CVE-2026-64406

CVE CVE-2026-64406EUVD EUVD-2026-48950Published 2026-07-25T08:50:47.000ZLast changed 2026-08-05T12:41:42.000ZCVSS 8.0

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: fix UAF in bt_accept_dequeue() bt_accept_get() takes a temporary reference before dropping the accept queue lock. bt_accept_dequeue() currently drops that reference before bt_accept_unlink(), leaving only the queue reference. bt_accept_unlink() drops the queue reference. The subsequent sock_hold() therefore accesses freed memory if it was the final reference, as observed by KASAN during listening L2CAP socket cleanup. Retain the temporary queue-walk reference through unlink and hand it to the caller on success. Drop it explicitly on the closed and not-yet-connected paths.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 6.18.34 <6.18.39; added1213395071470a900cc845a042fb51882a6 <26168db1ce5a9766cde021b18e590a101c056614; patch: 7.1.4; 6.1.175 <6.1.178; 6.12.92 <6.12.96; patch: 6.12.96; 7.1; 5d86d2f1b4d9a508c441d3e45277ae1a73cfed57 <c66a95e60b65d876a927123b0ed36bd6177d9ca6; patch: 0; 751de6ec671fe75ad9cf65a0638d2a06b6a5984d <c0577c55219be42b6ea2ea8db11e85bfab6f4e8d; patch: 6.18.39; patch: 6.1.178; patch: 5.15.212; a5ca86a6097a8b030ca3226cd300b17ed330f966; 5.15.210 <5.15.212; 7.0.11 <7.1; patch: 6.6.145; 7eebd4c2c86f573af87ff165d08a83432eb0b919 <0a98ff4e7b867f72fbb4e1237d81e9fa02ded0a0; ab1513597c6cf17cd1ad2a21e3b045421b48e022 <50c662bdcd51b03033a0abed6716bfd377ba1049; 407217734835d21d4e0105ebf347860dc1806f88 <96ad400d5132eb333f28f6f1e2d58f0728ca9547; patch: 7.2-rc3; ab1513597c6cf17cd1ad2a21e3b045421b48e022 <4bd0b274054f2679f28b70222b607bb0afc3ab9a; 87c543e2f78d0871f271df92dab98901bbd5b6f5 <6303ed4bbe0095f4cc195225479bf506e010d1db; 6.6.142 <6.6.145; patch: 5.10.261; 5.10.259 <5.10.261

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

Does this concern one of your customers?

This page cannot answer that — it does not know your estate. Whoever has recorded their environments gets the answer the morning after publication, together with a paragraph they can forward to the customer unedited.

Try it for 28 days

Patchlage reports hits and suspected hits. About everything else this system says nothing — neither this page nor the situation report ever claims that an estate is safe.