SB2023112841 - Red Hat Enterprise Linux 8 update for kernel-rt

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Main Vulnerability Database SB2023112841

SB2023112841 - Red Hat Enterprise Linux 8 update for kernel-rt

Published: November 28, 2023 Updated: February 27, 2024

Security Bulletin ID SB2023112841
Severity
Low
Patch available
YES
Number of vulnerabilities 7
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 7 secuirty vulnerabilities.


1) Out-of-bounds write (CVE-ID: CVE-2023-2163)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in BPF verifier caused by improper marking of registers for precision tracking in certain situations. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.


2) Out-of-bounds write (CVE-ID: CVE-2023-3812)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the TUN/TAP device driver in Linux kernel. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.


3) Use-after-free (CVE-ID: CVE-2023-5178)

The vulnerability allows a local authenticated user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the drivers/nvme/target/tcp.c in nvmet_tcp_free_crypto due to a logical bug in the NVMe-oF/TCP subsystem in the Linux kernel. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.


4) Use-after-free (CVE-ID: CVE-2022-45884)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error in drivers/media/dvb-core/dvbdev.c in Linux kernel related to dvb_register_device() function dynamically allocating fops. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.


5) Use-after-free (CVE-ID: CVE-2022-45886)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error in drivers/media/dvb-core/dvb_net.c in Linux kernel. A local user can trigger a race condition and execute arbitrary code with elevated privileges.

6) Use-after-free (CVE-ID: CVE-2022-45919)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error in drivers/media/dvb-core/dvb_ca_en50221.c in Linux kernel. A local user can trigger a race condition and execute arbitrary code with elevated privileges.

7) Use-after-free (CVE-ID: CVE-2023-1192)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the smb2_is_status_io_timeout() function in Linux kernel. A local user can set environment variable to a specific value, trigger a use-after-free error and execute arbitrary code with elevated privileges.


Remediation

Install update from vendor's website.

References