7.8
HIGH
CVSS 3.1
CVE-2026-72232
batman-adv: ensure minimal ethernet header on TX
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: ensure minimal ethernet header on TX As documented in commit 8bd67ebb50c0 ("net: bridge: xmit: make sure we have at least eth header len bytes"), it is possible by for a local user with eBPF TC hook access to attach a tc filter which truncates the packet and redirects to an batadv interface. But the code assumes that at least ETH_HLEN bytes are available and thus might read outside of the available buffer. The batadv_interface_tx() must therefore always check itself if enough data is available for the ethernet header and don't rely on min_header_len.
Details
INFO
Published Date :
Aug. 15, 2026, 6:21 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
Apply kernel updates to prevent out-of-bounds reads when handling batadv TX.
- Update the Linux kernel to the patched version.
- Verify the batadv_interface_tx function checks buffer availability.
- Limit eBPF TC hook access where possible.
- Review packet handling logic for robustness.
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-2026-72232.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72232 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-2026-72232
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-2026-72232 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72232 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 Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '58799078afebd5115e052bf69ad6697f9759dd6f', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '38cd10b0aeec755d89f78722a2b83f4088ff0cb0', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '811fea37620f2097955d95ce81cfdba03fd30f1b', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'e6640923afee619d9fa82b07394dc9498e202304', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '6b4f521e01257387906f8b969ad3450d8208d4e2', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '9e16b6751a8206de0b865d99bb02771e6751d12d', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'dbeb4145d9778f922f459935da9a027750765a69', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '49df66b7993c80b80c7eb9a84ba5b3410c8296a0', 'versionType': 'git'}], 'programFiles': ['net/batman-adv/mesh-interface.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.38'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.38', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/batman-adv/mesh-interface.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '58799078afebd5115e052bf69ad6697f9759dd6f', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '38cd10b0aeec755d89f78722a2b83f4088ff0cb0', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '811fea37620f2097955d95ce81cfdba03fd30f1b', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'e6640923afee619d9fa82b07394dc9498e202304', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '6b4f521e01257387906f8b969ad3450d8208d4e2', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '9e16b6751a8206de0b865d99bb02771e6751d12d', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'dbeb4145d9778f922f459935da9a027750765a69', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '49df66b7993c80b80c7eb9a84ba5b3410c8296a0', 'versionType': 'git'}], 'programFiles': ['net/batman-adv/mesh-interface.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.38'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.38', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/batman-adv/mesh-interface.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 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': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '58799078afebd5115e052bf69ad6697f9759dd6f', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '38cd10b0aeec755d89f78722a2b83f4088ff0cb0', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '811fea37620f2097955d95ce81cfdba03fd30f1b', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'e6640923afee619d9fa82b07394dc9498e202304', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '6b4f521e01257387906f8b969ad3450d8208d4e2', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '9e16b6751a8206de0b865d99bb02771e6751d12d', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'dbeb4145d9778f922f459935da9a027750765a69', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '49df66b7993c80b80c7eb9a84ba5b3410c8296a0', 'versionType': 'git'}], 'programFiles': ['net/batman-adv/mesh-interface.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2.6.38'}, {'status': 'unaffected', 'version': '0', 'lessThan': '2.6.38', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.10.261', 'versionType': 'semver', 'lessThanOrEqual': '5.10.*'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/batman-adv/mesh-interface.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: batman-adv: ensure minimal ethernet header on TX As documented in commit 8bd67ebb50c0 ("net: bridge: xmit: make sure we have at least eth header len bytes"), it is possible by for a local user with eBPF TC hook access to attach a tc filter which truncates the packet and redirects to an batadv interface. But the code assumes that at least ETH_HLEN bytes are available and thus might read outside of the available buffer. The batadv_interface_tx() must therefore always check itself if enough data is available for the ethernet header and don't rely on min_header_len. Added Reference https://git.kernel.org/stable/c/38cd10b0aeec755d89f78722a2b83f4088ff0cb0 Added Reference https://git.kernel.org/stable/c/49df66b7993c80b80c7eb9a84ba5b3410c8296a0 Added Reference https://git.kernel.org/stable/c/58799078afebd5115e052bf69ad6697f9759dd6f Added Reference https://git.kernel.org/stable/c/6b4f521e01257387906f8b969ad3450d8208d4e2 Added Reference https://git.kernel.org/stable/c/811fea37620f2097955d95ce81cfdba03fd30f1b Added Reference https://git.kernel.org/stable/c/9e16b6751a8206de0b865d99bb02771e6751d12d Added Reference https://git.kernel.org/stable/c/dbeb4145d9778f922f459935da9a027750765a69 Added Reference https://git.kernel.org/stable/c/e6640923afee619d9fa82b07394dc9498e202304
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.