Linux Kernel up to 6.19.11 netfilter privilege escalation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.19.11. It has been rated as critical. Affected by this issue is some unknown functionality of the component netfilter. The manipulation leads to an unknown weakness. This vulnerability is uniquely identified as CVE-2026-43024. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.19.11. It has been rated as critical. This issue affects an unknown function of the component netfilter. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: reject immediate NF_QUEUE verdict nft_queue is always used from userspace nftables to deliver the NF_QUEUE verdict. Immediately emitting an NF_QUEUE verdict is never used by the userspace nft tools, so reject immediate NF_QUEUE verdicts. The arp family does not provide queue support, but such an immediate verdict is still reachable. Globally reject NF_QUEUE immediate verdicts to address this issue.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-43024 since 05/01/2026. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/17/2026).

The vulnerability scanner Nessus provides a plugin with the ID 321690 (SUSE SLES12 Security Update : kernel (SUSE-SU-2026:2450-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.253, 5.15.203, 6.1.168, 6.6.134, 6.12.81, 6.18.22 or 6.19.12 eliminates this vulnerability. Applying the patch 2f7f825a548be55420f0f5f716f6c27b9d312d3f/f140593901724cfbd16597c3a4fcb24a58ae44b0/68390437a998c3f2c57212b413abef5e6d657d88/4b12a3cc3f075e750cc3c5e693fd25fb400af4a2/f710691be163ae6b39e4bcab9e5be32d329f035b/42a47f4b1b7695026ab9bc1bb35d4622b0835c95/17dc5d5a935c771338430cbc156a16a51cfd31e8/da107398cbd4bbdb6bffecb2ce86d5c9384f4cec is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (321690). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 321690
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2026:2450-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 5.10.253/5.15.203/6.1.168/6.6.134/6.12.81/6.18.22/6.19.12
Patch: 2f7f825a548be55420f0f5f716f6c27b9d312d3f/f140593901724cfbd16597c3a4fcb24a58ae44b0/68390437a998c3f2c57212b413abef5e6d657d88/4b12a3cc3f075e750cc3c5e693fd25fb400af4a2/f710691be163ae6b39e4bcab9e5be32d329f035b/42a47f4b1b7695026ab9bc1bb35d4622b0835c95/17dc5d5a935c771338430cbc156a16a51cfd31e8/da107398cbd4bbdb6bffecb2ce86d5c9384f4cec

Timelineinfo

05/01/2026 Advisory disclosed
05/01/2026 +0 days CVE reserved
05/01/2026 +0 days VulDB entry created
07/17/2026 +77 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-43024 (🔒)
GCVE (CVE): GCVE-0-2026-43024
GCVE (VulDB): GCVE-100-360647

Entryinfo

Created: 05/01/2026 17:44
Updated: 07/17/2026 11:18
Changes: 05/01/2026 17:44 (57), 06/21/2026 08:19 (2), 07/17/2026 11:18 (10)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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