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Known exploited vulnerability

CVE-2024-1086

highCVSS 3.1 7.8In CISA KEVRansomwareEPSS 28%Published · Linux

The short answer

CVE-2024-1086 affects Linux Kernel and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2024-05-30: attackers are using it, so patch it first. The vendor has linked a patch.

What it is

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.

Weakness: CWE-416.

Severity

7.8 high

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

Exploited (CISA KEV)

Yes, since May 30, 2024

Federal due date Jun 20, 2024

EPSS, next 30 days

28%

Higher than 98% of scored CVEs

How it can be exploited

Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

What CISA says to do

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Affected products

Kernel, linux_kernel. NVD's record lists the exact affected versions.

References

Questions

Is CVE-2024-1086 being exploited?

Yes. CISA added CVE-2024-1086 to its Known Exploited Vulnerabilities catalog on 2024-05-30, with a federal remediation due date of 2024-06-20. CISA lists it as used in ransomware campaigns.

How do I fix CVE-2024-1086?

CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.

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