Use-After-Free Vulnerability in Linux Kernel's Netfilter Subsystem
CVE-2023-3390
Key Information:
Badges
Summary
A use-after-free vulnerability exists in the netfilter subsystem of the Linux kernel, specifically within the nf_tables_api.c file. This flaw arises due to improper error handling with NFT_MSG_NEWRULE, which allows an attacker with local user access to exploit a dangling pointer during transactions. Such exploitation can lead to unauthorized privilege escalation, potentially compromising the system's integrity. It is crucial for users to upgrade to versions beyond commit 1240eb93f0616b21c675416516ff3d74798fdc97 to mitigate the risks associated with this vulnerability.
Affected Version(s)
Linux Kernel 3.16 < 6.4
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
CVSS V3.1
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved