High 8.8Published Jun 24, 2026

CVE-2026-53071Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp

Updated under an hour ago (Oct 28, 2026, 4:10 AM ET)

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It affects Linux and 4 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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().

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
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 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 15f02b91056253e8cdc592888f431da0731337b8 before 96dca51715d86559ed6ed8028e5445cecb80f3ae; from 15f02b91056253e8cdc592888f431da0731337b8 before 330b20ec97916961ee0e6c29c06bc0fa7c96e64c; 15f02b91056253e8cdc592888f431da0731337b8 builds before 0ccd75c51f620374086f359e906917676e699a1c; from 15f02b91056253e8cdc592888f431da0731337b8 before 77a853aec710b2fdf41fa298ea3cbc9a4358f917; from 15f02b91056253e8cdc592888f431da0731337b8 before fe1188abdae9b7a8199dcdfcf9244d5e5d61eb14; from 15f02b91056253e8cdc592888f431da0731337b8 before dc89961b76f12aff47124c1df4bdb32a080f4d0c; from 15f02b91056253e8cdc592888f431da0731337b8 before 5501d055a1ce3c747141e3955ba8cf034d193f3e; from 15f02b91056253e8cdc592888f431da0731337b8 before 42776497cdbc9a665b384a6dcb85f0d4bd927eab	CNA record
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	from 0:6.12.0-211.37.1.el10_2 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support redhat:rhel_aus	from 0:4.18.0-305.206.1.el8_4 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On redhat:rhel_eus_long_life	from 0:4.18.0-305.206.1.el8_4 not affected	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.7 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.141; from 6.7 before 6.12.91; from 6.13 before 6.18.33; from 6.19 before 7.0.10	NVD

References

References

https://git.kernel.org/stable/c/96dca51715d86559ed6ed8028e5445cecb80f3ae	patch
https://git.kernel.org/stable/c/330b20ec97916961ee0e6c29c06bc0fa7c96e64c	patch
https://git.kernel.org/stable/c/0ccd75c51f620374086f359e906917676e699a1c	patch
https://git.kernel.org/stable/c/77a853aec710b2fdf41fa298ea3cbc9a4358f917	patch
https://git.kernel.org/stable/c/fe1188abdae9b7a8199dcdfcf9244d5e5d61eb14	patch
https://git.kernel.org/stable/c/dc89961b76f12aff47124c1df4bdb32a080f4d0c	patch
https://git.kernel.org/stable/c/5501d055a1ce3c747141e3955ba8cf034d193f3e	patch
https://git.kernel.org/stable/c/42776497cdbc9a665b384a6dcb85f0d4bd927eab	patch
https://access.redhat.com/errata/RHSA-2026:42550	third-party-advisory
https://access.redhat.com/errata/RHSA-2026:42552	third-party-advisory
1–10 of 19

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.