CVE-2026-64094
batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface Without rtnl_lock held, a hardif might be retrieved as primary interface of a meshif, but then (while operating on this interface) getting decoupled from the mesh interface. In this case, the meshif still exists but the pointer from the primary hardif to the meshif is set to NULL. The mesh_iface must be checked first to be non-NULL before continuing to send an ARP request using meshif.
INFO
Published Date :
July 19, 2026, 4:17 p.m.
Last Modified :
July 19, 2026, 4:17 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-64094
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.
No affected product recoded yet
Solution
- Update the Linux kernel to the latest version.
- Apply specific patches addressing batman-adv NULL pointer dereference.
- Reboot the system after applying updates.
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-2026-64094.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64094 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-2026-64094
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-2026-64094 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64094 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.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 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': '23721387c409087fd3b97e274f34d3ddc0970b74', 'lessThan': '4f6266735a0ba6a568b6d4c9fa51c33a5a7f2d70', 'versionType': 'git'}, {'status': 'affected', 'version': '23721387c409087fd3b97e274f34d3ddc0970b74', 'lessThan': '53cb3511f6eda37d3bd923545fdba6013b6d7bb7', 'versionType': 'git'}, {'status': 'affected', 'version': '23721387c409087fd3b97e274f34d3ddc0970b74', 'lessThan': 'efb62458c94db1fe3a287e7e89c31b0cfb03f938', 'versionType': 'git'}, {'status': 'affected', 'version': '23721387c409087fd3b97e274f34d3ddc0970b74', 'lessThan': '2a8c9e86529156c62d9187b9ed9454c31665ad33', 'versionType': 'git'}, {'status': 'affected', 'version': '23721387c409087fd3b97e274f34d3ddc0970b74', 'lessThan': '0f3ebd7bb417aabc44853cc7c2a184ebb0e05b45', 'versionType': 'git'}, {'status': 'affected', 'version': '23721387c409087fd3b97e274f34d3ddc0970b74', 'lessThan': '6921a7683ae9ad0208d829e71f725a9e25ccff49', 'versionType': 'git'}, {'status': 'affected', 'version': '23721387c409087fd3b97e274f34d3ddc0970b74', 'lessThan': '555b8d3f5c313d81d46274fd0976352dafc80124', 'versionType': 'git'}, {'status': 'affected', 'version': '23721387c409087fd3b97e274f34d3ddc0970b74', 'lessThan': 'f80d3d98d2ff78d9e2fe5d68b1f45948c4f7bd24', 'versionType': 'git'}], 'programFiles': ['net/batman-adv/bridge_loop_avoidance.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.5'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.5', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.259', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.210', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.176', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.143', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.93', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.34', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.11', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/batman-adv/bridge_loop_avoidance.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface Without rtnl_lock held, a hardif might be retrieved as primary interface of a meshif, but then (while operating on this interface) getting decoupled from the mesh interface. In this case, the meshif still exists but the pointer from the primary hardif to the meshif is set to NULL. The mesh_iface must be checked first to be non-NULL before continuing to send an ARP request using meshif. Added Reference https://git.kernel.org/stable/c/0f3ebd7bb417aabc44853cc7c2a184ebb0e05b45 Added Reference https://git.kernel.org/stable/c/2a8c9e86529156c62d9187b9ed9454c31665ad33 Added Reference https://git.kernel.org/stable/c/4f6266735a0ba6a568b6d4c9fa51c33a5a7f2d70 Added Reference https://git.kernel.org/stable/c/53cb3511f6eda37d3bd923545fdba6013b6d7bb7 Added Reference https://git.kernel.org/stable/c/555b8d3f5c313d81d46274fd0976352dafc80124 Added Reference https://git.kernel.org/stable/c/6921a7683ae9ad0208d829e71f725a9e25ccff49 Added Reference https://git.kernel.org/stable/c/efb62458c94db1fe3a287e7e89c31b0cfb03f938 Added Reference https://git.kernel.org/stable/c/f80d3d98d2ff78d9e2fe5d68b1f45948c4f7bd24