CVE-2026-46231

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

MEDIUM
5.5
CVSS Score
Published: May 28, 2026 at 09:40 AM UTC
Updated: June 17, 2026 at 10:53 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≥ 3.16.39v ≥ 4.4.2173.16.39 ≤ v < 3.174.4.217 ≤ v < 4.54.7 ≤ v < 5.10.2584.7 ≤ v < 5.15.2094.7 ≤ v < 6.1.1754.7 ≤ v < 6.12.904.7 ≤ v < 6.18.324.7 ≤ v < 6.6.1404.7 ≤ v < 7.0.94.7 ≤ v < 7.14.7.1 ≤ v < 5.10.2585.11 ≤ v < 5.15.2095.16 ≤ v < 6.1.1756.13 ≤ v < 6.18.326.19 ≤ v < 7.0.96.2 ≤ v < 6.6.1406.7 ≤ v < 6.12.903.16.393db0decf1185357d6ab2256d0dede1ca9efda03d3fdd337ac0b277a1f40aa73b35283520f426e5174.4.2174.7485eedfabc2aefac8f09f98a82ba1c1e3e202a6d7.1 rc17.1 rc27.1 rc3
Vendor states this is fixed in 0baf4b659cdc7305cf685b5a5d60f9e3816ab5d0 (fixed)
Vendor states this is fixed in 2888c9a154123db0254ae4fb9bea570c7e1f2e06 (fixed)
Vendor states this is fixed in 65419eb4259a26a3cd3f56fa0e3b3c113bf8c256 (fixed)
Vendor states this is fixed in 6c8b68a7ed667a63aa603ba4d3a7088be143007e (fixed)
Vendor states this is fixed in 769f413d374ff2b6ff6d8d8c37b4c1178e6cdf14 (fixed)
Vendor states this is fixed in 7cccf4eb4f96d3c3af91a00b7a9caa652439542e (fixed)
Vendor states this is fixed in ba9d20ee9076dac32c371116bacbe72480eb356c (fixed)
Vendor states this is fixed in fd0ca034c1e71ca7613cde9dd892836b2c2831bd (fixed)
Affected range stops below 3.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.5, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 4.7 (unaffected)
Vendor states this is fixed in 5.10.258 (unaffected)
Vendor states this is fixed in 5.15.209 (unaffected)
Vendor states this is fixed in 6.1.175 (unaffected)
Vendor states this is fixed in 6.12.90 (unaffected)
Vendor states this is fixed in 6.18.32 (unaffected)
Vendor states this is fixed in 6.6.140 (unaffected)
Vendor states this is fixed in 7.0.9 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
NVD-CWE-noinfo

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