Oracle Linux: CVE-2023-0266: ELSA-2023-1566: kernel security, bug fix, and enhancement update (IMPORTANT) (Multiple Advisories)

Oracle Linux: CVE-2023-0266: ELSA-2023-1566:kernel security, bug fix, and enhancement update (IMPORTANT) (Multiple Advisories)

Severity

7

CVSS

(AV:L/AC:L/Au:S/C:C/I:C/A:C)

Published

01/13/2023

Created

03/22/2023

Added

03/17/2023

Modified

02/14/2025

Description

A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel. SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit 56b88b50565cd8b946a2d00b0c83927b7ebb055e A use-after-free flaw was found in snd_ctl_elem_read in sound/core/control.c in Advanced Linux Sound Architecture (ALSA) subsystem in the Linux kernel. In this flaw a normal privileged, local attacker may impact the system due to a locking issue in the compat path, leading to a kernel information leak problem.

Solution(s)

• oracle-linux-upgrade-kernel
• oracle-linux-upgrade-kernel-uek

References

• https://attackerkb.com/topics/cve-2023-0266
• CVE - 2023-0266
• ELSA-2023-1566
• ELSA-2023-12196
• ELSA-2023-1470