SB2019061405 - NULL pointer dereference in Linux kernel
Published: June 14, 2019 Updated: July 11, 2019
Security Bulletin ID
SB2019061405
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2019-12818)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 2.3 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
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.