CVE-2023-53297
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp conn->chan_lock isn't acquired before l2cap_get_chan_by_scid, if l2cap_get_chan_by_scid returns NULL, then 'bad unlock balance' is triggered.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2025-19103.html
Vendor advisory: alma — https://access.redhat.com/errata/RHSA-2025:19103
Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2025-19102.html
Vendor advisory: alma — https://bugzilla.redhat.com/2396944
Vendor advisory: alma — https://bugzilla.redhat.com/2396928
Vendor advisory: alma — https://bugzilla.redhat.com/2396431
Vendor advisory: alma — https://bugzilla.redhat.com/2396419
Vendor advisory: alma — https://bugzilla.redhat.com/2395805
Vendor advisory: alma — https://bugzilla.redhat.com/2395681
Vendor advisory: alma — https://access.redhat.com/errata/RHSA-2025:19102
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2023-53297
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2023-53297.html
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2025:19102
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2025:19103
Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2024:2394
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| rocky | 8 | fixed | |
| sles | affected | | |
| debian | bookworm | fixed | 6.1.37-1 |
| debian | bullseye | fixed | 5.10.191-1 |
| debian | forky | fixed | 6.3.7-1 |
| debian | sid | fixed | 6.3.7-1 |
| debian | trixie | fixed | 6.3.7-1 |
References
- https://access.redhat.com/errata/RHSA-2024:2394
- https://errata.rockylinux.org/RLSA-2025:19103
- https://errata.rockylinux.org/RLSA-2025:19102
- https://www.suse.com/security/cve/CVE-2023-53297.html
- https://security-tracker.debian.org/tracker/CVE-2023-53297
- https://access.redhat.com/errata/RHSA-2025:19102
- https://bugzilla.redhat.com/2395681
- https://bugzilla.redhat.com/2395805
- https://bugzilla.redhat.com/2396419
- https://bugzilla.redhat.com/2396431
- https://bugzilla.redhat.com/2396928
- https://bugzilla.redhat.com/2396944
- https://errata.almalinux.org/8/ALSA-2025-19102.html
- https://access.redhat.com/errata/RHSA-2025:19103
- https://errata.almalinux.org/8/ALSA-2025-19103.html
Verify integrity in audit chain (admin only). AS-IS.