CVE-2024-1086: Linux Kernel Use-After-Free Vulnerability

Patch now

HIGH 7.8EXPLOITEDWATCHLISTMITIGATEMITIGATEMITIGATE

CVE-2024-1086 is a high-severity flaw (CVSS 7.8) affecting h300s firmware, h500s firmware, h700s firmware, reported as exploited in the wild. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 f342de4e2f33e0e39165d8639387aa6

Why this priority

High severity
EPSS top 2%: very likely to be exploited
Exploited in the wild (CISA KEV)
Used in ransomware campaigns
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	28.1% (top 2%)
CISA exploited list	Yes, fix due 2024-06-20, used in ransomware
Weakness	CWE-416
Published	2024-01-31
Last modified	2026-08-07

Publisher (CNA): Google Inc. · Vendor: netapp

Last updated 2026-08-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-01-31 13:15 UTCPublished CVE record published
2024-05-30Exploited Added to the CISA Known Exploited Vulnerabilities list
2024-06-20Deadline CISA due date for US federal agencies to patch
2026-08-07 19:59 UTCUpdated Record last modified

netapp h300s firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netapp h500s firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netapp h700s firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netapp h410s firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netapp h410c firmware MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

netapp bootstrap os MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · sbcl · FIXED · 2.6.10-1.fc46 · FEDORA-2026-feab1a81c6 · source

sudo dnf upgrade --advisory=FEDORA-2026-feab1a81c6

Fedora ELN · python-archspec · FIXED · 0.2.7-1.eln159 · FEDORA-2026-e2a8272db6 · source

sudo dnf upgrade --advisory=FEDORA-2026-e2a8272db6

Ubuntu 20.04 · linux · FIXED · 5.4.0-174.193

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "5.4.0-174.193" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 22.04 · linux · FIXED · 5.15.0-101.111

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "5.15.0-101.111" && echo PATCHED || echo STILL-VULNERABLE

Ubuntu 24.04 · linux · NOT AFFECTED

Ubuntu 24.10 · linux · NOT AFFECTED

Ubuntu 25.04 · linux · NOT AFFECTED

Debian 12 · linux · FIXED · 6.1.76-1

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "6.1.76-1" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · linux · FIXED · 6.6.15-1

sudo apt update && sudo apt install --only-upgrade linux dpkg --compare-versions "$(dpkg-query -W -f='${Version}' linux)" ge "6.6.15-1" && echo PATCHED || echo STILL-VULNERABLE

RHEL 7 · kernel-rt · FIXED · kernel-rt-3.10.0-1160.114.2.rt56.1266.el7

sudo dnf upgrade --advisory=RHSA-2024:1332 rpm -q kernel-rt

RHEL 7 · kernel · FIXED · kernel-3.10.0-1160.114.2.el7

sudo dnf upgrade --advisory=RHSA-2024:1249 rpm -q kernel

RHEL 7.6 Advanced Update Support · kernel · FIXED · kernel-3.10.0-957.113.1.el7

sudo dnf upgrade --advisory=RHSA-2024:3318 rpm -q kernel

RHEL 7.7 Advanced Update Support · kernel · FIXED · kernel-3.10.0-1062.88.1.el7

sudo dnf upgrade --advisory=RHSA-2024:3319 rpm -q kernel

RHEL 8 · kernel-rt · FIXED · kernel-rt-4.18.0-513.24.1.rt7.326.el8_9

sudo dnf upgrade --advisory=RHSA-2024:1614 rpm -q kernel-rt

Amazon Linux 2023 · see advisory · FIXED · ALAS2023-2024-517 · source

sudo dnf update --advisory=ALAS2023-2024-517

Amazon Linux 2 · see advisory · FIXED · ALAS2-2024-2453 · source

sudo yum update --advisory=ALAS2-2024-2453

Amazon Linux 1 · see advisory · FIXED · ALAS-2024-1919 · source

sudo yum update --advisory=ALAS-2024-1919

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: Notselwyn/CVE-2024-1086 (2457 stars)
GitHub PoC: LLfam/CVE-2024-1086 (23 stars)
GitHub PoC: Alicey0719/docker-POC_CVE-2024-1086 (3 stars)
Write-up: news.ycombinator.com/item?id=39828424
Write-up: pwning.tech/nftables/
GitHub PoC: CCIEVoice2009/CVE-2024-1086

Verify at the official source NVD · CVE Program · CISA KEV catalog · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-1086?

h300s firmware: mitigate or apply the listed mitigation; h500s firmware: mitigate or apply the listed mitigation; h700s firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-1086 being exploited?

Yes. CVE-2024-1086 is on the CISA Known Exploited Vulnerabilities list, so treat it as patch-now.

What does CVE-2024-1086 affect?

CVE-2024-1086 affects h300s firmware, h500s firmware, h700s firmware. Severity is high (CVSS 7.8). 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

How urgent is CVE-2024-1086?

Priority 92/100. High severity; EPSS top 2%: very likely to be exploited; Exploited in the wild (CISA KEV); Used in ransomware campaigns; Public exploit reference; On your watchlist

Software pages

Linux kernel vulnerabilities · Bootstrap vulnerabilities

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References

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