CVE-2024-26672

CVE Details

Release Date:

2024-04-02

Description

In the Linux kernel, the following vulnerability has been resolved:\ndrm/amdgpu: Fix variable 'mca_funcs' dereferenced before NULL check in 'amdgpu_mca_smu_get_mca_entry()'\nFixes the below:\ndrivers/gpu/drm/amd/amdgpu/amdgpu_mca.c:377 amdgpu_mca_smu_get_mca_entry() warn: variable dereferenced before check 'mca_funcs' (see line 368)\n357 int amdgpu_mca_smu_get_mca_entry(struct amdgpu_device *adev,\nenum amdgpu_mca_error_type type,\n358 int idx, struct mca_bank_entry *entry)\n359 {\n360 const struct amdgpu_mca_smu_funcs *mca_funcs =\nadev->mca.mca_funcs;\n361 int count;\n362\n363 switch (type) {\n364 case AMDGPU_MCA_ERROR_TYPE_UE:\n365 count = mca_funcs->max_ue_count;\nmca_funcs is dereferenced here.\n366 break;\n367 case AMDGPU_MCA_ERROR_TYPE_CE:\n368 count = mca_funcs->max_ce_count;\nmca_funcs is dereferenced here.\n369 break;\n370 default:\n371 return -EINVAL;\n372 }\n373\n374 if (idx >= count)\n375 return -EINVAL;\n376\n377 if (mca_funcs && mca_funcs->mca_get_mca_entry)\n^^^^^^^^^\nChecked too late!

See more information about CVE-2024-26672 from MITRE CVE dictionary and NIST NVD

CVSS Scoring

NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score:	4.4	CVSS Vector:	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack Vector:	Local network	Attack Complexity:	Low
Privileges Required:	High	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 9 (kernel)	ELSA-2024-9315	2024-11-14