Resource management error in FreeBSD - CVE-2024-39281
Published: October 31, 2024
Vulnerability identifier: #VU99546
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-39281
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
FreeBSD
How to mitigate CVE-2024-39281
Install updates from vendor's website.