Description
A buffer overflow vulnerability was found in the NVM Express (NVMe) driver in the Linux kernel. Only privileged user could specify a small meta buffer and let the device perform larger Direct Memory Access (DMA) into the same buffer, overwriting unrelated kernel memory, causing random kernel crashes and memory corruption.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Fedora | Fedora | — | — |
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 | No fix yet | — |
| Debian 13 | linux | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 24.04 LTS | linux-bluefield | No fix yet | — |
| Ubuntu 26.10 | linux +8 | No fix yet | — |
| Ubuntu 26.04 LTS | linux +14 | No fix yet | — |
| Ubuntu 25.10 | linux +8 | No fix yet | — |
| Ubuntu 24.04 LTS | linux +53 | No fix yet | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | linux-riscv +41 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +26 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime +3 | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime-6.8 | No fix yet | — |
| Ubuntu Pro FIPS-updates 24.04 LTS | linux-fips +3 | No fix yet | — |
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 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLE Micro 6.0 | kernel-default-base | 6.4.0-17.1.1.51 | SUSE-SU-2025:20008-1 |
| SLE Micro 6.0 | kernel-rt +1 | 6.4.0-9.1 | SUSE-SU-2025:20028-1 |
| SLE Micro 6.0 | kernel-source +2 | 6.4.0-18.1 | SUSE-SU-2025:20008-1 |
| 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 |
| SUSE Real Time Module 15 SP6 | kernel-rt +3 | 6.4.0-150600.10.5.1 | SUSE-SU-2024:2973-1 |
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 |
Advisories 6
- 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
- WID-SEC-2023-2990 Linux Kernel: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Feb 15, 2026
- SUSE-SU-2024:2973-1 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
References
- https://access.redhat.com/security/cve/CVE-2023-6238 vdb-entry
- RHBZ#2250834 issue-tracking