Unchecked Return Value in Linux kernel - CVE-2026-98783

Vulnerability identifier: #VU157147

CSH Severity: Low

CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-98783

CWE-ID: CWE-252

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to potentially cause a denial of service through a kernel crash.

The vulnerability exists due to an unchecked error return in the MediaTek DRM driver's mtk_drm_probe() function when registering the ovl_adaptor platform device. A local user can potentially trigger a kernel crash if able to induce a platform_device_register_data() failure, because the returned error pointer is used without validation and an invalid pointer is passed to subsequent component operations.

Linux kernel
SUSE Linux Micro
SUSE Linux Micro Extras
kernel-default
kernel-64kb
kernel-64kb-debugsource
kernel-64kb-devel
kernel-default-devel
kernel-syms
kernel-obs-build
kernel-obs-build-debugsource
kernel-default-debugsource
kernel-default-devel-debuginfo

Install security update from vendor's repository.

Linux kernel - update to 7.0 rc3
kernel-default - update to 6.4.0-159998.55.1
kernel-64kb - update to 6.4.0-159998.55.1
kernel-64kb-debugsource - update to 6.4.0-159998.55.1
kernel-64kb-devel - update to 6.4.0-159998.55.1
kernel-default-devel - update to 6.4.0-159998.55.1
kernel-syms - update to 6.4.0-159998.55.1
kernel-obs-build - update to 6.4.0-159998.55.1
kernel-obs-build-debugsource - update to 6.4.0-159998.55.1
kernel-default-debugsource - update to 6.4.0-159998.55.1
kernel-default-devel-debuginfo - update to 6.4.0-159998.55.1

• https://git.kernel.org/stable/c/4acac370aad2d4895a82f40b2f03e9ef70eecaa6
• https://git.kernel.org/stable/c/88f8a92dcb0cb154774595dee7226458de4cbd38
• https://git.kernel.org/stable/c/aeef8a8537bcfb26689edb36ed905b8b2873001c
• https://git.kernel.org/stable/c/bce7698e2e6565bb765bd0522337f29f5f312624
• https://git.kernel.org/stable/c/f0ffb09cf1bf2a0f301f51fb45371c09dc78fcd0

• Unchecked Return Value in Linux kernel drm mediatek driver
• SUSE update for the Linux Kernel