CVE-2026-68126
mac802154: hold an interface reference across the scan worker
Description
In the Linux kernel, the following vulnerability has been resolved: mac802154: hold an interface reference across the scan worker mac802154_scan_worker() captures the scanning sub-interface under RCU and then keeps dereferencing sdata->dev after rcu_read_unlock() and outside the rtnl -- in the failure traces, in mac802154_transmit_beacon_req() (skb->dev = sdata->dev), and in the end_scan cleanup. Nothing keeps that netdev alive across the worker iteration. A concurrent DEL_INTERFACE or PHY removal can unregister the interface once the worker drops the rtnl between its two drv_set_channel() sections. unregister_netdevice() frees the netdev asynchronously from netdev_run_todo() with the rtnl already dropped, so neither holding the rtnl nor the per-PHY IEEE802154_IS_SCANNING flag prevents a stale worker iteration from dereferencing the freed netdev -- a KASAN slab-use-after-free, reachable by racing TRIGGER_SCAN against DEL_INTERFACE (both CAP_NET_ADMIN). Pin the netdev with netdev_hold() while the RCU read lock is still held, and release it at every worker exit.
INFO
Published Date :
Aug. 10, 2026, 1:19 p.m.
Last Modified :
Aug. 17, 2026, 5:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Pin the netdev with netdev_hold() while RCU read lock is held.
- Release the netdev hold at every worker exit.
- Ensure interface reference is held across the scan worker.
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-2026-68126.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68126 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-2026-68126
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-2026-68126 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68126 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': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': 'bd7110f0caa32426140ff302a209c53294ef2cfd', 'versionType': 'git'}, {'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': 'dd4754194a706163294b6141460101b99082c8c7', 'versionType': 'git'}, {'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': '59c1d5463b7bc5a2cdaae27108d1dfd67edc7d1b', 'versionType': 'git'}, {'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': '5f303f622f6bb8907c405e5123a0ab0f70fb0065', 'versionType': 'git'}, {'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': '234e5e898b713bc0b3a631b6f002897f43d046c8', 'versionType': 'git'}], 'programFiles': ['net/mac802154/scan.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.3'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.3', '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': ['net/mac802154/scan.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': 'bd7110f0caa32426140ff302a209c53294ef2cfd', 'versionType': 'git'}, {'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': 'dd4754194a706163294b6141460101b99082c8c7', 'versionType': 'git'}, {'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': '59c1d5463b7bc5a2cdaae27108d1dfd67edc7d1b', 'versionType': 'git'}, {'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': '5f303f622f6bb8907c405e5123a0ab0f70fb0065', 'versionType': 'git'}, {'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': '234e5e898b713bc0b3a631b6f002897f43d046c8', 'versionType': 'git'}], 'programFiles': ['net/mac802154/scan.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.3'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.3', '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': ['net/mac802154/scan.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': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': 'bd7110f0caa32426140ff302a209c53294ef2cfd', 'versionType': 'git'}, {'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': 'dd4754194a706163294b6141460101b99082c8c7', 'versionType': 'git'}, {'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': '59c1d5463b7bc5a2cdaae27108d1dfd67edc7d1b', 'versionType': 'git'}, {'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': '5f303f622f6bb8907c405e5123a0ab0f70fb0065', 'versionType': 'git'}, {'status': 'affected', 'version': '57588c71177f0bfc08509c2c3a9bfe32850c0786', 'lessThan': '234e5e898b713bc0b3a631b6f002897f43d046c8', 'versionType': 'git'}], 'programFiles': ['net/mac802154/scan.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.3'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.3', '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': ['net/mac802154/scan.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: mac802154: hold an interface reference across the scan worker mac802154_scan_worker() captures the scanning sub-interface under RCU and then keeps dereferencing sdata->dev after rcu_read_unlock() and outside the rtnl -- in the failure traces, in mac802154_transmit_beacon_req() (skb->dev = sdata->dev), and in the end_scan cleanup. Nothing keeps that netdev alive across the worker iteration. A concurrent DEL_INTERFACE or PHY removal can unregister the interface once the worker drops the rtnl between its two drv_set_channel() sections. unregister_netdevice() frees the netdev asynchronously from netdev_run_todo() with the rtnl already dropped, so neither holding the rtnl nor the per-PHY IEEE802154_IS_SCANNING flag prevents a stale worker iteration from dereferencing the freed netdev -- a KASAN slab-use-after-free, reachable by racing TRIGGER_SCAN against DEL_INTERFACE (both CAP_NET_ADMIN). Pin the netdev with netdev_hold() while the RCU read lock is still held, and release it at every worker exit. Added Reference https://git.kernel.org/stable/c/234e5e898b713bc0b3a631b6f002897f43d046c8 Added Reference https://git.kernel.org/stable/c/59c1d5463b7bc5a2cdaae27108d1dfd67edc7d1b Added Reference https://git.kernel.org/stable/c/5f303f622f6bb8907c405e5123a0ab0f70fb0065 Added Reference https://git.kernel.org/stable/c/bd7110f0caa32426140ff302a209c53294ef2cfd Added Reference https://git.kernel.org/stable/c/dd4754194a706163294b6141460101b99082c8c7