CVE-2026-43059

HIGH EPSS 2.3%
Published May 5, 20261mo ago · Modified Jun 17, 20262w ago
7.8 CVSS 3.1
High
Find Similar
Published May 5, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

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 Details

Base Score
7.8
Exploitability
1.8
Impact
5.9
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
2.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 10

VendorProductVersionRange
linuxlinux_kernel*≥6.6.140  –  <6.7
linuxlinux_kernel*≥6.12.59  –  <6.12.78
linuxlinux_kernel*≥6.16.10  –  <6.17
linuxlinux_kernel*≥6.17.1  –  <6.18.20
linuxlinux_kernel*≥6.19  –  <6.19.10
linuxlinux_kernel6.17any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any
linuxlinux_kernel7.0any

References 4

  • git.kernel.org https://git.kernel.org/stable/c/02023ff760cc104a5d86a82ef5b8dd89098ad78d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/17f89341cb4281d1da0e2fb0de5406ab7c4e25ef
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/695b45b2262fcb5e71bed1175aad59c72f92aa78
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b5c5e96f3b0a5003c3ff98ebb33e59afec51dd77
    Patch

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/02023ff760cc104a5d86a82ef5b8dd89098ad78d
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/17f89341cb4281d1da0e2fb0de5406ab7c4e25ef
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/695b45b2262fcb5e71bed1175aad59c72f92aa78
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/b5c5e96f3b0a5003c3ff98ebb33e59afec51dd77
    Patch