z7zuT5E2Gp4bWLs1hN8GdT6/M/9uarZr4WfMo/g d3WrP5WRywLgyATg6yYIsuXbTxH91ccUvQytD0NM4eVCWQIAxenAEzEbyXDgktnW7MusrPvSao5 MW9bSe5UhZeHtBkWTNn1PkFQcGHIimN+Z4/IGXxZUah3CgA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: fix crash in reset link replay During reset recovery, mt7925_vif_connect_iter() replays firmware state for links tracked in mvif->valid_links. After MLO link changes or MCU timeout recovery, the driver bitmap can temporarily contain a link whose mac80211 bss_conf has already gone away. This can pass a NULL bss_conf to mt76_connac_mcu_uni_add_dev(), matching the crash where x1, the second argument, is NULL: pc : mt76_connac_mcu_uni_add_dev+0x8c/0x1f8 [mt76_connac_lib] lr : mt7925_vif_connect_iter+0x9c/0x168 [mt7925_common] x2 : ffffff80a77f6018 x1 : 0000000000000000 x0 : ffffff8099402080 Call trace: mt76_connac_mcu_uni_add_dev+0x8c/0x1f8 [mt76_connac_lib] mt7925_vif_connect_iter+0x9c/0x168 [mt7925_common] mt7925_mac_reset_work+0x264/0x2f8 [mt7925_common] Skip missing bss_conf entries before replaying the link. Non-MLO AP/STA reset replay is unchanged because the helper still returns &vif->bss_conf for the legacy link. The Linux kernel CVE team has assigned CVE-2026-68307 to this issue. Affected and fixed versions =========================== Issue introduced in 6.11 with commit 14061994184df6bb89cba31657ee1db24480e92a and fixed in 6.12.101 with commit d9326796a378f80be5f9fd60983c62fdccdf2f0b Issue introduced in 6.11 with commit 14061994184df6bb89cba31657ee1db24480e92a and fixed in 6.18.42 with commit 95b0cf02731c74e073ef8937f5526bd4442a0326 Issue introduced in 6.11 with commit 14061994184df6bb89cba31657ee1db24480e92a and fixed in 7.1.6 with commit 89d03bda560d635f66d495f37b46a187fd4edfdf Issue introduced in 6.11 with commit 14061994184df6bb89cba31657ee1db24480e92a and fixed in 7.2-rc5 with commit bd8b2ec838184236c3fcbf738a926328836adf12 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-2026-68307 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/mediatek/mt76/mt7925/mac.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/d9326796a378f80be5f9fd60983c62fdccdf2f0b https://git.kernel.org/stable/c/95b0cf02731c74e073ef8937f5526bd4442a0326 https://git.kernel.org/stable/c/89d03bda560d635f66d495f37b46a187fd4edfdf https://git.kernel.org/stable/c/bd8b2ec838184236c3fcbf738a926328836adf12