Use After Free in Linux Kernel
CVE-2024-1086
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT. We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.
Vulnerability class: Use-After-Free
EPSS: 0.281 (98.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Known ransomware campaign use: yes.
Public proof-of-concept exploits
References
- cve-coordination@google.com (Patch, patch)
- cve-coordination@google.com (Patch)
- cve-coordination@google.com (Mailing List)
- cve-coordination@google.com (Exploit, Third Party Advisory)
- cve-coordination@google.com (Issue Tracking)
- cve-coordination@google.com (Technical Description, Exploit, Third Party Advisory)
- cve-coordination@google.com (Mailing List)
- cve-coordination@google.com (Patch, Mailing List)
- cve-coordination@google.com (Patch, Mailing List)
- cve-coordination@google.com (Exploit, Mailing List)
Frequently asked questions
- What is CVE-2024-1086?
- CVE-2024-1086 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2024-01-31.
- How severe is CVE-2024-1086?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2024-1086 known to be exploited?
- Yes. CVE-2024-1086 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-05-30), indicating it is being actively exploited. 100 public proof-of-concept repositories are indexed.