Description
In the Linux kernel, the following vulnerability has been resolved:
xen/privcmd: Fix a possible warning in privcmd_ioctl_mmap_resource()
As 'kdata.num' is user-controlled data, if user tries to allocate
memory larger than(>=) MAX_ORDER, then kcalloc() will fail, it
creates a stack trace and messes up dmesg with a warning.
Call trace:
-> privcmd_ioctl
--> privcmd_ioctl_mmap_resource
Add __GFP_NOWARN in order to avoid too large allocation warning.
This is detected by static analysis using smatch.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 4.18 | 4.19.270 |
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 | 6.1.4-1 | — |
| Debian 13 | linux | 6.1.4-1 | — |
| Debian 12 | linux | 6.1.4-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1015.17 | — |
| Ubuntu 24.04 LTS | linux-riscv +8 | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-69.76 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1033.37 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1035.42 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1035.42.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1031.38 | — |
| Ubuntu 22.04 LTS | linux-gke +1 | 5.15.0-1030.35 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1017.22 | — |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1027.30 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1027.32 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1023.23 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1032.38 | — |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1026.28 | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-144.161 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1097.105 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1033.37~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1104.110 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1035.42~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1059.65 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1101.110 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1031.38~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-69.76~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1045.50 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1027.32~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1013.15 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1087.93 | — |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1014.14~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1094.103 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1032.38~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1081.92 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1030.34~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-xilinx-zynqmp | 5.4.0-1022.26 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1097.105~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1104.110~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1101.110~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-144.161~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-ibm-5.4 | 5.4.0-1045.50~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1094.103~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1081.92~18.04.1 | — |
Show 4 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 | 5.15.0-1023.28 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1034.37 | — |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1099.107+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1104.110+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1073.82 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1101.110+fips1 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.127.1 | SUSE-SU-2025:4320-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.127.1.150500.6.61.1 | SUSE-SU-2025:4320-1 |
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | kernel-default-base | 5.14.21-150500.55.127.1.150500.6.61.1 | SUSE-SU-2025:4320-1 |
| SLES for SAP 15 SP5 | kernel-docs +4 | 5.14.21-150500.55.127.1 | SUSE-SU-2025:4320-1 |
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SLES for SAP 15 SP4 | kernel-docs +4 | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.127.1.150500.6.61.1 | SUSE-SU-2025:4320-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.112.1 | SUSE-SU-2025:4149-1 |
| SLE Micro 5.5 | kernel-source +1 | 5.14.21-150500.55.127.1 | SUSE-SU-2025:4320-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SLE Micro 5.4 | kernel-rt +1 | 5.14.21-150400.15.136.1 | SUSE-SU-2025:4139-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SLE Micro 5.3 | kernel-rt +1 | 5.14.21-150400.15.136.1 | SUSE-SU-2025:4139-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.127.1 | SUSE-SU-2025:4320-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_32 | 1-150500.11.3.1 | SUSE-SU-2025:4320-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_46 | 1-150400.9.5.1 | SUSE-SU-2025:4111-1 |
| SLE HPC 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.127.1 | SUSE-SU-2025:4320-1 |
| SLE HPC 15 SP5 | kernel-default-base | 5.14.21-150500.55.127.1.150500.6.61.1 | SUSE-SU-2025:4320-1 |
| SLE HPC 15 SP4 | kernel-64kb +5 | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SUSE Manager Server LTS 4.3 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SUSE Manager Server LTS 4.3 | kernel-syms +3 | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SUSE Manager Proxy LTS 4.3 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SUSE Manager Proxy LTS 4.3 | kernel-syms +2 | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
Advisories 5
- WID-SEC-2025-2394 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 9, 2026
- SUSE-SU-2025:4139-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4149-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4111-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4320-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://git.kernel.org/stable/c/5d68ae32d132ea2af73bc223fd64c46f85302a8b
- https://git.kernel.org/stable/c/4f983ee5e5de924d93a7bbb4e6f68f38c6256cd5
- https://git.kernel.org/stable/c/46026bb057c35f5bb111bf95e00cd8366d2e34d4
- https://git.kernel.org/stable/c/0bf874183b32eae2cc20e3c5be38ec3d33e7e564
- https://git.kernel.org/stable/c/e0c5f1058ed96f2b7487560c4c4cbd768d13d065
- https://git.kernel.org/stable/c/4da411086f5ab32f811a89ef804980ec106ebb65
- https://git.kernel.org/stable/c/8b997b2bb2c53b76a6db6c195930e9ab8e4b0c79