CVE-2023-52749

CVE Details

Release Date:	2024-05-21
Impact:	Low	What is this?

Description

In the Linux kernel, the following vulnerability has been resolved:\nspi: Fix null dereference on suspend\nA race condition exists where a synchronous (noqueue) transfer can be\nactive during a system suspend. This can cause a null pointer\ndereference exception to occur when the system resumes.\nExample order of events leading to the exception:\n1. spi_sync() calls __spi_transfer_message_noqueue() which sets\nctlr->cur_msg\n2. Spi transfer begins via spi_transfer_one_message()\n3. System is suspended interrupting the transfer context\n4. System is resumed\n6. spi_controller_resume() calls spi_start_queue() which resets cur_msg\nto NULL\n7. Spi transfer context resumes and spi_finalize_current_message() is\ncalled which dereferences cur_msg (which is now NULL)\nWait for synchronous transfers to complete before suspending by\nacquiring the bus mutex and setting/checking a suspend flag.

See more information about CVE-2023-52749 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:	4.4
Vector String:	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Local
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