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CVE-2026-68311
wifi: mt76: mt7925: guard link STA in decap offload
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: guard link STA in decap offload mt7925_sta_set_decap_offload() iterates over the vif valid_links mask when updating decap offload state for an MLO station. The station may not have a link STA for every valid link of the vif, so mt792x_sta_to_link() can return NULL for a link that belongs to the vif but not to the station. The function currently dereferences mlink before checking whether the link WCID is ready. If mlink is NULL, setting or clearing MT_WCID_FLAG_HDR_TRANS dereferences a NULL pointer. Skip links without a station link before touching mlink->wcid.

Details
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
Impact
Affected Products

The following products are affected by CVE-2026-68311 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Solution
The Linux kernel's mt76 driver has a NULL pointer dereference vulnerability.
  • Update the Linux kernel to the latest patched version.
  • Apply vendor-specific security updates for the mt76 driver.
  • Skip links without station links before accessing driver data.
References
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-2026-68311.

URL Resource
https://git.kernel.org/stable/c/1e608cae1ba0b4a600b752efa223fd2be376b143
https://git.kernel.org/stable/c/96ea44f2269f30364cffa054ee3a87e595bef0d4
https://git.kernel.org/stable/c/d86883f7e8f03a5b81b4e59f2c0b6c05f79e01fd
https://git.kernel.org/stable/c/f1ee53e08fdd2906e90c6a6d71e1368fcd52bfc3
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-68311 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-2026-68311 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-2026-68311 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-68311 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': 'b859ad65309a5f1654e8b284de582831fc88e2d8', 'lessThan': '1e608cae1ba0b4a600b752efa223fd2be376b143', 'versionType': 'git'}, {'status': 'affected', 'version': 'b859ad65309a5f1654e8b284de582831fc88e2d8', 'lessThan': 'f1ee53e08fdd2906e90c6a6d71e1368fcd52bfc3', 'versionType': 'git'}, {'status': 'affected', 'version': 'b859ad65309a5f1654e8b284de582831fc88e2d8', 'lessThan': 'd86883f7e8f03a5b81b4e59f2c0b6c05f79e01fd', 'versionType': 'git'}, {'status': 'affected', 'version': 'b859ad65309a5f1654e8b284de582831fc88e2d8', 'lessThan': '96ea44f2269f30364cffa054ee3a87e595bef0d4', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/mediatek/mt76/mt7925/main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.11'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.11', 'versionType': 'semver'}, {'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/mt7925/main.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'b859ad65309a5f1654e8b284de582831fc88e2d8', 'lessThan': '1e608cae1ba0b4a600b752efa223fd2be376b143', 'versionType': 'git'}, {'status': 'affected', 'version': 'b859ad65309a5f1654e8b284de582831fc88e2d8', 'lessThan': 'f1ee53e08fdd2906e90c6a6d71e1368fcd52bfc3', 'versionType': 'git'}, {'status': 'affected', 'version': 'b859ad65309a5f1654e8b284de582831fc88e2d8', 'lessThan': 'd86883f7e8f03a5b81b4e59f2c0b6c05f79e01fd', 'versionType': 'git'}, {'status': 'affected', 'version': 'b859ad65309a5f1654e8b284de582831fc88e2d8', 'lessThan': '96ea44f2269f30364cffa054ee3a87e595bef0d4', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/mediatek/mt76/mt7925/main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.11'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.11', 'versionType': 'semver'}, {'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/mt7925/main.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': 'b859ad65309a5f1654e8b284de582831fc88e2d8', 'lessThan': '1e608cae1ba0b4a600b752efa223fd2be376b143', 'versionType': 'git'}, {'status': 'affected', 'version': 'b859ad65309a5f1654e8b284de582831fc88e2d8', 'lessThan': 'f1ee53e08fdd2906e90c6a6d71e1368fcd52bfc3', 'versionType': 'git'}, {'status': 'affected', 'version': 'b859ad65309a5f1654e8b284de582831fc88e2d8', 'lessThan': 'd86883f7e8f03a5b81b4e59f2c0b6c05f79e01fd', 'versionType': 'git'}, {'status': 'affected', 'version': 'b859ad65309a5f1654e8b284de582831fc88e2d8', 'lessThan': '96ea44f2269f30364cffa054ee3a87e595bef0d4', 'versionType': 'git'}], 'programFiles': ['drivers/net/wireless/mediatek/mt76/mt7925/main.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.11'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.11', 'versionType': 'semver'}, {'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/mt7925/main.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: guard link STA in decap offload mt7925_sta_set_decap_offload() iterates over the vif valid_links mask when updating decap offload state for an MLO station. The station may not have a link STA for every valid link of the vif, so mt792x_sta_to_link() can return NULL for a link that belongs to the vif but not to the station. The function currently dereferences mlink before checking whether the link WCID is ready. If mlink is NULL, setting or clearing MT_WCID_FLAG_HDR_TRANS dereferences a NULL pointer. Skip links without a station link before touching mlink->wcid.
    Added Reference https://git.kernel.org/stable/c/1e608cae1ba0b4a600b752efa223fd2be376b143
    Added Reference https://git.kernel.org/stable/c/96ea44f2269f30364cffa054ee3a87e595bef0d4
    Added Reference https://git.kernel.org/stable/c/d86883f7e8f03a5b81b4e59f2c0b6c05f79e01fd
    Added Reference https://git.kernel.org/stable/c/f1ee53e08fdd2906e90c6a6d71e1368fcd52bfc3
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
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