batman-adv: tt: prevent TVLV OOB check overflow

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-72226
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:21:49 UTC
Updated2026-08-17 06:18:23 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: batman-adv: tt: prevent TVLV OOB check overflow A TT unicast TVLV contains the number of VLANs stored in it. This number is an u16 and gets multiplied by the size of the struct batadv_tvlv_tt_vlan_data (8 bytes). The size can therefore overflow the u16 used to store the tt_vlan_len. All additional safety checks to prevent out-of-bounds access of the TVLV buffer are invalid due to this overflow. Using size_t prevents this overflow and ensures that the safety checks compare against the actual buffer requirements.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.007040000 probability, percentile 0.502750000 (date 2026-08-17)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 0de12a4c4847f571d82a9cd96bc633eded41d7c6 git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b d6ff4764ff784ede25f5c83a6f5883a74c93a5ea git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 1898273c5dc8148267ef9f97cd2517a2822350e7 git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 604bd5042fbcd1ab9f7cd98fd847ec017aeede8a git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 7319c0794f91be2734aac695794e7203606b49f8 git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 3256c05d5a9db34346eaf20f52dddde984852d77 git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 6222b443686525cb5a9b6a9cecf23b2e2ab23e2a git Not specified
CNA Linux Linux affected 7ea7b4a142758deaf46c1af0ca9ceca6dd55138b 7a581d9aaba8c82bd6177fa36b2588eea77f6e2b git Not specified
CNA Linux Linux affected 3.13 Not specified
CNA Linux Linux unaffected 3.13 semver Not specified
CNA Linux Linux unaffected 5.10.261 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.212 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.178 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.145 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.97 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.40 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/7319c0794f91be2734aac695794e7203606b49f8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0de12a4c4847f571d82a9cd96bc633eded41d7c6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d6ff4764ff784ede25f5c83a6f5883a74c93a5ea 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7a581d9aaba8c82bd6177fa36b2588eea77f6e2b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/6222b443686525cb5a9b6a9cecf23b2e2ab23e2a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1898273c5dc8148267ef9f97cd2517a2822350e7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/604bd5042fbcd1ab9f7cd98fd847ec017aeede8a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3256c05d5a9db34346eaf20f52dddde984852d77 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report