CVE-2026-68195
wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses PKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7615_rx_check() and mt7615_queue_rx_skb() dispatch it to mt7615_mac_tx_free() on every bus. mt7615_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 the mt7663 USB and SDIO buses it is NULL, so a TXRX_NOTIFY there calls a NULL pointer in the RX worker. Same defect as the mt7921 and mt7925 patches in this series. 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").
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 17, 2026, 5:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Apply the Linux kernel patch for mt7615.
- Ensure TXRX_NOTIFY is handled on MMIO buses only.
- Update the device driver for non-MMIO buses.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-68195.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68195 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-68195
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-68195 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68195 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': 'f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5', 'versionType': 'git'}, {'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': '88c98ef247a3126fea9bbbda953a18a2f36c3ea7', 'versionType': 'git'}, {'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': 'ab4d213393e846baa6437497f94dda7553cbeda7', 'versionType': 'git'}, {'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': 'b2ab73b8123ce6cf2bc32634bfee4928676ffa66', 'versionType': 'git'}, {'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': '39afc46c0243d10b7795e6e6cf4ae91f41732120', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/mediatek/mt76/mt7615/mac.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/wireless/mediatek/mt76/mt7615/mac.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': 'f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5', 'versionType': 'git'}, {'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': '88c98ef247a3126fea9bbbda953a18a2f36c3ea7', 'versionType': 'git'}, {'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': 'ab4d213393e846baa6437497f94dda7553cbeda7', 'versionType': 'git'}, {'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': 'b2ab73b8123ce6cf2bc32634bfee4928676ffa66', 'versionType': 'git'}, {'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': '39afc46c0243d10b7795e6e6cf4ae91f41732120', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/mediatek/mt76/mt7615/mac.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/wireless/mediatek/mt76/mt7615/mac.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 10, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': 'f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5', 'versionType': 'git'}, {'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': '88c98ef247a3126fea9bbbda953a18a2f36c3ea7', 'versionType': 'git'}, {'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': 'ab4d213393e846baa6437497f94dda7553cbeda7', 'versionType': 'git'}, {'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': 'b2ab73b8123ce6cf2bc32634bfee4928676ffa66', 'versionType': 'git'}, {'status': 'affected', 'version': 'eb99cc95c3b6513b495c4839ac4917206705f657', 'lessThan': '39afc46c0243d10b7795e6e6cf4ae91f41732120', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/mediatek/mt76/mt7615/mac.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.8'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.8', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/net/wireless/mediatek/mt76/mt7615/mac.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7615: drop TXRX_NOTIFY on non-mmio buses PKT_TYPE_TXRX_NOTIFY is an mmio-only event, but mt7615_rx_check() and mt7615_queue_rx_skb() dispatch it to mt7615_mac_tx_free() on every bus. mt7615_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 the mt7663 USB and SDIO buses it is NULL, so a TXRX_NOTIFY there calls a NULL pointer in the RX worker. Same defect as the mt7921 and mt7925 patches in this series. 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"). Added Reference https://git.kernel.org/stable/c/39afc46c0243d10b7795e6e6cf4ae91f41732120 Added Reference https://git.kernel.org/stable/c/88c98ef247a3126fea9bbbda953a18a2f36c3ea7 Added Reference https://git.kernel.org/stable/c/ab4d213393e846baa6437497f94dda7553cbeda7 Added Reference https://git.kernel.org/stable/c/b2ab73b8123ce6cf2bc32634bfee4928676ffa66 Added Reference https://git.kernel.org/stable/c/f2a72f47c5fb4ba6887e85bbe809d7e5b318d9d5