In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_ldisc: Clear HCI_UART_PROTO_INIT on error

When hci_register_dev() fails in hci_uart_register_dev()
HCI_UART_PROTO_INIT is not cleared before calling hu->proto->close(hu)
and setting hu->hdev to NULL. This means incoming UART data will reach
the protocol-specific recv handler in hci_uart_tty_receive() after
resources are freed.

Clear HCI_UART_PROTO_INIT with a write lock before calling
hu->proto->close() and setting hu->hdev to NULL. The write lock ensures
all active readers have completed and no new reader can enter the
protocol recv path before resources are freed.

This allows the protocol-specific recv functions to remove the
"HCI_UART_REGISTERED" guard without risking a null pointer dereference
if hci_register_dev() fails.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
a40f94f7caa8d3421b64f63ac31bc0f24c890f39 affected < ebb39b2d81731b83ee71a1ba6dd0291a57b5ac07
9e5a0f5777162e503400c70c6ed25fbbe2d38799 affected < ed4033fb85ccaaf6c3983be3c7b037e48253d232
80f14e9de6a43a0bd8194cad1003a3e6dcbc3984 affected < 356dee1bcac4d0d9152390561fa63331ebff211b
02e1bcdfdf769974e7e9fa285e295cd9852e2a38 affected < a673cf6c4ac702cb79ac1f4d7fc4de763a6a3e40
281782d2c6730241e300d630bb9f200d831ede71 affected < f4b69c35813c432973d340d3600c01de106ed474
5df5dafc171b90d0b8d51547a82657cd5a1986c7 affected < 3daa5818e473ed60eb69d8b5c71b651909d28c5a
5df5dafc171b90d0b8d51547a82657cd5a1986c7 affected < 194f029a4d7f739e44ebc1f473120187b4de5104
5df5dafc171b90d0b8d51547a82657cd5a1986c7 affected < 68d39ea5e0adc9ecaea1ce8abd842ec972eb8718
1dcf08fcff5ca529de6dc0395091f28854f4e54a affected —
8e5aff600539e5faea294d9612cca50220e602b8 affected —
db7509fa110dd9b11134b75894677f30353b2c51 affected —
5.10.237 affected < 5.10.258
5.15.181 affected < 5.15.209
6.1.135 affected < 6.1.175
6.6.88 affected < 6.6.141
6.12.24 affected < 6.12.91
5.4.293 affected < 5.5
6.13.12 affected < 6.14
6.14.3 affected < 6.15
Linux Linux affected
Version Status Constraints
6.15 affected —
0 unaffected < 6.15
5.10.258 unaffected ≤ 5.10.*
5.15.209 unaffected ≤ 5.15.*
6.1.175 unaffected ≤ 6.1.*
6.6.141 unaffected ≤ 6.6.*
6.12.91 unaffected ≤ 6.12.*
6.18.33 unaffected ≤ 6.18.*
7.0.10 unaffected ≤ 7.0.*
7.1 unaffected ≤ *

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Project Subscriptions

Vendors Products
Linux Subscribe
Linux Kernel Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/194f029a4d7f739e44ebc1f473120187b4de5104 cve-icon
https://git.kernel.org/stable/c/356dee1bcac4d0d9152390561fa63331ebff211b cve-icon
https://git.kernel.org/stable/c/3daa5818e473ed60eb69d8b5c71b651909d28c5a cve-icon
https://git.kernel.org/stable/c/68d39ea5e0adc9ecaea1ce8abd842ec972eb8718 cve-icon
https://git.kernel.org/stable/c/a673cf6c4ac702cb79ac1f4d7fc4de763a6a3e40 cve-icon
https://git.kernel.org/stable/c/ebb39b2d81731b83ee71a1ba6dd0291a57b5ac07 cve-icon
https://git.kernel.org/stable/c/ed4033fb85ccaaf6c3983be3c7b037e48253d232 cve-icon
https://git.kernel.org/stable/c/f4b69c35813c432973d340d3600c01de106ed474 cve-icon
History

Wed, 24 Jun 2026 19:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-476

Wed, 24 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_ldisc: Clear HCI_UART_PROTO_INIT on error When hci_register_dev() fails in hci_uart_register_dev() HCI_UART_PROTO_INIT is not cleared before calling hu->proto->close(hu) and setting hu->hdev to NULL. This means incoming UART data will reach the protocol-specific recv handler in hci_uart_tty_receive() after resources are freed. Clear HCI_UART_PROTO_INIT with a write lock before calling hu->proto->close() and setting hu->hdev to NULL. The write lock ensures all active readers have completed and no new reader can enter the protocol recv path before resources are freed. This allows the protocol-specific recv functions to remove the "HCI_UART_REGISTERED" guard without risking a null pointer dereference if hci_register_dev() fails.
Title Bluetooth: hci_ldisc: Clear HCI_UART_PROTO_INIT on error
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-06-24T16:30:14.463Z

Reserved: 2026-06-09T07:44:35.383Z

Link: CVE-2026-53073

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-24T19:30:08Z

Weaknesses