SB2023052414 - Amazon Linux AMI update for kernel

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Main Vulnerability Database SB2023052414

SB2023052414 - Amazon Linux AMI update for kernel

Published: May 24, 2023 Updated: June 16, 2024

Security Bulletin ID SB2023052414
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2023-2513)

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

The vulnerability exists due to a use-after-free error within the ext4 filesystem in the way it handled the extra inode size for extended attributes. A local user can trigger a use-after-free error and escalate privileges on the system.



2) Out-of-bounds write (CVE-ID: CVE-2023-31436)

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

The vulnerability exists due to a boundary error within the qfq_change_class() function in net/sched/sch_qfq.c when handling the MTU value provided to the QFQ Scheduler. 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