Description
In the Linux kernel, the following vulnerability has been resolved:
nvme-pci: fix mempool alloc size
Convert the max size to bytes to match the units of the divisor that
calculates the worst-case number of PRP entries.
The result is used to determine how many PRP Lists are required. The
code was previously rounding this to 1 list, but we can require 2 in the
worst case. In that scenario, the driver would corrupt memory beyond the
size provided by the mempool.
While unlikely to occur (you'd need a 4MB in exactly 127 phys segments
on a queue that doesn't support SGLs), this memory corruption has been
observed by kfence.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 4.18 | 5.10.163 |
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 +10 | 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-aws-5.15 | 5.15.0-1033.37~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1035.42~20.04.1 | — |
| 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-intel-iotg-5.15 | 5.15.0-1027.32~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1014.14~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1032.38~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1030.34~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 6 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-fips +3 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux +10 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux-aws-5.4 +6 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | bpftool | 7.2.0-362.8.1.el9_3 | RHSA-2023:6583 |
| RHEL 9 | rv +64 | 5.14.0-362.8.1.el9_3 | RHSA-2023:6583 |
| RHEL 8 | kernel-rt +12 | 4.18.0-553.171.1.rt7.512.el8_10 | RHSA-2026:75746 |
| RHEL 8 | perf +26 | 4.18.0-553.171.1.el8_10 | RHSA-2026:75747 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | kernel-rt +9 | 4.18.0-553.171.1.rt7.512.el8_10 | ALSA-2026:75746 |
| AlmaLinux 8 | perf +24 | 4.18.0-553.171.1.el8_10 | ALSA-2026:75747 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | kernel | 4.18.0-553.171.1.el8_10 | RLSA-2026:75747 |
| Rocky Linux 8 | kernel-rt | 4.18.0-553.171.1.rt7.512.el8_10 | RLSA-2026:75746 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.133.1 | SUSE-SU-2026:0317-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.133.1.150500.6.65.1 | SUSE-SU-2026:0317-1 |
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.194.1 | SUSE-SU-2026:0617-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.194.1.150400.24.98.3 | SUSE-SU-2026:0617-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | kernel-default-base | 5.14.21-150500.55.133.1.150500.6.65.1 | SUSE-SU-2026:0317-1 |
| SLES for SAP 15 SP5 | kernel-docs +4 | 5.14.21-150500.55.133.1 | SUSE-SU-2026:0317-1 |
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.194.1.150400.24.98.3 | SUSE-SU-2026:0617-1 |
| SLES for SAP 15 SP4 | kernel-docs +4 | 5.14.21-150400.24.194.1 | SUSE-SU-2026:0617-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.133.1.150500.6.65.1 | SUSE-SU-2026:0317-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.118.1 | SUSE-SU-2026:0263-1 |
| SLE Micro 5.5 | kernel-source +1 | 5.14.21-150500.55.133.1 | SUSE-SU-2026:0317-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.194.1 | SUSE-SU-2026:0617-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.194.1.150400.24.98.3 | SUSE-SU-2026:0617-1 |
| SLE Micro 5.4 | kernel-rt +1 | 5.14.21-150400.15.142.1 | SUSE-SU-2026:0411-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.194.1 | SUSE-SU-2026:0617-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.194.1.150400.24.98.3 | SUSE-SU-2026:0617-1 |
| SLE Micro 5.3 | kernel-rt +1 | 5.14.21-150400.15.142.1 | SUSE-SU-2026:0411-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.232.1 | SUSE-SU-2026:0369-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.232.1.150300.18.138.1 | SUSE-SU-2026:0369-1 |
| SLE Micro 5.2 | kernel-rt +1 | 5.3.18-150300.232.1 | SUSE-SU-2026:0350-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.133.1 | SUSE-SU-2026:0317-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_34 | 1-150500.11.3.1 | SUSE-SU-2026:0317-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.194.1 | SUSE-SU-2026:0617-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_48 | 1-150400.9.7.1 | SUSE-SU-2026:0617-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_65 | 15-2.1 | SUSE-SU-2026:0953-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_67 | 14-2.1 | SUSE-SU-2026:1088-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_68 | 12-2.1 | SUSE-SU-2026:0954-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_70 | 11-2.1 | SUSE-SU-2026:1044-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_72 | 7-2.1 | SUSE-SU-2026:0958-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_73 | 5-2.1 | SUSE-SU-2026:0970-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_75 +1 | 3-2.1 | SUSE-SU-2026:0967-1, SUSE-SU-2026:0964-1 |
| SLE HPC 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.133.1 | SUSE-SU-2026:0317-1 |
| SLE HPC 15 SP5 | kernel-default-base | 5.14.21-150500.55.133.1.150500.6.65.1 | SUSE-SU-2026:0317-1 |
| SLE HPC 15 SP4 | kernel-64kb +5 | 5.14.21-150400.24.194.1 | SUSE-SU-2026:0617-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.194.1.150400.24.98.3 | SUSE-SU-2026:0617-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-553.171.1.el8_10 | ELSA-2026-75747 |
Advisories 23
- WID-SEC-2025-2929 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 9, 2026
- ALSA-2026:75746 Important: kernel-rt security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:75747 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:75746 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2026:75747 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2023:6583 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RLSA-2026:75746 Important: kernel-rt security, bug fix, and enhancement update Rocky Linux Security Advisories · Oct 6, 2026
- RLSA-2026:75747 Important: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · Oct 6, 2026
- ELSA-2026-75747 Important: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 5, 2026
- SUSE-SU-2026:1088-1 Security update for the Linux Kernel (Live Patch 67 for SUSE Linux Enterprise 12 SP5) SUSE / openSUSE Security Updates · Mar 28, 2026
- SUSE-SU-2026:1044-1 Security update for the Linux Kernel (Live Patch 70 for SUSE Linux Enterprise 12 SP5) SUSE / openSUSE Security Updates · Mar 27, 2026
- SUSE-SU-2026:0953-1 Security update for the Linux Kernel (Live Patch 65 for SUSE Linux Enterprise 12 SP5) SUSE / openSUSE Security Updates · Mar 24, 2026
- SUSE-SU-2026:0964-1 Security update for the Linux Kernel (Live Patch 75 for SUSE Linux Enterprise 12 SP5) SUSE / openSUSE Security Updates · Mar 24, 2026
- SUSE-SU-2026:0967-1 Security update for the Linux Kernel (Live Patch 76 for SUSE Linux Enterprise 12 SP5) SUSE / openSUSE Security Updates · Mar 24, 2026
- SUSE-SU-2026:0970-1 Security update for the Linux Kernel (Live Patch 73 for SUSE Linux Enterprise 12 SP5) SUSE / openSUSE Security Updates · Mar 24, 2026
- SUSE-SU-2026:0954-1 Security update for the Linux Kernel (Live Patch 68 for SUSE Linux Enterprise 12 SP5) SUSE / openSUSE Security Updates · Mar 24, 2026
- SUSE-SU-2026:0958-1 Security update for the Linux Kernel (Live Patch 72 for SUSE Linux Enterprise 12 SP5) SUSE / openSUSE Security Updates · Mar 24, 2026
- SUSE-SU-2026:0369-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0350-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0317-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2026:0617-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 26, 2026
- SUSE-SU-2026:0411-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 10, 2026
- SUSE-SU-2026:0263-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://git.kernel.org/stable/c/dfb6d54893d544151e7f480bc44cfe7823f5ad23
- https://git.kernel.org/stable/c/9141144b37f30e3e7fa024bcfa0a13011e546ba9
- https://git.kernel.org/stable/c/e1777b4286e526c58b4ee699344b0ad85aaf83a0
- https://git.kernel.org/stable/c/b1814724e0d7162bdf4799f2d565381bc2251c63
- https://git.kernel.org/stable/c/c89a529e823d51dd23c7ec0c047c7a454a428541