CVE-2026-53071Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp
Updated under an hour ago ()
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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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Free account, 1 product
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 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
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 |
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
- https://git.kernel.org/stable/c/96dca51715d86559ed6ed8028e5445cecb80f3aepatch
- https://git.kernel.org/stable/c/330b20ec97916961ee0e6c29c06bc0fa7c96e64cpatch
- https://git.kernel.org/stable/c/0ccd75c51f620374086f359e906917676e699a1cpatch
- https://git.kernel.org/stable/c/77a853aec710b2fdf41fa298ea3cbc9a4358f917patch
- https://git.kernel.org/stable/c/fe1188abdae9b7a8199dcdfcf9244d5e5d61eb14patch
- https://git.kernel.org/stable/c/dc89961b76f12aff47124c1df4bdb32a080f4d0cpatch
- https://git.kernel.org/stable/c/5501d055a1ce3c747141e3955ba8cf034d193f3epatch
- https://git.kernel.org/stable/c/42776497cdbc9a665b384a6dcb85f0d4bd927eabpatch
- https://access.redhat.com/errata/RHSA-2026:42550third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:42552third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:42919
- https://access.redhat.com/errata/RHSA-2026:43307
- https://access.redhat.com/errata/RHSA-2026:65710
- https://access.redhat.com/errata/RHSA-2026:65711
- https://access.redhat.com/errata/RHSA-2026:67721
- https://access.redhat.com/errata/RHSA-2026:67723
- https://access.redhat.com/security/cve/CVE-2026-53071third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2492458third-party-advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53071.jsonthird-party-advisory
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.