7.5
HIGH
CVSS 3.1
CVE-2026-72231
batman-adv: tt: avoid request storms during pending request
Overview
Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: avoid request storms during pending request batadv_send_tt_request() allocates a tt_req_node when none exists for the destination originator node. This should prevent that a multiple TT requests are send at the same time to an originator. But if allocation of the send buffer failed, this request must be cleaned up again. But indicator for such a failure is "ret == false". But the actual implementation is checking for "ret == true". The check must be inverted to not loose the information about the TT request directly after it was attempted to be sent out. This should avoid potential request storms.
Details
INFO
Published Date :
Aug. 15, 2026, 6:21 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
Yes !
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Scoring
CVSS Scores
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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 TT request storms caused by incorrect error handling.
- Update the Linux kernel to the latest version.
- Ensure error handling for buffer allocation is correct.
- Verify TT request logic to prevent storms.
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-2026-72231.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72231 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-2026-72231
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-2026-72231 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72231 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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '6055695ea40c64a47e00742c12c99b1a33b4daed', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '21c44a6895f41df811d1c91d10eea194dda2b345', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '5e46c76d9a5062212c4c5f642a5549fd9c057f8a', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '067e413eec2e63c2996909ef55214b3a0eda0be7', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '716f434eb35869e130424331584a91fbb729b9bd', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '6a65ac8a81e903bb4b555c1d13532f5cb0167a4a', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': 'aba1cf21954e64c36afb966b754adad2b0b8aa48', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '27c7d40008231ae4140d35501b60087a9de2d2c3', 'versionType': 'git'}], 'programFiles': ['net/batman-adv/translation-table.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.13', '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/translation-table.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '6055695ea40c64a47e00742c12c99b1a33b4daed', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '21c44a6895f41df811d1c91d10eea194dda2b345', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '5e46c76d9a5062212c4c5f642a5549fd9c057f8a', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '067e413eec2e63c2996909ef55214b3a0eda0be7', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '716f434eb35869e130424331584a91fbb729b9bd', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '6a65ac8a81e903bb4b555c1d13532f5cb0167a4a', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': 'aba1cf21954e64c36afb966b754adad2b0b8aa48', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '27c7d40008231ae4140d35501b60087a9de2d2c3', 'versionType': 'git'}], 'programFiles': ['net/batman-adv/translation-table.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.13', '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/translation-table.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': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '6055695ea40c64a47e00742c12c99b1a33b4daed', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '21c44a6895f41df811d1c91d10eea194dda2b345', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '5e46c76d9a5062212c4c5f642a5549fd9c057f8a', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '067e413eec2e63c2996909ef55214b3a0eda0be7', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '716f434eb35869e130424331584a91fbb729b9bd', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '6a65ac8a81e903bb4b555c1d13532f5cb0167a4a', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': 'aba1cf21954e64c36afb966b754adad2b0b8aa48', 'versionType': 'git'}, {'status': 'affected', 'version': '335fbe0f5d2501b7dd815806aef6fd9bad784eb1', 'lessThan': '27c7d40008231ae4140d35501b60087a9de2d2c3', 'versionType': 'git'}], 'programFiles': ['net/batman-adv/translation-table.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '3.13'}, {'status': 'unaffected', 'version': '0', 'lessThan': '3.13', '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/translation-table.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: avoid request storms during pending request batadv_send_tt_request() allocates a tt_req_node when none exists for the destination originator node. This should prevent that a multiple TT requests are send at the same time to an originator. But if allocation of the send buffer failed, this request must be cleaned up again. But indicator for such a failure is "ret == false". But the actual implementation is checking for "ret == true". The check must be inverted to not loose the information about the TT request directly after it was attempted to be sent out. This should avoid potential request storms. Added Reference https://git.kernel.org/stable/c/067e413eec2e63c2996909ef55214b3a0eda0be7 Added Reference https://git.kernel.org/stable/c/21c44a6895f41df811d1c91d10eea194dda2b345 Added Reference https://git.kernel.org/stable/c/27c7d40008231ae4140d35501b60087a9de2d2c3 Added Reference https://git.kernel.org/stable/c/5e46c76d9a5062212c4c5f642a5549fd9c057f8a Added Reference https://git.kernel.org/stable/c/6055695ea40c64a47e00742c12c99b1a33b4daed Added Reference https://git.kernel.org/stable/c/6a65ac8a81e903bb4b555c1d13532f5cb0167a4a Added Reference https://git.kernel.org/stable/c/716f434eb35869e130424331584a91fbb729b9bd Added Reference https://git.kernel.org/stable/c/aba1cf21954e64c36afb966b754adad2b0b8aa48
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.