CriticalCVE-2026-53006

Linux Kernel: Expired Pointer Dereference (CVE-2026-53006)

Published 24.06.2026Last modified 19.10.2026Sources: SUSE, Siemens ProductCERT, Ubuntu, Debian LTS, BSI, Red Hat, CVE.org, Msrc Update Guide

What is affected, what to do

Update Linux Kernel to version 5.10.258, Linux Kernel to version 5.15.209, Linux Kernel to version 6.1.175.

Affected: Linux Kernel lt 4.4..5.10.258
Linux Kernel lt 5.11..5.15.209
Linux Kernel lt 5.16..6.1.175
Linux Kernel lt 6.2..6.6.141
Linux Kernel lt 6.7..6.12.91
Linux Kernel lt 6.13..6.18.33
Linux Kernel lt 6.19..7.0.10
Fixed in: Linux Kernel 5.10.258
Linux Kernel 5.15.209
Linux Kernel 6.1.175
Linux Kernel 6.6.141
Linux Kernel 6.12.91
Linux Kernel 6.18.33
Linux Kernel 7.0.10
Linux Kernel 7.1

Not sure whether and how you are affected? Ask a question about this vulnerability

Metrics

9.8

Priority

XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

Source: NVD, CVSS v3

9.8

CVSS v3

Severity Critical on the scale from 0 to 10.

Source: SUSE, Siemens ProductCERT, Ubuntu, Debian LTS, BSI, Red Hat, CVE.org, Msrc Update Guide

0.4 %

EPSS score

Low — model estimates < 1% exploitation likelihood.

Source: FIRST EPSS, percentile 33.8

Show all metrics

Severity: Critical
Priority (0–325) The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first? Read in glossary: 77.13 Methodology
Exploit maturity An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack. Read in glossary: no public PoC known
XIEM Effective CVSS XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command. Read in glossary: 9.8 Methodology
CVSS v3 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 9.8
EPSS score The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“. Read in glossary: 0.4 %; Low — model estimates < 1% exploitation likelihood.
EPSS percentile The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking. Read in glossary: 33.8; Elevated — this CVE ranks above at least 10% of all CVEs scored today.
KEV status The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching. Read in glossary: —
Published: 24.06.2026
CISA assessment (SSVC): Exploitation: none known · automatable · Technical impact: total; Source: CISA Vulnrichment, as of 16 October 2026
CWE CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect. Read in glossary: CWE-825

Detection rules

No NEOSEC detection rule is available for this vulnerability yet.

Classification under NIS2 and CRA

Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

NIS2 NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management. Read in glossary: High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
CRA The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates. Read in glossary: From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001 ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security. Read in glossary: Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

Description

A flaw was found in the Linux kernel's IPv6 (Internet Protocol version 6) implementation. This vulnerability, a Use-After-Free (UAF) error, occurs due to incorrect caching of network packet addresses before a memory operation. An attacker could potentially exploit this flaw to cause memory corruption, which may lead to a denial of service or, in some scenarios, arbitrary code execution.

Source: suse_csaf, siemens_advisory, Ubuntu Security Notices, Debian LTS Advisories, BSI WID Portal, BSI CSAF, redhat_csaf, cvelistv5, NVD (NIST), Microsoft Security Update Guide, CVE.org (MITRE)

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

Affected products
		Affected versions	Fixed in
Linux	Linux	`5.16 – < 6.1.175` `4.4 – < 5.10.258` `5.11 – < 5.15.209` `6.7 – < 6.12.91` `—` `6.13 – < 6.18.33` `6.2 – < 6.6.141` `6.19 – < 7.0.10`	`6.1.175` `5.10.258` `5.15.209` `6.12.91` `7.1` `6.18.33` `6.6.141` `7.0.10`
IBM	DataPower Gateway	`< 11.0.0.3` `< 10.6.0.11` `< 10.5.0.23`	`11.0.0.3` `10.6.0.11` `10.5.0.23`
IBM	QRadar SIEM	`<7.5.0 UP15 IF06`	—

Vendors and products

Affected operating systems

Affected operating systems

Linux	ubuntu	aws	`bionic`
Linux	ubuntu	aws	`jammy`
Linux	ubuntu	aws	`noble`
Linux	ubuntu	aws	`resolute`
Linux	ubuntu	aws	`xenial`
Linux	ubuntu	aws-6.8	`jammy`
Linux	ubuntu	aws-hwe	`xenial`
Linux	ubuntu	azure	`jammy`
Linux	ubuntu	azure	`noble`
Linux	ubuntu	azure	`resolute`
Linux	ubuntu	azure	`xenial`
Linux	ubuntu	azure-4.15	`bionic`
Linux	redhat	enterprise_linux	`10.0`
Linux	redhat	enterprise_linux	`8.0`
Linux	redhat	enterprise_linux	`9.0`
Linux	ubuntu	gcp	`jammy`
Linux	ubuntu	gcp	`noble`
Linux	ubuntu	gcp	`resolute`
Linux	ubuntu	gcp	`xenial`
Linux	ubuntu	gcp-4.15	`bionic`
Linux	ubuntu	gcp-6.8	`jammy`
Linux	ubuntu	generic-4.15	`bionic`
Linux	ubuntu	generic-4.15	`xenial`
Linux	ubuntu	generic-4.4	`xenial`

Weakness classes (CWE)

CWE-825Expired Pointer Dereference
Base
The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.
Entry at MITRE CWE-825

References & sources

git.kernel.orgstable/c/7bff2c8fe5c35ae58bf73104f53db3676e6e5d94Patch
git.kernel.orgstable/c/aff0f28f5be803de2452ce702631c021fcd9ce8aPatch
git.kernel.orgstable/c/38bdbc897c0d83a3e2b925a51b69420f1feba29aPatch
git.kernel.orgstable/c/0069813e6ca9309eca78022bcb3aeb1e9ef90a12Patch
git.kernel.orgstable/c/1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7Patch
git.kernel.orgstable/c/7c66b368c6ff453f99cb39d84af93e908e51eef2Patch
git.kernel.orgstable/c/085e31a811ef234ef8c3e219c4636dfebfe7e10fPatch
git.kernel.orgstable/c/f996edd7615e686ada141b7f3395025729ff8ccbPatch
access.redhat.comsecurity/cve/CVE-2026-53006Vulnerability database, x_refsource_REDHAT, Third-party advisory
bugzilla.redhat.comRHBZ#2492363Issue tracking, x_refsource_REDHAT, Third-party advisory
security.access.redhat.comdata/csaf/v2/vex/2026/cve-2026-53006.jsonx_sadp-csaf-vex, Third-party advisory
access.redhat.comerrata/RHSA-2026:47017Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:45192Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:47011Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:61932Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:47010Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:62568Vendor advisory, x_refsource_REDHAT
Siemens ProductCERTproductcert/html/ssa-019113.html
access.redhat.comerrata/RHSA-2026:64767Vendor advisory, x_refsource_REDHAT
access.redhat.comerrata/RHSA-2026:65712Vendor advisory, x_refsource_REDHAT

Changes to this CVE

Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

19.10.2026Record modifiedCISA ADP
Weakness type: CWE-825
Show the original change
Individual changes of this event as published by NVD
Type Action Before After
Weakness type (CWE) added
—
CWE-825
Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Individual changes of this event as published by NVD
Type	Action	Before	After
Weakness type (CWE)	added	—	CWE-825

16.10.2026Record modifiedCISA ADP

CISA assessment (SSVC): exploitation: none known, automatable: yes

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
SSVC assessment	added	—	{"id":"CVE-2026-53006","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"version":"2.0.3","timestamp":"2026-10-16T15:24:36.806967Z"}

Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

15.10.2026Record modifiedSiemens ADP

New references:

https://cert-portal.siemens.com/productcert/html/ssa-457936.html

Show 2 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/53xxx/CVE-2026-53006.json">CVE-2026-53006</a>
Reference	added	—	https://cert-portal.siemens.com/productcert/html/ssa-457936.html

Source identifier: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

16.09.2026Record modifiedRed Hat ADP

New references:

Show 2 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:67721
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:67723

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

09.09.2026Record modifiedRed Hat ADP

New references:

Show 5 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/53xxx/CVE-2026-53006.json">CVE-2026-53006</a>
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:64767
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:65710
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:65711
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:65712

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Show 8 older changes

08.09.2026Record modifiedSiemens ADP

New references:

https://cert-portal.siemens.com/productcert/html/ssa-019113.html

Show 2 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/53xxx/CVE-2026-53006.json">CVE-2026-53006</a>
Reference	added	—	https://cert-portal.siemens.com/productcert/html/ssa-019113.html

Source identifier: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e

03.09.2026Record modifiedRed Hat ADP

New references:

https://access.redhat.com/errata/RHSA-2026:62568

Show 2 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/53xxx/CVE-2026-53006.json">CVE-2026-53006</a>
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:62568

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

01.09.2026Record modifiedLinux

New references:

and 4 more references

Show 24 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Reference	added	—	https://git.kernel.org/stable/c/0069813e6ca9309eca78022bcb3aeb1e9ef90a12
Reference	added	—	https://git.kernel.org/stable/c/085e31a811ef234ef8c3e219c4636dfebfe7e10f
Reference	added	—	https://git.kernel.org/stable/c/1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7
Reference	added	—	https://git.kernel.org/stable/c/38bdbc897c0d83a3e2b925a51b69420f1feba29a
Reference	added	—	https://git.kernel.org/stable/c/7bff2c8fe5c35ae58bf73104f53db3676e6e5d94
Reference	added	—	https://git.kernel.org/stable/c/7c66b368c6ff453f99cb39d84af93e908e51eef2
Reference	added	—	https://git.kernel.org/stable/c/aff0f28f5be803de2452ce702631c021fcd9ce8a
Reference	added	—	https://git.kernel.org/stable/c/f996edd7615e686ada141b7f3395025729ff8ccb
Reference	removed	https://git.kernel.org/stable/c/0069813e6ca9309eca78022bcb3aeb1e9ef90a12	—
Reference	removed	https://git.kernel.org/stable/c/085e31a811ef234ef8c3e219c4636dfebfe7e10f	—
Reference	removed	https://git.kernel.org/stable/c/1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7	—
Reference	removed	https://git.kernel.org/stable/c/38bdbc897c0d83a3e2b925a51b69420f1feba29a	—
Reference	removed	https://git.kernel.org/stable/c/7bff2c8fe5c35ae58bf73104f53db3676e6e5d94	—
Reference	removed	https://git.kernel.org/stable/c/7c66b368c6ff453f99cb39d84af93e908e51eef2	—
Reference	removed	https://git.kernel.org/stable/c/aff0f28f5be803de2452ce702631c021fcd9ce8a	—
Reference	removed	https://git.kernel.org/stable/c/f996edd7615e686ada141b7f3395025729ff8ccb	—
Reference type	removed	https://git.kernel.org/stable/c/0069813e6ca9309eca78022bcb3aeb1e9ef90a12 Types: Patch	—
Reference type	removed	https://git.kernel.org/stable/c/085e31a811ef234ef8c3e219c4636dfebfe7e10f Types: Patch	—
Reference type	removed	https://git.kernel.org/stable/c/1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7 Types: Patch	—
Reference type	removed	https://git.kernel.org/stable/c/38bdbc897c0d83a3e2b925a51b69420f1feba29a Types: Patch	—
Reference type	removed	https://git.kernel.org/stable/c/7bff2c8fe5c35ae58bf73104f53db3676e6e5d94 Types: Patch	—
Reference type	removed	https://git.kernel.org/stable/c/7c66b368c6ff453f99cb39d84af93e908e51eef2 Types: Patch	—
Reference type	removed	https://git.kernel.org/stable/c/aff0f28f5be803de2452ce702631c021fcd9ce8a Types: Patch	—
Reference type	removed	https://git.kernel.org/stable/c/f996edd7615e686ada141b7f3395025729ff8ccb Types: Patch	—

Source identifier: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

01.09.2026Record modifiedRed Hat ADP

New references:

and 4 more references

Show 18 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:45192
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:47010
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:47011
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:47017
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:61932
Reference	added	—	https://access.redhat.com/security/cve/CVE-2026-53006
Reference	added	—	https://bugzilla.redhat.com/show_bug.cgi?id=2492363
Reference	added	—	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53006.json
Reference	removed	https://access.redhat.com/errata/RHSA-2026:45192	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:47010	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:47011	—
Reference	removed	https://access.redhat.com/errata/RHSA-2026:47017	—
Reference	removed	https://access.redhat.com/security/cve/CVE-2026-53006	—
Reference	removed	https://bugzilla.redhat.com/show_bug.cgi?id=2492363	—
Reference	removed	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53006.json	—
Reference type	removed	https://access.redhat.com/security/cve/CVE-2026-53006 Types: Third Party Advisory	—
Reference type	removed	https://bugzilla.redhat.com/show_bug.cgi?id=2492363 Types: Third Party Advisory	—
Reference type	removed	https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53006.json Types: Third Party Advisory	—

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

28.07.2026Record modifiedRed Hat ADP

New references:

Show 4 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:47010
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:47011
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:47017
Affected versions (publisher)	changed	Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 (+5)	Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8 (+5)

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

27.07.2026Record modifiedRed Hat ADP

New references:

https://access.redhat.com/errata/RHSA-2026:45192

Show 2 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:45192
Affected versions (publisher)	changed	Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 (+5)	Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6 (+5)

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

06.07.2026Record modifiedRed Hat ADP

1 individual change: Affected versions (publisher)

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	changed	Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 (+2)	Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 (+2)

Source identifier: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

24.06.2026ReceivedLinux

Description added or changed

New references:

and 4 more references

Show 10 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Linux, Linux
Description	added	—	In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible UAF in icmpv6_rcv() Caching saddr and daddr before pskb_pull() is problematic since skb->head can change. Remove these temporary variables: - We only access &ipv6_hdr(skb)->saddr and &ipv6_hdr(skb)->daddr when net_dbg_ratelimited() is called in the slow path. - Avoid potential future misuse after pskb_pull() call.
Reference	added	—	https://git.kernel.org/stable/c/0069813e6ca9309eca78022bcb3aeb1e9ef90a12
Reference	added	—	https://git.kernel.org/stable/c/085e31a811ef234ef8c3e219c4636dfebfe7e10f
Reference	added	—	https://git.kernel.org/stable/c/1e1f0f89ee4692a64be3f3707ff8ac1ae57b03e7
Reference	added	—	https://git.kernel.org/stable/c/38bdbc897c0d83a3e2b925a51b69420f1feba29a
Reference	added	—	https://git.kernel.org/stable/c/7bff2c8fe5c35ae58bf73104f53db3676e6e5d94
Reference	added	—	https://git.kernel.org/stable/c/7c66b368c6ff453f99cb39d84af93e908e51eef2
Reference	added	—	https://git.kernel.org/stable/c/aff0f28f5be803de2452ce702631c021fcd9ce8a
Reference	added	—	https://git.kernel.org/stable/c/f996edd7615e686ada141b7f3395025729ff8ccb

Source identifier: 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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<a href="https://intel.neosec.eu/en/cve/CVE-2026-53006"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-53006.svg?lang=en" alt="CVE-2026-53006 – NEOSEC Intel" height="20"></a>