CVE-2025-21936

Bluetooth: Add check for mgmt_alloc_skb() in mgmt_device_connected()

MEDIUM
5.5
CVSS Score
Published: April 1, 2025 at 03:41 PM UTC
Updated: June 17, 2026 at 08:44 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: Add check for mgmt_alloc_skb() in mgmt_device_connected() Add check for the return value of mgmt_alloc_skb() in mgmt_device_connected() to prevent null pointer dereference.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.17 ≤ v < 6.1.1315.17 ≤ v < 6.12.195.17 ≤ v < 6.13.75.17 ≤ v < 6.145.17 ≤ v < 6.6.836.13 ≤ v < 6.13.76.2 ≤ v < 6.6.836.7 ≤ v < 6.12.196.14 rc16.14 rc26.14 rc36.14 rc46.14 rc5e96741437ef0a5d18144e790ac894397efda0924
Vendor states this is fixed in 7841180342c9a0fd97d54f3e62c7369309b5cd84 (fixed)
Vendor states this is fixed in 7d39387886ffe220323cbed5c155233c3276926b (fixed)
Vendor states this is fixed in bdb1805c248e9694dbb3ffa8867cef2e52cf7261 (fixed)
Vendor states this is fixed in d8df010f72b8a32aaea393e36121738bb53ed905 (fixed)
Vendor states this is fixed in dc516e66fb28c61b248b393e2ddd63bd7f104969 (fixed)
Vendor states this is fixed in 5.17 (unaffected)
Vendor states this is fixed in 6.1.131 (unaffected)
Vendor states this is fixed in 6.12.19 (unaffected)
Vendor states this is fixed in 6.13.7 (unaffected)
Vendor states this is fixed in 6.14 (unaffected)
Vendor states this is fixed in 6.6.83 (unaffected)

References (6)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7841180342c9a0fd97d54f3e62c7369309b5cd84
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/7d39387886ffe220323cbed5c155233c3276926b
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/bdb1805c248e9694dbb3ffa8867cef2e52cf7261
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d8df010f72b8a32aaea393e36121738bb53ed905
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/dc516e66fb28c61b248b393e2ddd63bd7f104969
Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-476

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