CVE-2024-50156

CVE Details

Release Date:

2024-11-07

Description

In the Linux kernel, the following vulnerability has been resolved:\ndrm/msm: Avoid NULL dereference in msm_disp_state_print_regs()\nIf the allocation in msm_disp_state_dump_regs() failed then\n`block->state` can be NULL. The msm_disp_state_print_regs() function\n_does_ have code to try to handle it with:\nif (*reg)\ndump_addr = *reg;\n...but since 'dump_addr' is initialized to NULL the above is actually\na noop. The code then goes on to dereference `dump_addr`.\nMake the function print 'Registers not stored' when it sees a NULL to\nsolve this. Since we're touching the code, fix\nmsm_disp_state_print_regs() not to pointlessly take a double-pointer\nand properly mark the pointer as `const`.\nPatchwork: https://patchwork.freedesktop.org/patch/619657/

See more information about CVE-2024-50156 from MITRE CVE dictionary and NIST NVD

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

CVSS v3 metrics

Base Score:	5.5
Vector String:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality:	None
Integrity:	None
Availability:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12887	2024-12-18
Oracle Linux version 9 (kernel-uek)	ELSA-2024-12887	2024-12-18