Description
A race condition was found in the Linux kernel's RxRPC network protocol, within the processing of RxRPC bundles. This issue results from the lack of proper locking when performing operations on an object. This may allow an attacker to escalate privileges and execute arbitrary code in the context of the kernel.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Linux kernel's RxRPC network protocol | Fixed in kernel v6.1-rc7 | — |
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 | 6.0.12-1 | — |
| Debian 13 | linux | 6.0.12-1 | — |
| Debian 12 | linux | 6.0.12-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1014.16 | — |
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-67.74 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1031.35 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1034.41 | — |
| Ubuntu 22.04 LTS | linux-azure-5.19 | 5.19.0-1021.22~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1034.41.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1030.37 | — |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1028.33 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1016.21 | — |
| Ubuntu 22.04 LTS | linux-hwe-5.19 | 5.19.0-35.36~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1026.29 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1026.31 | — |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1029.34 | — |
| Ubuntu 22.04 LTS | linux-lowlatency-hwe-5.19 | 5.19.0-1018.19~22.04.1 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1023.23 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1030.36 | — |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1025.27 | — |
| Ubuntu 22.04 LTS | linux-riscv +3 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1031.35~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1034.41~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1034.41~20.04.1.2 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1030.37~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke-5.15 | 5.15.0-1028.33~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1016.21~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-67.74~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1026.31~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1030.36~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-riscv +23 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1030.34~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
Show 2 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-intel-iot-realtime | 5.15.0-1022.27 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1033.36 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.39.1 | SUSE-SU-2023:4730-1 |
| SLES 15 SP5 | kernel-azure +2 | 5.14.21-150500.33.26.1 | SUSE-SU-2023:4734-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.39.1.150500.6.17.1 | SUSE-SU-2023:4730-1 |
| SLES 15 SP4 | kernel-64kb +4 | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| SLES 15 SP4 | kernel-azure +2 | 5.14.21-150400.14.75.1 | SUSE-SU-2023:4782-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.100.2.150400.24.46.2 | SUSE-SU-2023:4810-1 |
| SLES 15 SP4 | kernel-docs +1 | 5.14.21-150400.24.100.1 | SUSE-SU-2023:4810-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 5.5 | kernel-default | 5.14.21-150500.55.39.1 | SUSE-SU-2023:4730-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.39.1.150500.6.17.1 | SUSE-SU-2023:4730-1 |
| SLE Micro 5.5 | kernel-rt | 5.14.21-150500.13.27.2 | SUSE-SU-2023:4732-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.100.2.150400.24.46.2 | SUSE-SU-2023:4810-1 |
| SLE Micro 5.4 | kernel-rt | 5.14.21-150400.15.62.1 | SUSE-SU-2023:4731-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.100.2.150400.24.46.2 | SUSE-SU-2023:4810-1 |
| SLE Micro 5.3 | kernel-rt | 5.14.21-150400.15.62.1 | SUSE-SU-2023:4731-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.39.1 | SUSE-SU-2023:4730-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5-RT_Update_8 | 1-150500.11.3.2 | SUSE-SU-2023:4732-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_8 | 1-150500.11.3.1 | SUSE-SU-2023:4730-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4-RT_Update_16 | 1-150400.1.3.1 | SUSE-SU-2023:4731-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_21 | 1-150400.9.3.2 | SUSE-SU-2023:4810-1 |
| SUSE Real Time Module 15 SP5 | kernel-rt +2 | 5.14.21-150500.13.27.2 | SUSE-SU-2023:4732-1 |
| SUSE Real Time Module 15 SP5 | kernel-syms-rt | 5.14.21-150500.13.27.1 | SUSE-SU-2023:4732-1 |
| SUSE Real Time Module 15 SP4 | kernel-rt +3 | 5.14.21-150400.15.62.1 | SUSE-SU-2023:4731-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | dtb-aarch64 +10 | 5.14.21-150500.55.39.1 | SUSE-SU-2023:4730-1 |
| openSUSE Leap 15.5 | kernel-azure +2 | 5.14.21-150500.33.26.1 | SUSE-SU-2023:4734-1 |
| openSUSE Leap 15.5 | kernel-default-base | 5.14.21-150500.55.39.1.150500.6.17.1 | SUSE-SU-2023:4730-1 |
| openSUSE Leap 15.5 | kernel-rt +2 | 5.14.21-150500.13.27.2 | SUSE-SU-2023:4732-1 |
| openSUSE Leap 15.5 | kernel-syms-rt | 5.14.21-150500.13.27.1 | SUSE-SU-2023:4732-1 |
| openSUSE Leap 15.4 | dtb-aarch64 +3 | 5.14.21-150400.24.100.1 | SUSE-SU-2023:4810-1 |
| openSUSE Leap 15.4 | kernel-64kb +6 | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| openSUSE Leap 15.4 | kernel-azure +2 | 5.14.21-150400.14.75.1 | SUSE-SU-2023:4782-1 |
| openSUSE Leap 15.4 | kernel-default-base | 5.14.21-150400.24.100.2.150400.24.46.2 | SUSE-SU-2023:4810-1 |
| openSUSE Leap 15.4 | kernel-rt +3 | 5.14.21-150400.15.62.1 | SUSE-SU-2023:4731-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.4 | kernel-default | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| openSUSE Leap Micro 5.4 | kernel-default-base | 5.14.21-150400.24.100.2.150400.24.46.2 | SUSE-SU-2023:4810-1 |
| openSUSE Leap Micro 5.4 | kernel-rt | 5.14.21-150400.15.62.1 | SUSE-SU-2023:4731-1 |
| openSUSE Leap Micro 5.3 | kernel-default | 5.14.21-150400.24.100.2 | SUSE-SU-2023:4810-1 |
| openSUSE Leap Micro 5.3 | kernel-default-base | 5.14.21-150400.24.100.2.150400.24.46.2 | SUSE-SU-2023:4810-1 |
| openSUSE Leap Micro 5.3 | kernel-rt | 5.14.21-150400.15.62.1 | SUSE-SU-2023:4731-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.111.1-1 | — |
Advisories 7
- SUSE-SU-2023:4734-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4810-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4732-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4782-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4730-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2023:4731-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2023-0968 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 28, 2024