SB2019061405 - NULL pointer dereference in Linux kernel
Published: June 14, 2019 Updated: July 11, 2019
Security Bulletin ID
SB2019061405
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2019-12818)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dreference error in the Linux kernel before 4.20.15 when processing NFC data. The error is triggered by the nfc_llcp_build_tlv function in net/nfc/llcp_commands.c that may return NULL. Such behavior can lead to a NULL pointer dereference in the nfc_llcp_build_gb() function in net/nfc/llcp_core.c. A remote attacker can perform a denial of service (DoS) attack.Remediation
Install update from vendor's website.