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CVE Vulnerability Details :
CVE-2026-53071
PUBLISHED
More InfoOfficial Page
Assigner-Linux
Assigner Org ID-416baaa9-dc9f-4396-8d5f-8c081fb06d67
View Known Exploited Vulnerability (KEV) details
Published At-24 Jun, 2026 | 16:30
Updated At-30 Jun, 2026 | 12:09
Rejected At-
▼CVE Numbering Authority (CNA)
Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp l2cap_ecred_reconf_rsp() calls l2cap_chan_del() without holding l2cap_chan_lock(). Every other l2cap_chan_del() caller in the file acquires the lock first. A remote BLE device can send a crafted L2CAP ECRED reconfiguration response to corrupt the channel list while another thread is iterating it. Add l2cap_chan_hold() and l2cap_chan_lock() before l2cap_chan_del(), and l2cap_chan_unlock() and l2cap_chan_put() after, matching the pattern used in l2cap_ecred_conn_rsp() and l2cap_conn_del().

Affected Products
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • net/bluetooth/l2cap_core.c
Default Status
unaffected
Versions
Affected
  • From 15f02b91056253e8cdc592888f431da0731337b8 before 96dca51715d86559ed6ed8028e5445cecb80f3ae (git)
  • From 15f02b91056253e8cdc592888f431da0731337b8 before 330b20ec97916961ee0e6c29c06bc0fa7c96e64c (git)
  • From 15f02b91056253e8cdc592888f431da0731337b8 before 0ccd75c51f620374086f359e906917676e699a1c (git)
  • From 15f02b91056253e8cdc592888f431da0731337b8 before 77a853aec710b2fdf41fa298ea3cbc9a4358f917 (git)
  • From 15f02b91056253e8cdc592888f431da0731337b8 before fe1188abdae9b7a8199dcdfcf9244d5e5d61eb14 (git)
  • From 15f02b91056253e8cdc592888f431da0731337b8 before dc89961b76f12aff47124c1df4bdb32a080f4d0c (git)
  • From 15f02b91056253e8cdc592888f431da0731337b8 before 5501d055a1ce3c747141e3955ba8cf034d193f3e (git)
  • From 15f02b91056253e8cdc592888f431da0731337b8 before 42776497cdbc9a665b384a6dcb85f0d4bd927eab (git)
Vendor
Linux Kernel Organization, IncLinux
Product
Linux
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Program Files
  • net/bluetooth/l2cap_core.c
Default Status
affected
Versions
Affected
  • 5.7
Unaffected
  • From 0 before 5.7 (semver)
  • From 5.10.258 through 5.10.* (semver)
  • From 5.15.209 through 5.15.* (semver)
  • From 6.1.175 through 6.1.* (semver)
  • From 6.6.141 through 6.6.* (semver)
  • From 6.12.91 through 6.12.* (semver)
  • From 6.18.33 through 6.18.* (semver)
  • From 7.0.10 through 7.0.* (semver)
  • From 7.1 through * (original_commit_for_fix)
Metrics
VersionBase scoreBase severityVector
3.18.8HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 8.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://git.kernel.org/stable/c/96dca51715d86559ed6ed8028e5445cecb80f3ae
N/A
https://git.kernel.org/stable/c/330b20ec97916961ee0e6c29c06bc0fa7c96e64c
N/A
https://git.kernel.org/stable/c/0ccd75c51f620374086f359e906917676e699a1c
N/A
https://git.kernel.org/stable/c/77a853aec710b2fdf41fa298ea3cbc9a4358f917
N/A
https://git.kernel.org/stable/c/fe1188abdae9b7a8199dcdfcf9244d5e5d61eb14
N/A
https://git.kernel.org/stable/c/dc89961b76f12aff47124c1df4bdb32a080f4d0c
N/A
https://git.kernel.org/stable/c/5501d055a1ce3c747141e3955ba8cf034d193f3e
N/A
https://git.kernel.org/stable/c/42776497cdbc9a665b384a6dcb85f0d4bd927eab
N/A
Hyperlink: https://git.kernel.org/stable/c/96dca51715d86559ed6ed8028e5445cecb80f3ae
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/330b20ec97916961ee0e6c29c06bc0fa7c96e64c
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/0ccd75c51f620374086f359e906917676e699a1c
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/77a853aec710b2fdf41fa298ea3cbc9a4358f917
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/fe1188abdae9b7a8199dcdfcf9244d5e5d61eb14
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/dc89961b76f12aff47124c1df4bdb32a080f4d0c
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/5501d055a1ce3c747141e3955ba8cf034d193f3e
Resource: N/A
Hyperlink: https://git.kernel.org/stable/c/42776497cdbc9a665b384a6dcb85f0d4bd927eab
Resource: N/A
▼Authorized Data Publishers (ADP)
kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp

A flaw was found in the Linux kernel's Bluetooth Logical Link Control and Adaptation Protocol (L2CAP) implementation. A remote Bluetooth Low Energy (BLE) device can exploit this by sending a specially crafted L2CAP ECRED reconfiguration response. This can lead to the corruption of the channel list, potentially causing a Denial of Service (DoS) by making the system unstable or unresponsive. The vulnerability is due to a missing channel lock when a channel is deleted.

Affected Products
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 10
CPEs
  • cpe:/o:redhat:enterprise_linux:10
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8
CPEs
  • cpe:/o:redhat:enterprise_linux:8
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9
CPEs
  • cpe:/o:redhat:enterprise_linux:9
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 6
CPEs
  • cpe:/o:redhat:enterprise_linux:6
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 7
CPEs
  • cpe:/o:redhat:enterprise_linux:7
Default Status
unaffected
Problem Types
TypeCWE IDDescription
CWECWE-414Missing Lock Check
Type: CWE
CWE ID: CWE-414
Description: Missing Lock Check
Metrics
VersionBase scoreBase severityVector
3.17.0HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Version: 3.1
Base score: 7.0
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Red Hat severity rating
value:
Important
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Reported to Red Hat.2026-06-24 00:00:00
Made public.2026-06-24 00:00:00
Event: Reported to Red Hat.
Date: 2026-06-24 00:00:00
Event: Made public.
Date: 2026-06-24 00:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
https://access.redhat.com/security/cve/CVE-2026-53071
vdb-entry
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2492458
issue-tracking
x_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53071.json
x_sadp-csaf-vex
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-53071
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2492458
Resource:
issue-tracking
x_refsource_REDHAT
Hyperlink: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53071.json
Resource:
x_sadp-csaf-vex
Details not found