CVE-2026-43125

EUVD-2026-27688
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 41%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
3.4 ≤
𝑥
< 6.12.75
linuxlinux_kernel
6.13 ≤
𝑥
< 6.18.16
linuxlinux_kernel
6.19 ≤
𝑥
< 6.19.6
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
vulnerable
bookworm (security)
vulnerable
bullseye
vulnerable
bullseye (security)
vulnerable
forky
7.0.12-2
fixed
sid
7.0.13-1
fixed
trixie
6.12.86-1
fixed
trixie (security)
6.12.94-1
fixed
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
bpftool
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
kernel
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-debug
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-debug-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-debug-devel
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-debug-devel-matched
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-debug-modules
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-debug-modules-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-debug-modules-extra
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-devel
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-devel-matched
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-modules
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-modules-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-64k-modules-extra
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-abi-stablelists
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-core
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-debug
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-debug-core
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-debug-devel
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-debug-devel-matched
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-debug-modules
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-debug-modules-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-debug-modules-extra
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-debug-uki-virt
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-devel
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-devel-matched
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-doc
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-modules
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-modules-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-modules-extra
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt
RHEL 8
0:4.18.0-553.132.1.rt7.473.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-64k
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-64k-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-64k-debug
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-64k-debug-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-64k-debug-devel
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-64k-debug-modules
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-64k-debug-modules-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-64k-debug-modules-extra
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-64k-devel
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-64k-modules
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-64k-modules-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-64k-modules-extra
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-core
RHEL 8
0:4.18.0-553.132.1.rt7.473.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-debug
RHEL 8
0:4.18.0-553.132.1.rt7.473.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-debug-core
RHEL 8
0:4.18.0-553.132.1.rt7.473.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-debug-devel
RHEL 8
0:4.18.0-553.132.1.rt7.473.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-debug-kvm
RHEL 8
0:4.18.0-553.132.1.rt7.473.el8_10
fixed
kernel-rt-debug-modules
RHEL 8
0:4.18.0-553.132.1.rt7.473.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-debug-modules-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-debug-modules-extra
RHEL 8
0:4.18.0-553.132.1.rt7.473.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-devel
RHEL 8
0:4.18.0-553.132.1.rt7.473.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-kvm
RHEL 8
0:4.18.0-553.132.1.rt7.473.el8_10
fixed
kernel-rt-modules
RHEL 8
0:4.18.0-553.132.1.rt7.473.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-modules-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-rt-modules-extra
RHEL 8
0:4.18.0-553.132.1.rt7.473.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-tools
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-tools-libs
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-tools-libs-devel
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-uki-virt
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-uki-virt-addons
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-zfcpdump
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-zfcpdump-core
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-zfcpdump-devel
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-zfcpdump-devel-matched
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-zfcpdump-modules
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-zfcpdump-modules-core
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
kernel-zfcpdump-modules-extra
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
libperf
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
perf
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
python3-perf
RHEL 8
0:4.18.0-553.132.1.el8_10
fixed
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
rtla
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
rv
RHEL 9
0:5.14.0-687.15.1.el9_8
fixed
Common Weakness Enumeration
Vulnerability Media Exposure
References
https://git.kernel.org/stable/c/080e5563f878c64e697b89e7439d730d0daad882
https://git.kernel.org/stable/c/082083c9fbd99422a0370fe2102144a231c9f5d6
https://git.kernel.org/stable/c/5f053a2e7209d326cbbc07738fa6d6893d307438
https://git.kernel.org/stable/c/67288113c5e6cf9e659b4065c0ed6f16100e0c71