CVE-2026-80601
batman-adv: gw: acquire ethernet header only after skb realloc
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: gw: acquire ethernet header only after skb realloc The pskb_may_pull() called by batadv_get_vid() 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.
INFO
Published Date :
Aug. 28, 2026, 8:16 a.m.
Last Modified :
Aug. 29, 2026, 7:16 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Update the Linux kernel.
- Reassign pointers after buffer reallocation.
- Apply the "batman-adv: gw: acquire ethernet header only after skb realloc" patch.
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-2026-80601.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-80601 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-2026-80601
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-2026-80601 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-80601 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.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 29, 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 -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 28, 2026
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: batman-adv: gw: acquire ethernet header only after skb realloc The pskb_may_pull() called by batadv_get_vid() 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. Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/80xxx/CVE-2026-80601.json">CVE-2026-80601</a> Added Reference https://git.kernel.org/stable/c/2760b38222c8828b075802342fe3b91eb823d542 Added Reference https://git.kernel.org/stable/c/6c37f1166549c999ccd164b0cb6462d1ae68f8f6 Added Reference https://git.kernel.org/stable/c/77880a3be88d378d60cc1e8f8ec70430e2ed0518 Added Reference https://git.kernel.org/stable/c/916dac5f2944f63f07f7b501acbea6737dbbed0e Added Reference https://git.kernel.org/stable/c/afac8096bde4948e3caa7e4dd733867cfbd3018e Added Reference https://git.kernel.org/stable/c/b79884a5567bf788fb76c30832467cf6a56f3c0d Added Reference https://git.kernel.org/stable/c/e3f4325e35dd6e76b80665f3510738ce34819753 Added Reference https://git.kernel.org/stable/c/e6b43acd34b219b807e65096ce207b087942779d