SB2023110342 - openEuler 20.03 LTS SP3 update for kernel

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Main Vulnerability Database SB2023110342

SB2023110342 - openEuler 20.03 LTS SP3 update for kernel

Published: November 3, 2023

Security Bulletin ID SB2023110342
Severity
Medium
Patch available
YES
Number of vulnerabilities 8
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 13% Low 88%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 8 secuirty vulnerabilities.


1) Race condition (CVE-ID: CVE-2022-44033)

The vulnerability allows an attacker to escalate privileges on the system.

The vulnerability exists due to a race condition in drivers/char/pcmcia/cm4040_cs.c in Linux kernel. An attacker with physical access to device can remove the PCMCIA device while calling open() to trigger a use-after-free error and execute arbitrary code on the system.

2) 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.

3) NULL pointer dereference (CVE-ID: CVE-2023-31083)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the hci_uart_tty_ioctl() function in drivers/bluetooth/hci_ldisc.c. A local user can pass specially crafted data to the system and perform a denial of service (DoS) attack.


4) Division by zero (CVE-ID: CVE-2023-31085)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a divide by zero error within the drivers/mtd/ubi/cdev.c driver. A local user can perform a denial of service (DoS) attack.


5) Deadlock (CVE-ID: CVE-2023-34324)

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to improper event handling in Linux kernel. A malicious guest can disable paravirtualized device to cause a deadlock in a backend domain (other than dom0).


6) Out-of-bounds read (CVE-ID: CVE-2023-39194)

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the XFRM subsystem in Linux kernel. A local user with CAP_NET_ADMIN capability can trigger an out-of-bounds read error and read contents of memory on the system.


7) Out-of-bounds write (CVE-ID: CVE-2023-45863)

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

The vulnerability exists due to a boundary error within the fill_kobj_path() function in lib/kobject.c. A local user can can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.


8) Out-of-bounds write (CVE-ID: CVE-2023-5717)

The vulnerability local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in the Linux kernel's Linux Kernel Performance Events (perf) component. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.


Remediation

Install update from vendor's website.

References