Linux Kernel up to 6.18.2/6.19-rc2 a7xx_patch_pwrup_reglist null pointer dereference

Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 6.18.2/6.19-rc2. This vulnerability affects the function a7xx_patch_pwrup_reglist. Executing a manipulation can lead to null pointer dereference. This vulnerability is registered as CVE-2025-71103. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.2/6.19-rc2. It has been declared as critical. This vulnerability affects the function a7xx_patch_pwrup_reglist. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: drm/msm: adreno: fix deferencing ifpc_reglist when not declared On plaforms with an a7xx GPU not supporting IFPC, the ifpc_reglist if still deferenced in a7xx_patch_pwrup_reglist() which causes a kernel crash: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 ... pc : a6xx_hw_init+0x155c/0x1e4c [msm] lr : a6xx_hw_init+0x9a8/0x1e4c [msm] ... Call trace: a6xx_hw_init+0x155c/0x1e4c [msm] (P) msm_gpu_hw_init+0x58/0x88 [msm] adreno_load_gpu+0x94/0x1fc [msm] msm_open+0xe4/0xf4 [msm] drm_file_alloc+0x1a0/0x2e4 [drm] drm_client_init+0x7c/0x104 [drm] drm_fbdev_client_setup+0x94/0xcf0 [drm_client_lib] drm_client_setup+0xb4/0xd8 [drm_client_lib] msm_drm_kms_post_init+0x2c/0x3c [msm] msm_drm_init+0x1a4/0x228 [msm] msm_drm_bind+0x30/0x3c [msm] ... Check the validity of ifpc_reglist before deferencing the table to setup the register values. Patchwork: https://patchwork.freedesktop.org/patch/688944/

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2025-71103 since 01/13/2026. The exploitation appears to be difficult. There are known technical details, but no exploit is available.

Upgrading to version 6.18.3 or 6.19-rc3 eliminates this vulnerability. Applying the patch 19648135e904bce447d368ecb6136e5da809639c/129049d4fe22c998ae9fd1ec479fbb4ed5338c15 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-0119). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

• Debian Linux
• Amazon Linux 2
• SUSE Linux
• Oracle Linux
• SUSE openSUSE
• Open Source Linux Kernel

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.18.0
• 6.18.1
• 6.18.2
• 6.19-rc1
• 6.19-rc2

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion