Description
A NULL pointer dereference flaw was found in dbFree in fs/jfs/jfs_dmap.c in the journaling file system (JFS) in the Linux Kernel. This issue may allow a local attacker to crash the system due to a missing sanity check.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| 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 | — | — |
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 | 5.18.5-1 | — |
| Debian 13 | linux | 5.18.5-1 | — |
| Debian 12 | linux | 5.18.5-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux | 5.15.0-47.51 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1019.23 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1019.24 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1017.23 | — |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1015.18 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1002.4 | — |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1013.15 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1015.20 | — |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1017.21 | — |
| Ubuntu 22.04 LTS | linux-lowlatency | 5.15.0-47.53 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1007.7 | — |
| Ubuntu 22.04 LTS | linux-oem-5.17 | 5.17.0-1013.14 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1017.22 | — |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1014.16 | — |
| Ubuntu 22.04 LTS | linux-riscv +11 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-126.142 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1085.92 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1019.23~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1091.96 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1019.24~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1046.51 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1089.97 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1017.23~20.04.2 | — |
| Ubuntu 20.04 LTS | linux-gke +25 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gkeop | 5.4.0-1053.56 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-48.54~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1033.37 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1015.20~20.04.2 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1004.6 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1075.80 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1083.91 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1017.22~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1070.80 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1018.21~20.04.1 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-192.203 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1140.151 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1085.92~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1150.165 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1091.96~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1135.151 | — |
| Ubuntu 18.04 LTS | linux-gcp-5.4 | 5.4.0-1089.97~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-126.142~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-ibm-5.4 | 5.4.0-1033.37~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1126.131 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1105.116 | — |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1083.91~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1070.80~18.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
Show 9 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1020.20 | — |
| 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 | 5.4.0-1085.92+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1091.96+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1061.69 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1089.97+fips1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2079.84 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2060.66 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1097.108 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-gcp-fips | 4.15.0-2044.49 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1093.100 | — |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-245.279 | USN-6388-1 |
| Ubuntu Pro 16.04 LTS | linux-aws | 4.4.0-1161.176 | USN-6388-1 |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1140.151~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1150.165~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1135.151~16.04.2 | — |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-192.203~16.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux-kvm | 4.4.0-1124.134 | USN-6388-1 |
| Ubuntu Pro 16.04 LTS | linux-oracle | 4.15.0-1105.116~16.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1123.129 | USN-6388-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1150.165~14.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-245.279~14.04.1 | USN-6388-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-150300.59.133.1 | SUSE-SU-2023:3684-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-150300.59.133.1.150300.18.78.1 | SUSE-SU-2023:3684-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-150200.24.163.1.150200.9.81.1 | SUSE-SU-2023:3687-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.163.1 | SUSE-SU-2023:3687-1 |
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-150100.197.157.1 | SUSE-SU-2023:3680-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.149.1 | SUSE-SU-2023:3681-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.176.1 | SUSE-SU-2023:3705-1 |
| SLES 11 SP4 | kernel-ec2 +5 | 3.0.101-108.147.1 | SUSE-SU-2023:4028-1 |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | kernel-default-base | 5.3.18-150300.59.133.1.150300.18.78.1 | SUSE-SU-2023:3684-1 |
| SLES for SAP 15 SP3 | kernel-docs +5 | 5.3.18-150300.59.133.1 | SUSE-SU-2023:3684-1 |
| SLES for SAP 15 SP2 | kernel-default-base | 5.3.18-150200.24.163.1.150200.9.81.1 | SUSE-SU-2023:3687-1 |
| SLES for SAP 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.163.1 | SUSE-SU-2023:3687-1 |
| SLES for SAP 15 SP1 | kernel-docs +4 | 4.12.14-150100.197.157.1 | SUSE-SU-2023:3680-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.149.1 | SUSE-SU-2023:3681-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.176.1 | SUSE-SU-2023:3705-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.141.1 | SUSE-SU-2023:3601-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.133.1 | SUSE-SU-2023:3684-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.133.1.150300.18.78.1 | SUSE-SU-2023:3684-1 |
| SLE Micro 5.2 | kernel-rt | 5.3.18-150300.141.1 | SUSE-SU-2023:3785-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-150300.59.133.1 | SUSE-SU-2023:3684-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-150300.59.133.1.150300.18.78.1 | SUSE-SU-2023:3684-1 |
| SLE Micro 5.1 | kernel-rt | 5.3.18-150300.141.1 | SUSE-SU-2023:3785-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-150300.59.133.1 | SUSE-SU-2023:3684-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_36 | 1-150300.7.3.1 | SUSE-SU-2023:3684-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-150200.24.163.1 | SUSE-SU-2023:3687-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_40 | 1-150200.5.3.1 | SUSE-SU-2023:3687-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-150100.197.157.1 | SUSE-SU-2023:3680-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_44 | 1-150100.3.3.1 | SUSE-SU-2023:3680-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.176.1 | SUSE-SU-2023:3705-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_48 | 1-8.3.1 | SUSE-SU-2023:3705-1 |
| SLE HPC 15 SP3 | kernel-64kb +6 | 5.3.18-150300.59.133.1 | SUSE-SU-2023:3684-1 |
| SLE HPC 15 SP3 | kernel-default-base | 5.3.18-150300.59.133.1.150300.18.78.1 | SUSE-SU-2023:3684-1 |
| SLE HPC 15 SP2 | kernel-default-base | 5.3.18-150200.24.163.1.150200.9.81.1 | SUSE-SU-2023:3687-1 |
| SLE HPC 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.163.1 | SUSE-SU-2023:3687-1 |
| SLE HPC 15 SP1 | kernel-docs +4 | 4.12.14-150100.197.157.1 | SUSE-SU-2023:3680-1 |
| SUSE Manager Server 4.2 | kernel-default-base | 5.3.18-150300.59.133.1.150300.18.78.1 | SUSE-SU-2023:3684-1 |
| SUSE Manager Server 4.2 | kernel-source +3 | 5.3.18-150300.59.133.1 | SUSE-SU-2023:3684-1 |
| SUSE Manager Proxy 4.2 | kernel-default-base | 5.3.18-150300.59.133.1.150300.18.78.1 | SUSE-SU-2023:3684-1 |
| SUSE Manager Proxy 4.2 | kernel-source +2 | 5.3.18-150300.59.133.1 | SUSE-SU-2023:3684-1 |
| SUSE Enterprise Storage 7.1 | kernel-64kb +6 | 5.3.18-150300.59.133.1 | SUSE-SU-2023:3684-1 |
| SUSE Enterprise Storage 7.1 | kernel-default-base | 5.3.18-150300.59.133.1.150300.18.78.1 | SUSE-SU-2023:3684-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | kernel-vanilla | 4.12.14-150100.197.157.1 | SUSE-SU-2023:3680-1 |
| openSUSE Leap 15.4 | dtb-aarch64 | 5.3.18-150300.59.133.1 | SUSE-SU-2023:3684-1 |
| openSUSE Leap 15.4 | kernel-debug +4 | 4.12.14-150100.197.157.1 | SUSE-SU-2023:3680-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.126.1-1 | — |
Advisories 10
- USN-6388-1 linux, linux-aws, linux-kvm, linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Oct 22, 2026
- SUSE-SU-2023:3680-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3684-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:4028-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3601-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3785-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3681-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3705-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2023:3687-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2023-2077 Linux Kernel: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Jan 28, 2024