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Vulnerability · Published Aug 10, 2026 · Assigned by Linux

CVE-2026-68193wifi: mt76: mt7925: drop TXRX_NOTIFY on non-mmio buses

Unrated

In plain English

A security flaw in Linux from Linux. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 89.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: drop TXRX_NOTIFY on non-mmio buses PKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7925_rx_check() and mt7925_queue_rx_skb() dispatch it to mt7925_mac_tx_free() on every bus. mt7925_mac_tx_free() cleans the DMA tx queues with mt76_queue_tx_cleanup(), which calls queue_ops->tx_cleanup(). Only the mmio queue ops implement that callback; on USB it is NULL, so a TXRX_NOTIFY there calls a NULL pointer in the RX worker: BUG: kernel NULL pointer dereference, address: 0000000000000000 RIP: 0010:0x0 Call Trace: mt7925_mac_tx_free+0x58/0x350 [mt7925_common] mt7925_rx_check+0xe2/0x130 [mt7925_common] mt76u_rx_worker+0x1b9/0x620 [mt76_usb] Drop the event on non-mmio buses via mt76_is_mmio(), as in commit 5683e1488aa9 ("wifi: mt76: connac: do not check WED status for non-mmio devices").

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10kernel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-debug6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-debug-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-debug-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-debug-devel-matched6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-debug-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-debug-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-debug-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-devel-matched6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-64k-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-abi-stablelists6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-cross-headers6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-debug6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-debug-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-debug-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-debug-devel-matched6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-debug-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-debug-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-debug-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-debug-uki-virt6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-devel-matched6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-doc6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-headers6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-modules-extra-matched6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-64k6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-64k-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-64k-debug6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-64k-debug-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-64k-debug-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-64k-debug-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-64k-debug-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-64k-debug-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-64k-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-64k-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-64k-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-64k-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-debug6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-debug-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-debug-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-debug-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-debug-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-debug-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-rt-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-tools6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-tools-libs6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-tools-libs-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-uki-virt6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-uki-virt-addons6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-zfcpdump6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-zfcpdump-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-zfcpdump-devel6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-zfcpdump-devel-matched6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-zfcpdump-modules6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-zfcpdump-modules-core6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10kernel-zfcpdump-modules-extra6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10libperf6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10perf6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10python3-perf6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10rtla6.12.0-211.53.1.el10_2ALSA-2026:65334
AlmaLinux:10rv6.12.0-211.53.1.el10_2ALSA-2026:65334
Debian:13linux6.12.101-1DEBIAN-CVE-2026-68193
Debian:14linux7.1.6-1DEBIAN-CVE-2026-68193
Debian:12linux-6.126.12.101-1~deb12u1DEBIAN-CVE-2026-68193
Rocky Linux:10kernel0:6.12.0-211.53.1.el10_2RLSA-2026:65334
Ubuntu:24.04:LTSlinux6.8.0-147.147UBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux7.0.0-38.38UBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-allwinner-5.19no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-aws6.8.0-1067.70UBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-aws7.0.0-1014.14UBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-aws-5.19no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-aws-6.14no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-aws-6.17no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-aws-6.2no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-aws-6.5no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-aws-6.8no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-aws-7.07.0.0-1014.14~24.04.1UBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-azure6.8.0-1071.79UBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-azure7.0.0-1017.17UBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-azure-5.19no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-azure-6.11no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-azure-6.14no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-azure-6.17no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-azure-6.2no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-azure-6.5no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-azure-6.8no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-azure-7.07.0.0-1017.17~24.04.1UBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-azure-fde6.8.0-1069.76UBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-azure-fde7.0.0-1016.16UBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-azure-fde-5.19no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-azure-fde-6.14no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-azure-fde-6.17no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-azure-fde-6.2no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-azure-fde-6.8no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-azure-fde-7.07.0.0-1016.16~24.04.1UBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-azure-nvidiano fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-azure-nvidia-6.14no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-gcp6.8.0-1071.79UBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-gcp7.0.0-1014.14UBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-gcp-5.19no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-gcp-6.11no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-gcp-6.14no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-gcp-6.17no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-gcp-6.2no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-gcp-6.5no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-gcp-6.8no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-gcp-7.07.0.0-1014.14~24.04.1UBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-gke6.8.0-1066.74UBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-gke7.0.0-1008.9UBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-gkeop6.8.0-1052.56UBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-hwe-5.19no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-hwe-6.11no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-hwe-6.14no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-hwe-6.17no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-hwe-6.2no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-hwe-6.5no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-hwe-6.8no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-hwe-7.07.0.0-38.38~24.04.4UBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-ibm6.8.0-1067.68UBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-ibm7.0.0-1015.15UBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-ibm-6.8no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-intel-iot-realtimeno fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-lowlatency6.8.0-147.147.1UBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-lowlatency-hwe-5.19no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-lowlatency-hwe-6.11no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.2no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.5no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-lowlatency-hwe-6.8no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-nvidiano fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-nvidia-6.11no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-nvidia-6.17no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-nvidia-6.2no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-nvidia-6.5no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-nvidia-6.8no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-nvidia-7.07.0.0-1024.25~24.04.1UBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-nvidia-bos7.0.0-2022.23UBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-nvidia-lowlatencyno fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-nvidia-tegrano fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-oem-5.17no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-oem-6.0no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-oem-6.1no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-oem-6.11no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-oem-6.14no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-oem-6.17no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-oem-6.5no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-oem-6.8no fix listedUBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-oem-7.07.0.0-1015.15UBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-oracle6.8.0-1064.67UBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-oracle7.0.0-1013.13UBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-oracle-6.14no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-oracle-6.17no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-oracle-6.5no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-oracle-6.8no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-oracle-7.07.0.0-1013.13~24.04.1UBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-raspino fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-raspi-realtimeno fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-realtimeno fix listedUBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-realtime7.0.0-38.38.1UBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-riscvno fix listedUBUNTU-CVE-2026-68193
Ubuntu:26.04:LTSlinux-riscv7.0.0-38.38.1UBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-riscv-5.19no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-riscv-6.14no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-riscv-6.17no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-riscv-6.5no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-riscv-6.8no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-riscv-7.07.0.0-38.38.1~24.04.1UBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-starfive-5.19no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-starfive-6.2no fix listedUBUNTU-CVE-2026-68193
Ubuntu:22.04:LTSlinux-starfive-6.5no fix listedUBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-vmware6.8.0-1008.8UBUNTU-CVE-2026-68193
Ubuntu:24.04:LTSlinux-xilinxno fix listedUBUNTU-CVE-2026-68193

Affected products (as reported)

VendorProductVersions
Linux Linux c948b5da6bbec742b433138e3e3f9537a85af2e5 – before 0c8c4cd0ca60b45c4b05a39e3769b8473d6836ebc948b5da6bbec742b433138e3e3f9537a85af2e5 – before 9cb72f67e1502aabba51aab9ac04ae7c386ee194c948b5da6bbec742b433138e3e3f9537a85af2e5 – before 9677e86a5f7d680fe280a5f8999bc57353e360d7c948b5da6bbec742b433138e3e3f9537a85af2e5 – before feeff151c83e7f0ffcdedcad5343852d23d1f6e1
Linux Linux 6.7

References