Double free in Linux kernel - CVE-2026-74519

Vulnerability identifier: #VU143254

CSH Severity: Low

CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-74519

CWE-ID: CWE-415

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to cause a denial of service.

The vulnerability exists due to double free in dt_remember_or_free_map() and dt_free_map() in the pinctrl devicetree code when handling a failed dev_name duplication during map initialization. A local attacker can trigger a memory allocation failure during device binding to cause a denial of service.

Exploitation was demonstrated with failslab injection while binding a pinctrl-consuming device.

Linux kernel
Debian Linux
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Live Patching
kgraft-patch-4_12_14-122_328-default
dlm-kmp-default
kernel-default-man
kernel-macros
kernel-devel
kernel-source
kernel-default-devel-debuginfo
kernel-default-base
kernel-default-devel
cluster-md-kmp-default
gfs2-kmp-default
ocfs2-kmp-default-debuginfo
gfs2-kmp-default-debuginfo
ocfs2-kmp-default
kernel-default-base-debuginfo
dlm-kmp-default-debuginfo
cluster-md-kmp-default-debuginfo
kernel-syms
kernel-default-kgraft
kernel-default-debuginfo
kernel-default-kgraft-devel
kernel-default-debugsource
kernel-default
linux (Debian package)

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kgraft-patch-4_12_14-122_328-default - update to 1-8.5.1
dlm-kmp-default - update to 4.12.14-122.328.1
kernel-default-man - update to 4.12.14-122.328.1
kernel-macros - update to 4.12.14-122.328.1
kernel-devel - update to 4.12.14-122.328.1
kernel-source - update to 4.12.14-122.328.1
kernel-default-devel-debuginfo - update to 4.12.14-122.328.1
kernel-default-base - update to 4.12.14-122.328.1
kernel-default-devel - update to 4.12.14-122.328.1
cluster-md-kmp-default - update to 4.12.14-122.328.1
gfs2-kmp-default - update to 4.12.14-122.328.1
ocfs2-kmp-default-debuginfo - update to 4.12.14-122.328.1
gfs2-kmp-default-debuginfo - update to 4.12.14-122.328.1
ocfs2-kmp-default - update to 4.12.14-122.328.1
kernel-default-base-debuginfo - update to 4.12.14-122.328.1
dlm-kmp-default-debuginfo - update to 4.12.14-122.328.1
cluster-md-kmp-default-debuginfo - update to 4.12.14-122.328.1
kernel-syms - update to 4.12.14-122.328.1
kernel-default-kgraft - update to 4.12.14-122.328.1
kernel-default-debuginfo - update to 4.12.14-122.328.1
kernel-default-kgraft-devel - update to 4.12.14-122.328.1
kernel-default-debugsource - update to 4.12.14-122.328.1
kernel-default - update to 4.12.14-122.328.1
linux (Debian package) - update to 6.12.105-1

• https://git.kernel.org/stable/c/015b5bcbcb622b32317642be91a7f79aa5413649
• https://git.kernel.org/stable/c/321fe3584a8298386938130d138191aa35040b75
• https://git.kernel.org/stable/c/929f6396baade89999ec8a1281232c101cbc727d
• https://git.kernel.org/stable/c/9d00a5ac7cd3d32ae61140f4b8a62f136de84e7d
• https://git.kernel.org/stable/c/ad0ad3c228b6f76fde10f32047e0ec5fbc109dc8

• Double free in Linux kernel pinctrl driver
• Debian update for linux
• SUSE update for the Linux Kernel