CVE-2025-39807 — NULL Pointer Dereference in Linux

CWE-476 — NULL Pointer Dereference22 documents6 sources
Severity
5.5MEDIUMNVD
OSV3.2
EPSS
0.0%
top 97.72%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
LinuxLinux KernelDebian Linux
Timeline
PublishedSep 16
Latest updateApr 9

Description

In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Add error handling for old state CRTC in atomic_disable Introduce error handling to address an issue where, after a hotplug event, the cursor continues to update. This situation can lead to a kernel panic due to accessing the NULL `old_state->crtc`. E,g. Unable to handle kernel NULL pointer dereference at virtual address Call trace: mtk_crtc_plane_disable+0x24/0x140 mtk_plane_atomic_update+0x8c/0xa8 drm_atomic_h…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages5 packages

▶NVDlinux/linux_kernel6.12.40 — 6.12.45+4
▶Debianlinux/linux_kernel< 6.12.48-1+1
▶Ubuntulinux/linux_kernel< 6.8.0-106.106
▶CVEListV5linux/linux40b5b4ba8ed87c0bfb6268c10589777652ebde4c — 7d5cc22efa44e0fe321ce195c71c3d7da211fbb2+4
▶debiandebian/linux< linux 6.16.5-1 (forky)

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

10
OSV
linux-raspi, linux-raspi-realtime vulnerabilities↗2026-04-01
▶
OSV
linux-azure-6.8 vulnerabilities↗2026-03-25
▶
OSV
linux-azure vulnerabilities↗2026-03-25
▶
OSV
linux-aws-6.8 vulnerabilities↗2026-03-23
▶
OSV
linux-realtime, linux-realtime-6.8 vulnerabilities↗2026-03-17
▶

📋Vendor Advisories

11
Ubuntu
Linux kernel (Azure FIPS) vulnerabilities↗2026-04-09
▶
Ubuntu
Linux kernel (Raspberry Pi) vulnerabilities↗2026-04-01
▶
Ubuntu
Linux kernel (Azure) vulnerabilities↗2026-03-25
▶
Ubuntu
Linux kernel (Azure) vulnerabilities↗2026-03-25
▶
Ubuntu
Linux kernel (AWS) vulnerabilities↗2026-03-23
▶
CVE-2025-39807 — NULL Pointer Dereference in Linux | cvebase