Description
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_event: Ignore multiple conn complete events
When one of the three connection complete events is received multiple
times for the same handle, the device is registered multiple times which
leads to memory corruptions. Therefore, consequent events for a single
connection are ignored.
The conn->state can hold different values, therefore HCI_CONN_HANDLE_UNSET
is introduced to identify new connections. To make sure the events do not
contain this or another invalid handle HCI_CONN_HANDLE_MAX and checks
are introduced.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 2.6.27 | 5.17.3 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 5.17.3-1 | — |
| Debian 13 | linux | 5.17.3-1 | — |
| Debian 12 | linux | 5.17.3-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | No fix yet | — |
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +49 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux +21 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux +12 | No fix yet | — |
| Ubuntu Pro 16.04 LTS | linux +7 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux +3 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1, SUSE-SU-2025:03615-1, SUSE-SU-2025:02588-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1, SUSE-SU-2025:03615-1, SUSE-SU-2025:02588-1 |
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.173.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.173.1.150400.24.88.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SLES 12 SP5 | kernel-syms +2 | 4.12.14-122.269.1 | SUSE-SU-2025:02846-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1, SUSE-SU-2025:03615-1, SUSE-SU-2025:02588-1 |
| SLES for SAP 15 SP5 | kernel-docs +4 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1, SUSE-SU-2025:03615-1, SUSE-SU-2025:02588-1 |
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.173.1.150400.24.88.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SLES for SAP 15 SP4 | kernel-docs +4 | 5.14.21-150400.24.173.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1, SUSE-SU-2025:03615-1, SUSE-SU-2025:02588-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.91.1 | SUSE-SU-2025:3761-1, SUSE-SU-2025:1176-1, SUSE-SU-2025:02852-1 |
| SLE Micro 5.5 | kernel-source +1 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1, SUSE-SU-2025:03615-1, SUSE-SU-2025:02588-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.173.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.173.1.150400.24.88.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SLE Micro 5.4 | kernel-rt +1 | 5.14.21-150400.15.127.1 | SUSE-SU-2025:02851-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.173.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.173.1.150400.24.88.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SLE Micro 5.3 | kernel-rt +1 | 5.14.21-150400.15.127.1 | SUSE-SU-2025:02851-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1, SUSE-SU-2025:03615-1, SUSE-SU-2025:02588-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_25 +2 | 1-150500.11.3.1 | SUSE-SU-2025:1241-1, SUSE-SU-2025:03615-1, SUSE-SU-2025:02588-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.173.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_43 +1 | 1-150400.9.3.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.269.1 | SUSE-SU-2025:02846-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_71 | 1-8.3.1 | SUSE-SU-2025:02846-1 |
| SLE HPC 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.100.1 | SUSE-SU-2025:1241-1, SUSE-SU-2025:03615-1, SUSE-SU-2025:02588-1 |
| SLE HPC 15 SP5 | kernel-default-base | 5.14.21-150500.55.100.1.150500.6.47.1 | SUSE-SU-2025:1241-1, SUSE-SU-2025:03615-1, SUSE-SU-2025:02588-1 |
| SLE HPC 15 SP4 | kernel-64kb +5 | 5.14.21-150400.24.173.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.173.1.150400.24.88.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SUSE Manager Server LTS 4.3 | kernel-default-base | 5.14.21-150400.24.173.1.150400.24.88.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SUSE Manager Server LTS 4.3 | kernel-syms +3 | 5.14.21-150400.24.173.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SUSE Manager Proxy LTS 4.3 | kernel-default-base | 5.14.21-150400.24.173.1.150400.24.88.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
| SUSE Manager Proxy LTS 4.3 | kernel-syms +2 | 5.14.21-150400.24.173.1 | SUSE-SU-2025:03628-1, SUSE-SU-2025:02849-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | No fix yet | — |
Advisories 10
- SUSE-SU-2025:02588-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02852-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:03615-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:02846-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:3761-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:03628-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1176-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:1241-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:02849-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:02851-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026