8.8
HIGH
CVSS 3.1
CVE-2026-72235
batman-adv: retrieve ethhdr after potential skb realloc on RX
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: retrieve ethhdr after potential skb realloc on RX pskb_may_pull() in batadv_interface_rx() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free. This was done correctly for the VLAN header but missed for the ethernet header which is later used for the TT and AP isolation handling.
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
Fix an use-after-free vulnerability in the Linux kernel by reassigning pointers after buffer reallocation.
- Update the Linux kernel to include the fix.
- Ensure ethernet header pointers are correctly reassigned after buffer reallocation.
- Test the fix to confirm resolution of the use-after-free vulnerability.
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-2026-72235.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72235 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-2026-72235
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-2026-72235 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72235 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:A/AC:L/PR:N/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': '6e189f14d1ea28db212b9d70a02131a7ce518012', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'a1820344b180cb55af748f102bc536b5c93164db', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '6abf73589bed3f27ee240c08108feb72bed0b9c6', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'f19259395b44af67f3c274e34237c295b526b859', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '2cefa5141cab8ec1e4b24cf585958b13f2e3049d', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '85a71a81854e0e191ad0e533eabb4eff54866feb', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'b031fc97e1993d29d6c3a0e86a99140528cf31e8', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '035e1fed892d3d06002a73ff73668f618a514644', '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-rc2', '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': '6e189f14d1ea28db212b9d70a02131a7ce518012', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'a1820344b180cb55af748f102bc536b5c93164db', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '6abf73589bed3f27ee240c08108feb72bed0b9c6', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'f19259395b44af67f3c274e34237c295b526b859', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '2cefa5141cab8ec1e4b24cf585958b13f2e3049d', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '85a71a81854e0e191ad0e533eabb4eff54866feb', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'b031fc97e1993d29d6c3a0e86a99140528cf31e8', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '035e1fed892d3d06002a73ff73668f618a514644', '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': '6e189f14d1ea28db212b9d70a02131a7ce518012', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'a1820344b180cb55af748f102bc536b5c93164db', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '6abf73589bed3f27ee240c08108feb72bed0b9c6', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'f19259395b44af67f3c274e34237c295b526b859', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '2cefa5141cab8ec1e4b24cf585958b13f2e3049d', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '85a71a81854e0e191ad0e533eabb4eff54866feb', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': 'b031fc97e1993d29d6c3a0e86a99140528cf31e8', 'versionType': 'git'}, {'status': 'affected', 'version': 'c6c8fea29769d998d94fcec9b9f14d4b52b349d3', 'lessThan': '035e1fed892d3d06002a73ff73668f618a514644', '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-rc2', '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: retrieve ethhdr after potential skb realloc on RX pskb_may_pull() in batadv_interface_rx() could reallocate the buffer behind the skb. Variables which were pointing to the old buffer need to be reassigned to avoid an use-after-free. This was done correctly for the VLAN header but missed for the ethernet header which is later used for the TT and AP isolation handling. Added Reference https://git.kernel.org/stable/c/035e1fed892d3d06002a73ff73668f618a514644 Added Reference https://git.kernel.org/stable/c/2cefa5141cab8ec1e4b24cf585958b13f2e3049d Added Reference https://git.kernel.org/stable/c/6abf73589bed3f27ee240c08108feb72bed0b9c6 Added Reference https://git.kernel.org/stable/c/6e189f14d1ea28db212b9d70a02131a7ce518012 Added Reference https://git.kernel.org/stable/c/85a71a81854e0e191ad0e533eabb4eff54866feb Added Reference https://git.kernel.org/stable/c/a1820344b180cb55af748f102bc536b5c93164db Added Reference https://git.kernel.org/stable/c/b031fc97e1993d29d6c3a0e86a99140528cf31e8 Added Reference https://git.kernel.org/stable/c/f19259395b44af67f3c274e34237c295b526b859
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.