Use-After-Free Vulnerability in Netfilter by Canonical
CVE-2022-2586
Key Information:
- Vendor
- The Linux Kernel Organization
- Status
- Linux
- Vendor
- CVE Published:
- 8 January 2024
Badges
Summary
A vulnerability exists within the Netfilter framework, where an nft object or expression can reference a nft set from a different nft table. This occurrence leads to a use-after-free condition when the referenced table gets deleted. Such scenarios could potentially allow an attacker to leverage the condition to execute malicious code or gain unauthorized access, impacting systems that rely on the Netfilter subsystem within the Linux kernel.
CISA Reported
CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace
The CISA's recommendation is: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable.
Affected Version(s)
linux Linux 0 < 6.0~rc1
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
EPSS Score
1% chance of being exploited in the next 30 days.
CVSS V3.1
Timeline
- 🦅
CISA Reported
Vulnerability published
- 🟡
Public PoC available
- 👾
Exploit known to exist