SB2024103144 - Denial of service in FreeBSD ctl CAM Target Layer
Published: October 31, 2024
Security Bulletin ID
SB2024103144
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource management error (CVE-ID: CVE-2024-39281)
The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources in ctl(4) subsystem. The command ctl_persistent_reserve_out allows the caller to specify an arbitrary size which will be passed to the kernel's memory allocator. A malicious guest can pass an overly large value to the allocator and consume all available memory resources on the system, resulting in a denial of service (DoS) attack.
Remediation
Install update from vendor's website.