CVE-2024-1086

HIGH CISA KEV
Published Jan 31, 2024 Modified Oct 27, 2025 CWE-416

Description

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.

CVSS v3.1 Score

7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA Known Exploited Vulnerability

This vulnerability is actively exploited in the wild.

Added: May 30, 2024 Remediation due: Jun 20, 2024 Known ransomware use

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
fedoraproject fedora
redhat enterprise_linux_desktop
redhat enterprise_linux_for_ibm_z_systems
redhat enterprise_linux_for_power_big_endian
redhat enterprise_linux_for_power_little_endian
redhat enterprise_linux_server
redhat enterprise_linux_workstation
debian debian_linux
netapp a250_firmware
netapp a250
netapp 500f_firmware
netapp 500f
netapp c250_firmware
netapp c250

References

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.8 (HIGH). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.
How severe is CVE-2024-1086? +
CVE-2024-1086 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-1086? +
CVE-2024-1086 affects products from debian, fedoraproject, linux, netapp, redhat, specifically: 500f, 500f_firmware, a250, a250_firmware, c250, c250_firmware, debian_linux, enterprise_linux_desktop, enterprise_linux_for_ibm_z_systems, enterprise_linux_for_power_big_endian, enterprise_linux_for_power_little_endian, enterprise_linux_server, enterprise_linux_workstation, fedora, linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-1086? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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