CVE-2023-53374
published 2025-09-18CVE-2023-53374: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early Not calling…
PriorityP338high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.15%
4.4th percentile
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early
Not calling hci_(dis)connect_cfm before deleting conn referred to by a
socket generally results to use-after-free.
When cleaning up SCO connections when the parent ACL is deleted too
early, use hci_conn_failed to do the connection cleanup properly.
We also need to clean up ISO connections in a similar situation when
connecting has started but LE Create CIS is not yet sent, so do it too
here.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.5.3-1 (forky) | linux 6.5.3-1 (forky) |
| linux | linux | — | — |
| linux | linux | — | — |
| linux | linux | >= 6.3.8 < 6.4 | 6.4 |
| linux | linux | >= ca1fd42e7dbfcb34890ffbf1f2f4b356776dab6f < 397d58007532644b35fad746da48c41161f32a57 | 397d58007532644b35fad746da48c41161f32a57 |
| linux | linux | >= ca1fd42e7dbfcb34890ffbf1f2f4b356776dab6f < e94b898463a62b72a2a8b75dea8936bf4db78e00 | e94b898463a62b72a2a8b75dea8936bf4db78e00 |
| linux | linux | >= ca1fd42e7dbfcb34890ffbf1f2f4b356776dab6f < 3344d318337d9dca928fd448e966557ec5063f85 | 3344d318337d9dca928fd448e966557ec5063f85 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 6.5.3-1 | 6.5.3-1 |
| linux | linux_kernel | >= 0 < 6.5.3-1 | 6.5.3-1 |
| linux | linux_kernel | >= 6.3.8 < 6.4 | 6.4 |
| linux | linux_kernel | >= 6.4.1 < 6.4.16 | 6.4.16 |
| linux | linux_kernel | >= 6.5 < 6.5.3 | 6.5.3 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8LOW
vendor_redhat7.8HIGH
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Red Hat
kernel: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early
vendor_redhat·2025-09-18·CVSS 7.8
CVE-2023-53374 [HIGH] CWE-416 kernel: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early
kernel: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early
Not calling hci_(dis)connect_cfm before deleting conn referred to by a
socket generally results to use-after-free.
When cleaning up SCO connections when the parent ACL is deleted too
early, use hci_conn_failed to do the connection cleanup properly.
We also need to clean up ISO connections in a similar situation when
connecting has started but LE Create CIS is not yet sent, so do it too
here.
Statement: A race in Bluetooth connection teardown allowed SCO/ISO child links to be deleted without proper hci_(dis)connect_cfm, causing a use-after-free when the parent ACL was drop
Debian
CVE-2023-53374: linux - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ...
vendor_debian·2023·CVSS 7.8
CVE-2023-53374 [HIGH] CVE-2023-53374: linux - In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ...
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early Not calling hci_(dis)connect_cfm before deleting conn referred to by a socket generally results to use-after-free. When cleaning up SCO connections when the parent ACL is deleted too early, use hci_conn_failed to do the connection cleanup properly. We also need to clean up ISO connections in a similar situation when connecting has started but LE Create CIS is not yet sent, so do it too here.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved (fixed in 6.5.3-1)
sid: resolved (fixed in 6.5.3-1)
trixie: resolved (fixed in 6.5.3-1)
GHSA
GHSA-wwxc-q6v4-r672: In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early
Not call
ghsa_unreviewed·2025-09-18
CVE-2023-53374 [HIGH] CWE-416 GHSA-wwxc-q6v4-r672: In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early
Not call
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early
Not calling hci_(dis)connect_cfm before deleting conn referred to by a
socket generally results to use-after-free.
When cleaning up SCO connections when the parent ACL is deleted too
early, use hci_conn_failed to do the connection cleanup properly.
We also need to clean up ISO connections in a similar situation when
connecting has started but LE Create CIS is not yet sent, so do it too
here.
OSV
CVE-2023-53374: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early Not callin
osv·2025-09-18·CVSS 7.8
CVE-2023-53374 [HIGH] CVE-2023-53374: In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early Not callin
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early Not calling hci_(dis)connect_cfm before deleting conn referred to by a socket generally results to use-after-free. When cleaning up SCO connections when the parent ACL is deleted too early, use hci_conn_failed to do the connection cleanup properly. We also need to clean up ISO connections in a similar situation when connecting has started but LE Create CIS is not yet sent, so do it too here.
No detection rules found.
No public exploits indexed.
2025-09-18
Published