Medium 5.5Published May 28, 2026

CVE-2026-46231batman-adv: bla: put backbone reference on failed claim hash insert

Updated under an hour ago (Oct 26, 2026, 4:20 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: put backbone reference on failed claim hash insert When batadv_bla_add_claim() fails to insert a new claim into the hash, it leaked a reference to the backbone_gw for which the claim was intended. Call batadv_backbone_gw_put() on the error path to release the reference and avoid leaking the backbone_gw object.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Analyzed
Record last updated: Jun 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 3db0decf1185357d6ab2256d0dede1ca9efda03d before 6c8b68a7ed667a63aa603ba4d3a7088be143007e; from 3db0decf1185357d6ab2256d0dede1ca9efda03d before 769f413d374ff2b6ff6d8d8c37b4c1178e6cdf14; from 3db0decf1185357d6ab2256d0dede1ca9efda03d before 2888c9a154123db0254ae4fb9bea570c7e1f2e06; from 3db0decf1185357d6ab2256d0dede1ca9efda03d before 65419eb4259a26a3cd3f56fa0e3b3c113bf8c256; from 3db0decf1185357d6ab2256d0dede1ca9efda03d before fd0ca034c1e71ca7613cde9dd892836b2c2831bd; 3db0decf1185357d6ab2256d0dede1ca9efda03d builds before 0baf4b659cdc7305cf685b5a5d60f9e3816ab5d0; from 3db0decf1185357d6ab2256d0dede1ca9efda03d before 7cccf4eb4f96d3c3af91a00b7a9caa652439542e; from 3db0decf1185357d6ab2256d0dede1ca9efda03d before ba9d20ee9076dac32c371116bacbe72480eb356c; and 4 more ranges	CNA record
linux linux_kernel linux:linux_kernel	from 3.16.39 before 3.17; from 4.4.217 before 4.5; from 4.7.1 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.90; from 6.13 before 6.18.32; and 5 more ranges	NVD

References

References

https://git.kernel.org/stable/c/6c8b68a7ed667a63aa603ba4d3a7088be143007e	patch
https://git.kernel.org/stable/c/769f413d374ff2b6ff6d8d8c37b4c1178e6cdf14	patch
https://git.kernel.org/stable/c/2888c9a154123db0254ae4fb9bea570c7e1f2e06	patch
https://git.kernel.org/stable/c/65419eb4259a26a3cd3f56fa0e3b3c113bf8c256	patch
https://git.kernel.org/stable/c/fd0ca034c1e71ca7613cde9dd892836b2c2831bd	patch
https://git.kernel.org/stable/c/0baf4b659cdc7305cf685b5a5d60f9e3816ab5d0	patch
https://git.kernel.org/stable/c/7cccf4eb4f96d3c3af91a00b7a9caa652439542e	patch
https://git.kernel.org/stable/c/ba9d20ee9076dac32c371116bacbe72480eb356c	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.