SB2022042621 - Privilege escalation in Linux kernel NFC support
Published: April 26, 2022
Security Bulletin ID
SB2022042621
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2022-26490)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error within the st21nfca_connectivity_event_received() function in drivers/nfc/st21nfca/se.c in Linux kernel. A local user can run a specially crafted program to trigger buffer overflow and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.
References
- https://github.com/torvalds/linux/commit/4fbcc1a4cb20fe26ad0225679c536c80f1648221
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BG4J46EMFPDD5QHYXDUI3PJCZQ7HQAZR/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C5AUUDGSDLGYU7SZSK4PFAN22NISQZBT/