CVE-2026-46212

In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: prevent use-after-free when deleting claims When batadv_bla_del_backbone_claims() removes all claims for a backbone, it does this by dropping the link entry in the hash list. This list entry itself was one of the references which need to be dropped at the same time via batadv_claim_put(). But the batadv_claim_put() must not be done before the last access to the claim object in this function. Otherwise the claim might be freed already by the batadv_claim_release() function before the list entry was dropped.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/00155f336a5e8b1006d2ca9ae7ad8fc4a44bb401	Patch
https://git.kernel.org/stable/c/0cc9847c64cb6e61118bc78c9187c8209a7197fa	Patch
https://git.kernel.org/stable/c/1d4b241482d9025c537afb3c7c8419c72c0e0c82	Patch
https://git.kernel.org/stable/c/368449e467d5f1e2c2e987bf2bd57000ba75e10b	Patch
https://git.kernel.org/stable/c/4ae1709a314060a196981b344610d023ea841e57	Patch
https://git.kernel.org/stable/c/6c5dc6d68e6ba7f0224a757a39ed52fcdb54d472	Patch
https://git.kernel.org/stable/c/a1a99837bb6169cfb9187abaa2005e8f12079426	Patch
https://git.kernel.org/stable/c/b88c865dcf6e9f20bfe66a360d4b62941ef769b8	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc1::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc2::::::
	cpe:2.3:o:linux:linux_kernel:7.1:rc3::::::

History

No history.

Information

Published : 2026-05-28 10:16

Updated : 2026-06-17 10:53

NVD link : CVE-2026-46212

Mitre link : CVE-2026-46212

CVE.ORG link : CVE-2026-46212

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-416

Use After Free

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