Description
In the Linux kernel, the following vulnerability has been resolved:
usb: typec: tcpm: Check for port partner validity before consuming it
typec_register_partner() does not guarantee partner registration
to always succeed. In the event of failure, port->partner is set
to the error value or NULL. Given that port->partner validity is
not checked, this results in the following crash:
Unable to handle kernel NULL pointer dereference at virtual address xx
pc : run_state_machine+0x1bc8/0x1c08
lr : run_state_machine+0x1b90/0x1c08
..
Call trace:
run_state_machine+0x1bc8/0x1c08
tcpm_state_machine_work+0x94/0xe4
kthread_worker_fn+0x118/0x328
kthread+0x1d0/0x23c
ret_from_fork+0x10/0x20
To prevent the crash, check for port->partner validity before
derefencing it in all the call sites.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 5.15.132 – < 5.15.168, 6.1.53 – < 6.1.91, 6.4.16 – < 6.5, 6.5.3 – < 6.6, 6.6 | 5.15.168 |
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 | 6.8.11-1 | — |
| Debian 13 | linux | 6.8.11-1 | — |
| Debian 12 | linux | 6.1.94-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1057.59 | — |
| Ubuntu 24.04 LTS | linux | 6.8.0-40.40 | USN-6949-1 |
| Ubuntu 24.04 LTS | linux-aws | 6.8.0-1013.14 | USN-6949-1 |
| Ubuntu 24.04 LTS | linux-azure | 6.8.0-1012.14 | USN-6952-2 |
| Ubuntu 24.04 LTS | linux-gcp | 6.8.0-1012.13 | USN-6949-1 |
| Ubuntu 24.04 LTS | linux-gke | 6.8.0-1008.11 | USN-6949-1 |
| Ubuntu 24.04 LTS | linux-ibm +2 | 6.8.0-1010.10 | USN-6955-1, USN-6952-1, USN-6949-1 |
| Ubuntu 24.04 LTS | linux-nvidia | 6.8.0-1011.11 | USN-6949-1 |
| Ubuntu 24.04 LTS | linux-nvidia-lowlatency | 6.8.0-1011.11.1 | USN-6952-1 |
| Ubuntu 24.04 LTS | linux-raspi | 6.8.0-1009.10 | USN-6949-2 |
| Ubuntu 24.04 LTS | linux-riscv +1 | 6.8.0-40.40.1 | USN-6949-2 |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-127.137 | USN-7166-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1073.79 | USN-7166-2 |
| Ubuntu 22.04 LTS | linux-aws-6.8 | 6.8.0-1013.14~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1078.87 | USN-7186-2 |
| Ubuntu 22.04 LTS | linux-azure-6.8 | 6.8.0-1012.14~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1078.87.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1072.80 | USN-7166-1 |
| Ubuntu 22.04 LTS | linux-gcp-6.8 | 6.8.0-1012.13~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1070.76 | USN-7166-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1056.63 | USN-7166-1 |
| Ubuntu 22.04 LTS | linux-hwe-6.8 | 6.8.0-40.40~22.04.3 | — |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1066.69 | USN-7166-1 |
| Ubuntu 22.04 LTS | linux-ibm-6.8 +1 | 6.8.0-1010.10~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1070.75 | USN-7166-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1068.69 | USN-7166-1 |
| Ubuntu 22.04 LTS | linux-nvidia-6.8 | 6.8.0-1011.11~22.04.1 | USN-6949-1 |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1032.32 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1020.20 | — |
| Ubuntu 22.04 LTS | linux-oracle +1 | 5.15.0-1071.77 | USN-7186-1, USN-7166-1 |
| Ubuntu 22.04 LTS | linux-riscv +31 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv-6.8 +1 | 6.8.0-40.40.1~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1039.43 | USN-7166-4 |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1073.79~20.04.1 | USN-7166-2 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1078.87~20.04.1 | USN-7194-1 |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1072.80~20.04.1 | USN-7166-1 |
| Ubuntu 20.04 LTS | linux-gke +27 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-127.137~20.04.1 | USN-7166-3, USN-7166-1 |
| Ubuntu 20.04 LTS | linux-ibm-5.15 | 5.15.0-1066.69~20.04.1 | USN-7166-1 |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1032.32~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 +1 | 5.15.0-1071.77~20.04.1 | USN-7186-2, USN-7166-1 |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1069.73~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
Show 5 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 24.04 LTS | linux-raspi-realtime | 6.8.0-2008.8 | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime | 6.8.1-1006.6 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1066.68 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1074.82 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime-6.8 | 6.8.1-1006.6~22.04.1 | — |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-fips | 6.8.0-78.78+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-aws-fips | 5.15.0-1073.79+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-azure-fips | 5.15.0-1078.87+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-fips | 5.15.0-127.137+fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | linux-gcp-fips | 5.15.0-1072.80+fips1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | kernel-64kb +3 | 6.4.0-150600.23.7.3 | SUSE-SU-2024:2203-1 |
| SLES 15 SP6 | kernel-azure +1 | 6.4.0-150600.8.5.4 | SUSE-SU-2024:2135-1 |
| SLES 15 SP6 | kernel-default-base | 6.4.0-150600.23.7.3.150600.12.2.7 | SUSE-SU-2024:2203-1 |
| SLES 15 SP6 | kernel-docs | 6.4.0-150600.23.7.4 | SUSE-SU-2024:2203-1 |
| SLES 15 SP6 | kernel-source | 6.4.0-150600.23.7.2 | SUSE-SU-2024:2203-1 |
| SLES 15 SP6 | kernel-syms | 6.4.0-150600.23.7.1 | SUSE-SU-2024:2203-1 |
| SLES 15 SP6 | kernel-syms-azure | 6.4.0-150600.8.5.1 | SUSE-SU-2024:2135-1 |
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.68.1 | SUSE-SU-2024:2190-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.57.1 | SUSE-SU-2024:2019-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.68.1.150500.6.31.1 | SUSE-SU-2024:2190-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 6.1 | kernel-livepatch-MICRO-6-0-RT_Update_5 | 1-1.1 | SUSE-SU-2025:20249-1 |
| SLE Micro 6.1 | kernel-rt +1 | 6.4.0-25.1 | SUSE-SU-2025:20249-1 |
| SLE Micro 6.0 | kernel-default-base | 6.4.0-17.1.1.51 | SUSE-SU-2025:20008-1 |
| SLE Micro 6.0 | kernel-livepatch-MICRO-6-0-RT_Update_5 | 1-1.1 | SUSE-SU-2025:20166-1 |
| SLE Micro 6.0 | kernel-rt +1 | 6.4.0-9.1 | SUSE-SU-2025:20166-1, SUSE-SU-2025:20028-1 |
| SLE Micro 6.0 | kernel-source +2 | 6.4.0-18.1 | SUSE-SU-2025:20008-1 |
| SLE Micro 5.5 | kernel-default | 5.14.21-150500.55.68.1 | SUSE-SU-2024:2190-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.68.1.150500.6.31.1 | SUSE-SU-2024:2190-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.58.1 | SUSE-SU-2024:2008-1 |
| SLE Live Patching 15 SP6 | kernel-default | 6.4.0-150600.23.7.3 | SUSE-SU-2024:2203-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6-RT_Update_1 | 1-150600.1.5.1 | SUSE-SU-2024:2973-1 |
| SLE Live Patching 15 SP6 | kernel-livepatch-SLE15-SP6_Update_1 | 1-150600.13.3.7 | SUSE-SU-2024:2203-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.68.1 | SUSE-SU-2024:2190-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_15 +1 | 1-150500.11.3.1 | SUSE-SU-2024:2190-1, SUSE-SU-2024:2008-1 |
| SUSE Real Time Module 15 SP6 | kernel-rt +3 | 6.4.0-150600.10.5.1 | SUSE-SU-2024:2973-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +3 | 5.14.21-150500.13.58.1 | SUSE-SU-2024:2008-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.6 | dtb-aarch64 +2 | 6.4.0-150600.23.7.1 | SUSE-SU-2024:2203-1 |
| openSUSE Leap 15.6 | kernel-64kb +5 | 6.4.0-150600.23.7.3 | SUSE-SU-2024:2203-1 |
| openSUSE Leap 15.6 | kernel-azure +1 | 6.4.0-150600.8.5.4 | SUSE-SU-2024:2135-1 |
| openSUSE Leap 15.6 | kernel-default-base | 6.4.0-150600.23.7.3.150600.12.2.7 | SUSE-SU-2024:2203-1 |
| openSUSE Leap 15.6 | kernel-docs | 6.4.0-150600.23.7.4 | SUSE-SU-2024:2203-1 |
| openSUSE Leap 15.6 | kernel-rt +3 | 6.4.0-150600.10.5.1 | SUSE-SU-2024:2973-1 |
| openSUSE Leap 15.6 | kernel-source | 6.4.0-150600.23.7.2 | SUSE-SU-2024:2203-1 |
| openSUSE Leap 15.6 | kernel-syms-azure | 6.4.0-150600.8.5.1 | SUSE-SU-2024:2135-1 |
| openSUSE Leap 15.5 | dtb-aarch64 +10 | 5.14.21-150500.55.68.1 | SUSE-SU-2024:2190-1 |
| openSUSE Leap 15.5 | kernel-azure +2 | 5.14.21-150500.33.57.1 | SUSE-SU-2024:2019-1 |
| openSUSE Leap 15.5 | kernel-default-base | 5.14.21-150500.55.68.1.150500.6.31.1 | SUSE-SU-2024:2190-1 |
| openSUSE Leap 15.5 | kernel-rt +3 | 5.14.21-150500.13.58.1 | SUSE-SU-2024:2008-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | kernel | 6.6.35.1-4 | — |
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.176.3-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | bpftool +13 | 5.15.0-303.171.5.2.el9uek | ELSA-2024-12887 |
Advisories 24
- USN-7166-1 linux, linux-gcp, linux-gcp-5.15, linux-gke, linux-gkeop, linux-ibm, linux-ibm-5.15, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7166-3 linux-hwe-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7186-2 linux-azure, linux-intel-iotg-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7166-2 linux-aws, linux-aws-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7194-1 linux-azure-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7186-1 linux-intel-iotg vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-7166-4 linux-xilinx-zynqmp vulnerabilities Ubuntu Security Notices (USN) · Oct 29, 2026
- USN-6955-1 linux-oem-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6952-2 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6952-1 linux-nvidia-lowlatency, linux-oracle vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6949-2 linux-lowlatency, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- USN-6949-1 linux, linux-aws, linux-gcp, linux-gke, linux-ibm, linux-nvidia, linux-nvidia-6.8 vulnerabilities Ubuntu Security Notices (USN) · Oct 26, 2026
- WID-SEC-2024-1259 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service und unspezifischen Angriff BSI CERT-Bund (WID) · Oct 7, 2026
- SUSE-SU-2025:20166-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20008-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20028-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20249-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2024:2973-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2019-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2190-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2008-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2135-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:2203-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2024-12887 Important: Unbreakable Enterprise kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Dec 18, 2024
References
- https://git.kernel.org/stable/c/2a07e6f0ad8a6e504a3912cfe8dc859b7d0740a5
- https://git.kernel.org/stable/c/d56d2ca03cc22123fd7626967d096d8661324e57
- https://git.kernel.org/stable/c/789326cafbd1f67f424436b6bc8bdb887a364637
- https://git.kernel.org/stable/c/fc2b655cb6dd2b381f1f284989721002e39b6b77
- https://git.kernel.org/stable/c/ae11f04b452b5205536e1c02d31f8045eba249dd