Description
A heap-based buffer overflow was found in the Linux kernel's LightNVM subsystem. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. This vulnerability allows a local attacker to escalate privileges and execute arbitrary code in the context of the kernel. The attacker must first obtain the ability to execute high-privileged code on the target system to exploit this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | Fixed in kernel 5.15-rc1 | — |
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 | 5.15.3-1 | — |
| Debian 13 | linux | 5.15.3-1 | — |
| Debian 12 | linux | 5.15.3-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-122.138 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1081.88 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1086.91 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1042.47 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1084.92 | — |
| Ubuntu 20.04 LTS | linux-gke | 5.4.0-1078.84 | — |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1049.52 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1029.33 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1004.6 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1071.76 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1079.87 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1066.76 | — |
| Ubuntu 20.04 LTS | linux-riscv +23 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-191.202 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1139.150 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1081.88~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1149.164 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1086.91~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1051.56 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1134.150 | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1084.92~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-122.138~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-ibm-5.4 | 5.4.0-1029.33~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1125.130 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1104.115 | — |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1079.87~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1066.76~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1117.125 | — |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1135.145 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips +1 | 5.4.0-1081.88+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1086.91+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1057.65 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2078.83 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2059.65 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1096.107 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2043.48 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1088.95 | — |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-239.273 | USN-6014-1 |
| Ubuntu Pro 16.04 LTS | linux-aws | 4.4.0-1155.170 | USN-6001-1 |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1139.150~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1149.164~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1134.150~16.04.2 | — |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-191.202~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-kvm | 4.4.0-1118.128 | USN-6014-1 |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1104.115~16.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1117.123 | USN-6013-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1149.164~14.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-239.273~14.04.1 | USN-6014-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-150100.197.137.2 | SUSE-SU-2023:0768-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.150.1 | SUSE-SU-2025:0834-1, SUSE-SU-2023:0634-1 |
| SLES 12 SP4 | kernel-syms +2 | 4.12.14-95.120.4 | SUSE-SU-2023:0852-1 |
| SLES 12 SP3 | kernel-syms +2 | 4.4.180-94.174.1 | SUSE-SU-2022:3263-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.188.1 | SUSE-SU-2022:3294-1 |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP1 | kernel-docs +4 | 4.12.14-150100.197.137.2 | SUSE-SU-2023:0768-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.150.1 | SUSE-SU-2023:0634-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_27 | 13-150200.2.2 | SUSE-SU-2023:2007-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_29 | 10-150200.2.2 | SUSE-SU-2023:1983-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-150100.197.137.2 | SUSE-SU-2023:0768-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_31 | 11-150100.2.2 | SUSE-SU-2023:1983-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_33 | 9-150100.2.2 | SUSE-SU-2023:2023-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_38 | 1-150100.3.3.2 | SUSE-SU-2023:0768-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.150.1 | SUSE-SU-2025:0834-1, SUSE-SU-2023:0634-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_31 | 12-2.2 | SUSE-SU-2023:1973-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_32 | 11-2.2 | SUSE-SU-2023:1983-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_33 | 9-2.2 | SUSE-SU-2023:2023-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_40 +1 | 1-8.3.1 | SUSE-SU-2025:0834-1, SUSE-SU-2023:0634-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.120.4 | SUSE-SU-2023:0852-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_27 | 11-2.2 | SUSE-SU-2023:2023-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_28 +1 | 9-2.2 | SUSE-SU-2023:2007-1, SUSE-SU-2023:1971-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_34 | 1-6.3.4 | SUSE-SU-2023:0852-1 |
| SLE HPC 15 SP1 | kernel-docs +4 | 4.12.14-150100.197.137.2 | SUSE-SU-2023:0768-1 |
| SUSE OpenStack Cloud Crowbar 9 | kernel-syms +2 | 4.12.14-95.120.4 | SUSE-SU-2023:0852-1 |
| SUSE OpenStack Cloud 9 | kernel-syms +2 | 4.12.14-95.120.4 | SUSE-SU-2023:0852-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | kernel-debug +4 | 4.12.14-150100.197.137.2 | SUSE-SU-2023:0768-1 |
Advisories 16
- USN-6014-1 linux, linux-kvm, linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6013-1 linux-aws vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6001-1 linux-aws vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- WID-SEC-2024-0794 Dell ECS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- SUSE-SU-2023:2007-1 Security update for the Linux Kernel (Live Patch 27 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3263-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1973-1 Security update for the Linux Kernel (Live Patch 31 for SLE 12 SP5) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3294-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1983-1 Security update for the Linux Kernel (Live Patch 29 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0852-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2023-1 Security update for the Linux Kernel (Live Patch 33 for SLE 15 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:1971-1 Security update for the Linux Kernel (Live Patch 28 for SLE 12 SP4) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0634-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0834-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0768-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-1196 Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation BSI CERT-Bund (WID) · May 29, 2025