SB2019090442 - Multiple vulnerabilities in Linux kernel

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Main Vulnerability Database SB2019090442

SB2019090442 - Multiple vulnerabilities in Linux kernel

Published: September 4, 2019 Updated: July 17, 2020

Security Bulletin ID SB2019090442
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote 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) Out-of-bounds read (CVE-ID: CVE-2019-15918)

The vulnerability allows a local authenticated user to execute arbitrary code.

An issue was discovered in the Linux kernel before 5.0.10. SMB2_negotiate in fs/cifs/smb2pdu.c has an out-of-bounds read because data structures are incompletely updated after a change from smb30 to smb21.


2) Use-after-free (CVE-ID: CVE-2019-15920)

The vulnerability allows a remote authenticated user to gain access to sensitive information.

An issue was discovered in the Linux kernel before 5.0.10. SMB2_read in fs/cifs/smb2pdu.c has a use-after-free. NOTE: this was not fixed correctly in 5.0.10; see the 5.0.11 ChangeLog, which documents a memory leak.


Remediation

Install update from vendor's website.

References