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Vulnerability record · CVE-2026-31511 · published 22 April 2026

CVE-2026-31511: Linux kernel use after free vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fix dangling pointer on mgmt_add_adv_patterns_monitor_complete This fixes the condition checking so mgmt_pending_valid is executed whenever status != -ECANCELED otherwise calling mgmt_pending_free(cmd) would kfree(cmd) without unlinking it from the list first, leaving a dangling pointer. Any subsequent list traversal (e.g., mgmt_pending_foreach during __mgmt_power_off, or another mgmt_pending_valid call) would dereference freed memory.

7.8 CVSS 3.1 High EPSS 0.18% · top 93.7% CWE-416 · Use after free
7.8CVSS 3.1 base score
0.18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: Fix dangling pointer on mgmt_add_adv_patterns_monitor_complete This fixes the condition checking so mgmt_pending_valid is executed whenever status != -ECANCELED otherwise calling mgmt_pending_free(cmd) would kfree(cmd) without unlinking it from the list first, leaving a dangling pointer. Any subsequent list traversal (e.g., mgmt_pending_foreach during __mgmt_power_off, or another mgmt_pending_valid call) would dereference freed memory.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/2074dfffad76981ca451cb7fc98703d04ac562fe
https://git.kernel.org/stable/c/340666172cf747de58c283d2eef1f335f050538b Patch
https://git.kernel.org/stable/c/3a89c33deffb3cb7877a7ea2e50734cd12b064f2 Patch
https://git.kernel.org/stable/c/5f5fa4cd35f707344f65ce9e225b6528691dbbaa Patch
https://git.kernel.org/stable/c/bafec9325d4de26b6c49db75b5d5172de652aae0 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-31511), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.