Description
In the Linux kernel, the following vulnerability has been resolved:
dlm: validate length in dlm_search_rsb_tree
The len parameter in dlm_dump_rsb_name() is not validated and comes
from network messages. When it exceeds DLM_RESNAME_MAXLEN, it can
cause out-of-bounds write in dlm_search_rsb_tree().
Add length validation to prevent potential buffer overflow.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 3.4 | 5.15.224 |
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 | 6.19.6-1 | — |
| Debian 13 | linux | 6.12.85-1 | — |
| Debian 12 | linux | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | linux | 6.17.0-40.40 | USN-8490-1 |
| Ubuntu 25.10 | linux-aws | 6.17.0-1019.19 | USN-8490-1 |
| Ubuntu 25.10 | linux-azure +1 | No fix yet | — |
| Ubuntu 25.10 | linux-gcp | 6.17.0-1020.22 | USN-8490-1 |
| Ubuntu 25.10 | linux-oracle | 6.17.0-1018.18 | USN-8490-1 |
| Ubuntu 25.10 | linux-raspi | 6.17.0-1021.21 | USN-8546-1 |
| Ubuntu 25.10 | linux-realtime | 6.17.0-1017.19 | USN-8490-2 |
| Ubuntu 25.10 | linux-riscv | 6.17.0-40.40.1 | — |
| Ubuntu 24.04 LTS | linux-aws-6.17 | 6.17.0-1019.19~24.04.1 | USN-8490-1 |
| Ubuntu 24.04 LTS | linux-azure-6.17 | 6.17.0-1021.21~24.04.1 | USN-8604-1 |
| Ubuntu 24.04 LTS | linux-gcp-6.17 | 6.17.0-1020.22~24.04.1 | USN-8490-1 |
| Ubuntu 24.04 LTS | linux-hwe-6.17 | 6.17.0-40.40~24.04.1 | USN-8545-1 |
| Ubuntu 24.04 LTS | linux-nvidia-6.17 | 6.17.0-1026.26 | USN-8508-1 |
| Ubuntu 24.04 LTS | linux-oem-6.17 | 6.17.0-1028.28 | USN-8491-1 |
| Ubuntu 24.04 LTS | linux-oracle-6.17 +1 | 6.17.0-1018.18~24.04.1 | USN-8605-1, USN-8490-1 |
| Ubuntu 24.04 LTS | linux-riscv +19 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 2 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 24.04 LTS | linux-realtime-6.14 | No fix yet | — |
| Ubuntu Pro Realtime 24.04 LTS | linux-realtime-6.17 | 6.17.0-1017.19~24.04.1 | USN-8490-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | kpatch-patch-5_14_0-687_10_1 | 1-6.el9_8 | RHSA-2026:55763 |
| RHEL 9 | rv +75 | 5.14.0-687.15.1.el9_8 | RHSA-2026:25217 |
| RHEL 8 | kernel-rt +12 | 4.18.0-553.132.1.rt7.473.el8_10 | RHSA-2026:25120 |
| RHEL 8 | kpatch-patch-4_18_0-553_109_1 | 1-9.el8_10 | RHSA-2026:55762 |
| RHEL 8 | kpatch-patch-4_18_0-553_125_1 | 1-6.el8_10 | RHSA-2026:55762 |
| RHEL 8 | kpatch-patch-4_18_0-553_53_1 | 1-16.el8_10 | RHSA-2026:55762 |
| RHEL 8 | kpatch-patch-4_18_0-553_72_1 | 1-13.el8_10 | RHSA-2026:55762 |
| RHEL 8 | kpatch-patch-4_18_0-553_85_1 | 1-11.el8_10 | RHSA-2026:55762 |
| RHEL 8 | perf +26 | 4.18.0-553.132.1.el8_10 | RHSA-2026:25121 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Extras Rt Els 7 | kernel-rt +7 | 3.10.0-1160.155.1.rt56.1307.el7 | RHSA-2026:41236 |
| RHEL 9.6 EUS | kpatch-patch-5_14_0-570_116_1 | 1-7.el9_6 | RHSA-2026:56225 |
| RHEL 9.6 EUS | kpatch-patch-5_14_0-570_17_1 | 1-22.el9_6 | RHSA-2026:56225 |
| RHEL 9.6 EUS | kpatch-patch-5_14_0-570_39_1 | 1-13.el9_6 | RHSA-2026:56225 |
| RHEL 9.6 EUS | kpatch-patch-5_14_0-570_66_1 | 1-12.el9_6 | RHSA-2026:56225 |
| RHEL 9.6 EUS | kpatch-patch-5_14_0-570_94_1 | 1-10.el9_6 | RHSA-2026:56225 |
| RHEL 9.6 EUS | rv +77 | 5.14.0-570.125.1.el9_6 | RHSA-2026:34094 |
| RHEL 9.4 E4S | bpftool | 7.3.0-427.136.1.el9_4 | RHSA-2026:36767 |
| RHEL 9.4 E4S | kpatch-patch-5_14_0-427_100_1 | 1-12.el9_4 | RHSA-2026:56224 |
| RHEL 9.4 E4S | kpatch-patch-5_14_0-427_113_1 | 1-10.el9_4 | RHSA-2026:56224 |
| RHEL 9.4 E4S | kpatch-patch-5_14_0-427_126_1 | 1-7.el9_4 | RHSA-2026:56224 |
| RHEL 9.4 E4S | kpatch-patch-5_14_0-427_68_2 | 1-19.el9_4 | RHSA-2026:56224 |
| RHEL 9.4 E4S | kpatch-patch-5_14_0-427_84_1 | 1-14.el9_4 | RHSA-2026:56224 |
| RHEL 9.4 E4S | rv +62 | 5.14.0-427.136.1.el9_4 | RHSA-2026:36767 |
| RHEL 9.2 E4S | bpftool | 7.0.0-284.178.1.el9_2 | RHSA-2026:34095 |
| RHEL 9.2 E4S | kernel-rt +14 | 5.14.0-284.178.1.rt14.463.el9_2 | RHSA-2026:33900 |
| RHEL 9.2 E4S | kpatch-patch-5_14_0-284_117_1 | 1-19.el9_2 | RHSA-2026:55837 |
| RHEL 9.2 E4S | kpatch-patch-5_14_0-284_134_1 | 1-13.el9_2 | RHSA-2026:55837 |
| RHEL 9.2 E4S | kpatch-patch-5_14_0-284_148_1 | 1-11.el9_2 | RHSA-2026:55837 |
| RHEL 9.2 E4S | kpatch-patch-5_14_0-284_158_1 | 1-9.el9_2 | RHSA-2026:55837 |
| RHEL 9.2 E4S | kpatch-patch-5_14_0-284_172_1 | 1-6.el9_2 | RHSA-2026:55837 |
| RHEL 9.2 E4S | perf +47 | 5.14.0-284.178.1.el9_2 | RHSA-2026:34095 |
| RHEL 8.8 TUS | perf +17 | 4.18.0-477.150.1.el8_8 | RHSA-2026:35863 |
| RHEL 8.8 E4S | kpatch-patch-4_18_0-477_107_1 | 1-12.el8_8 | RHSA-2026:55761 |
| RHEL 8.8 E4S | kpatch-patch-4_18_0-477_120_1 | 1-11.el8_8 | RHSA-2026:55761 |
| RHEL 8.8 E4S | kpatch-patch-4_18_0-477_130_1 | 1-9.el8_8 | RHSA-2026:55761 |
| RHEL 8.8 E4S | kpatch-patch-4_18_0-477_143_1 | 1-5.el8_8 | RHSA-2026:55761 |
| RHEL 8.8 E4S | kpatch-patch-4_18_0-477_97_1 | 1-16.el8_8 | RHSA-2026:55761 |
| RHEL 8.8 E4S | perf +18 | 4.18.0-477.150.1.el8_8 | RHSA-2026:35863 |
| RHEL 8.6 EUS Long Life | perf +17 | 4.18.0-372.198.1.el8_6 | RHSA-2026:33899 |
| RHEL 8.6 AUS | perf +17 | 4.18.0-372.198.1.el8_6 | RHSA-2026:33899 |
| RHEL 8.4 EUS Long Life | perf +17 | 4.18.0-305.201.1.el8_4 | RHSA-2026:59091 |
| RHEL 8.4 AUS | perf +17 | 4.18.0-305.201.1.el8_4 | RHSA-2026:59091 |
| RHEL 7 ELS | perf +18 | 3.10.0-1160.154.1.el7 | RHSA-2026:35844 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | rv +73 | 5.14.0-687.15.1.el9_8 | ALSA-2026:25217 |
| AlmaLinux 8 | kernel-rt +9 | 4.18.0-553.132.1.rt7.473.el8_10 | ALSA-2026:25120 |
| AlmaLinux 8 | perf +24 | 4.18.0-553.132.1.el8_10 | ALSA-2026:25121 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | kernel | 5.14.0-687.15.1.el9_7.cloud.1.0 | RXSA-2026:25217, RLSA-2026:25217 |
| Rocky Linux 8 | kernel | 4.18.0-553.132.1.el8_10 | RXSA-2026:25121, RLSA-2026:25121 |
| Rocky Linux 8 | kernel-rt | 4.18.0-553.132.1.rt7.473.el8_10 | RLSA-2026:25120 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | kernel-64kb +7 | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 |
| SLES 15 SP7 | kernel-default-base | 6.4.0-150700.53.81.1.150700.17.45.1 | SUSE-SU-2026:4254-1 |
| SLES 12 SP5 | kernel-syms +2 | 4.12.14-122.328.1 | SUSE-SU-2026:4282-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | kernel-64kb +8 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1 |
| SLES for SAP 16.0 | kernel-default-base | 6.12.0-160000.38.1.160000.2.23 | SUSE-SU-2026:23902-1 |
| SLES 16.0 | kernel-64kb +8 | 6.12.0-160000.38.1 | SUSE-SU-2026:23902-1, SUSE-SU-2026:23897-1 |
| SLES 16.0 | kernel-default-base | 6.12.0-160000.38.1.160000.2.23 | SUSE-SU-2026:23902-1 |
| SLE Micro 6.2 | kernel-default-base | 6.12.0-160000.38.1.160000.2.23 | SUSE-SU-2026:23887-1 |
| SLE Micro 6.2 | kernel-rt +5 | 6.12.0-160000.38.1 | SUSE-SU-2026:23887-1, SUSE-SU-2026:23881-1 |
| SLE Micro 6.1 | kernel-default-base | 6.4.0-52.1.21.34 | SUSE-SU-2026:23529-1 |
| SLE Micro 6.1 | kernel-rt +4 | 6.4.0-52.1 | SUSE-SU-2026:23529-1, SUSE-SU-2026:23528-1 |
| SLE Micro 6.0 | kernel-default-base | 6.4.0-52.1.21.36 | SUSE-SU-2026:23481-1 |
| SLE Micro 6.0 | kernel-rt +4 | 6.4.0-52.1 | SUSE-SU-2026:23481-1, SUSE-SU-2026:23477-1 |
| SLE Live Patching 15 SP7 | kernel-default | 6.4.0-150700.53.81.1 | SUSE-SU-2026:4254-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7-RT_Update_20 | 1-150700.1.3.1 | SUSE-SU-2026:4120-1 |
| SLE Live Patching 15 SP7 | kernel-livepatch-SLE15-SP7_Update_21 | 1-150700.15.3.1 | SUSE-SU-2026:4254-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.328.1 | SUSE-SU-2026:4282-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_87 | 1-8.5.1 | SUSE-SU-2026:4282-1 |
| SUSE Real Time Module 15 SP7 | kernel-rt +2 | 6.4.0-150700.7.75.1 | SUSE-SU-2026:4120-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.1 | kernel-default-base | 6.12.0-160100.9.1.160100.3.14 | openSUSE-SU-2026:22309-1 |
| openSUSE Leap 16.1 | kernel-rt +11 | 6.12.0-160100.9.1 | openSUSE-SU-2026:22309-1 |
| openSUSE Leap 16.0 | kernel-default-base | 6.12.0-160000.38.1.160000.2.22 | openSUSE-SU-2026:21910-1 |
| openSUSE Leap 16.0 | kernel-rt +11 | 6.12.0-160000.38.1 | openSUSE-SU-2026:21910-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | kernel | No fix yet | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | kernel-uek +34 | 6.12.0-204.92.4.2.el10uek | ELSA-2026-50372 |
| Oracle Linux 9 | rv +28 | 5.14.0-687.17.1.el9_8 | ELSA-2026-25217 |
| Oracle Linux 8 | perf +19 | 4.18.0-553.132.1.el8_10 | ELSA-2026-25121 |
Advisories 50
- openSUSE-SU-2026:22309-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Nov 14, 2026
- RHSA-2026:59091 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:41236 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:35863 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:33899 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:33900 Red Hat Security Advisory: kernel-rt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:34094 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:34095 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:35844 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- RHSA-2026:25217 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Nov 13, 2026
- WID-SEC-2026-1405 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- USN-8604-1 linux-azure-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8490-2 linux-realtime, linux-realtime-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8508-1 linux-nvidia-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8546-1 linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8491-1 linux-oem-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8545-1 linux-hwe-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- USN-8490-1 linux, linux-aws, linux-aws-6.17, linux-gcp, linux-gcp-6.17, linux-oracle, linux-oracle-6.17 vulnerabilities Ubuntu Security Notices (USN) · Nov 7, 2026
- ALSA-2026:25217 Important: kernel security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:25121 Critical: kernel security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:25120 Critical: kernel-rt security update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2026:25121 Red Hat Security Advisory: kernel security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:25120 Red Hat Security Advisory: kernel-rt security update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- WID-SEC-2026-3623 IBM DataPower Gateway: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 18, 2026
- USN-8605-1 linux-azure-fde-6.17 vulnerabilities Ubuntu Security Notices (USN) · Oct 17, 2026
- RHSA-2026:36767 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- NCSC-2026-0431 Kwetsbaarheden verholpen in IBM DataPower Gateway en onderliggende componenten NCSC-NL (Netherlands) · Oct 16, 2026
- RHSA-2026:56225 Red Hat Security Advisory: kpatch-patch-5_14_0-570_116_1, kpatch-patch-5_14_0-570_17_1, kpatch-patch-5_14_0-570_39_1, kpatch-patch-5_14_0-570_66_1, and kpatch-patch-5_14_0-570_94_1 security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RHSA-2026:56224 Red Hat Security Advisory: kpatch-patch-5_14_0-427_100_1, kpatch-patch-5_14_0-427_113_1, kpatch-patch-5_14_0-427_126_1, kpatch-patch-5_14_0-427_68_2, and kpatch-patch-5_14_0-427_84_1 security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RHSA-2026:55837 Red Hat Security Advisory: kpatch-patch-5_14_0-284_117_1, kpatch-patch-5_14_0-284_134_1, kpatch-patch-5_14_0-284_148_1, kpatch-patch-5_14_0-284_158_1, and kpatch-patch-5_14_0-284_172_1 security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RHSA-2026:55762 Red Hat Security Advisory: kpatch-patch-4_18_0-553_109_1, kpatch-patch-4_18_0-553_125_1, kpatch-patch-4_18_0-553_53_1, kpatch-patch-4_18_0-553_72_1, and kpatch-patch-4_18_0-553_85_1 security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RHSA-2026:55763 Red Hat Security Advisory: kpatch-patch-5_14_0-687_10_1 security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- RHSA-2026:55761 Red Hat Security Advisory: kpatch-patch-4_18_0-477_107_1, kpatch-patch-4_18_0-477_120_1, kpatch-patch-4_18_0-477_130_1, kpatch-patch-4_18_0-477_143_1, and kpatch-patch-4_18_0-477_97_1 security update Red Hat Security Advisories (RHSA) · Oct 10, 2026
- SUSE-SU-2026:4254-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Oct 8, 2026
- SUSE-SU-2026:23902-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 30, 2026
- SUSE-SU-2026:23897-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 30, 2026
- SUSE-SU-2026:23881-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 30, 2026
- SUSE-SU-2026:23887-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 30, 2026
- openSUSE-SU-2026:21910-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 25, 2026
- SUSE-SU-2026:4282-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 23, 2026
- SUSE-SU-2026:23528-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 15, 2026
- SUSE-SU-2026:23529-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 15, 2026
- SUSE-SU-2026:23477-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 14, 2026
- SUSE-SU-2026:4120-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 14, 2026
- SUSE-SU-2026:23481-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Sep 14, 2026
- ELSA-2026-50372 Important: Unbreakable Enterprise kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 2, 2026
- ELSA-2026-25217 Important: kernel security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jun 29, 2026
- RXSA-2026:25217 Important: kernel security update Rocky Linux Security Advisories · Jun 15, 2026
- RXSA-2026:25121 Critical: kernel security update Rocky Linux Security Advisories · Jun 15, 2026
- ELSA-2026-25121 Critical: kernel security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jun 15, 2026
References
- https://git.kernel.org/stable/c/0270664871616eb3a5c864b9aa17be76fd35b920
- https://git.kernel.org/stable/c/c98d071a1ca903b705316225e47006aaa20e989c
- https://git.kernel.org/stable/c/2deafd015ea9a0e75ee5764e20eb1e16bd73efd8
- https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71
- https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6
- https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438
- https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882