High 7.8Published May 5, 2026

CVE-2026-43059Bluetooth: MGMT: Fix list corruption and UAF in command complete handlers

Updated under an hour ago (Oct 27, 2026, 12:30 AM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fix list corruption and UAF in command complete handlers Commit 302a1f674c00 ("Bluetooth: MGMT: Fix possible UAFs") introduced mgmt_pending_valid(), which not only validates the pending command but also unlinks it from the pending list if it is valid. This change in semantics requires updates to several completion handlers to avoid list corruption and memory safety issues. This patch addresses two left-over issues from the aforementioned rework: 1. In mgmt_add_adv_patterns_monitor_complete(), mgmt_pending_remove() is replaced with mgmt_pending_free() in the success path. Since mgmt_pending_valid() already unlinks the command at the beginning of the function, calling mgmt_pending_remove() leads to a double list_del() and subsequent list corruption/kernel panic. 2. In set_mesh_complete(), the use of mgmt_pending_foreach() in the error path is removed. Since the current command is already unlinked by mgmt_pending_valid(), this foreach loop would incorrectly target other pending mesh commands, potentially freeing them while they are still being processed concurrently (leading to UAFs). The redundant mgmt_cmd_status() is also simplified to use cmd->opcode directly.

CVSS: 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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: Modified
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 0b60eb04b8524e1b4b3f07fea0d16fda9a677d9a before 3d6de8467236cd763ddc7d06127689bdfbfbd8ff; from d71b98f253b079cbadc83266383f26fe7e9e103b before 695b45b2262fcb5e71bed1175aad59c72f92aa78; from 302a1f674c00dd5581ab8e493ef44767c5101aab before b5c5e96f3b0a5003c3ff98ebb33e59afec51dd77; from 302a1f674c00dd5581ab8e493ef44767c5101aab before 02023ff760cc104a5d86a82ef5b8dd89098ad78d; 302a1f674c00dd5581ab8e493ef44767c5101aab builds before 17f89341cb4281d1da0e2fb0de5406ab7c4e25ef; 87a1f16f07c6c43771754075e08f45b41d237421; from 6.6.140 before 6.6.160; from 6.12.59 before 6.12.78; and 1 more ranges	CNA record
linux linux_kernel linux:linux_kernel	from 6.6.140 before 6.7; from 6.12.59 before 6.12.78; from 6.16.10 before 6.17; from 6.17.1 before 6.18.20; from 6.19 before 6.19.10; 6.17; 7.0; 7.0; and 2 more ranges	NVD

References

References

https://git.kernel.org/stable/c/3d6de8467236cd763ddc7d06127689bdfbfbd8ff
https://git.kernel.org/stable/c/695b45b2262fcb5e71bed1175aad59c72f92aa78	patch
https://git.kernel.org/stable/c/b5c5e96f3b0a5003c3ff98ebb33e59afec51dd77	patch
https://git.kernel.org/stable/c/02023ff760cc104a5d86a82ef5b8dd89098ad78d	patch
https://git.kernel.org/stable/c/17f89341cb4281d1da0e2fb0de5406ab7c4e25ef	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.