CVE-2024-50096

CVE Details

Release Date:

2024-11-05

Description

In the Linux kernel, the following vulnerability has been resolved:\nnouveau/dmem: Fix vulnerability in migrate_to_ram upon copy error\nThe `nouveau_dmem_copy_one` function ensures that the copy push command is\nsent to the device firmware but does not track whether it was executed\nsuccessfully.\nIn the case of a copy error (e.g., firmware or hardware failure), the\ncopy push command will be sent via the firmware channel, and\n`nouveau_dmem_copy_one` will likely report success, leading to the\n`migrate_to_ram` function returning a dirty HIGH_USER page to the user.\nThis can result in a security vulnerability, as a HIGH_USER page that may\ncontain sensitive or corrupted data could be returned to the user.\nTo prevent this vulnerability, we allocate a zero page. Thus, in case of\nan error, a non-dirty (zero) page will be returned to the user.

See more information about CVE-2024-50096 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 7 (kernel-uek)	ELSA-2024-12884	2024-12-16
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12884	2024-12-16
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12887	2024-12-18
Oracle Linux version 9 (kernel-uek)	ELSA-2024-12887	2024-12-18