CVE-2026-17523

EUVD-2026-49133 HIGH

Expired Pointer Dereference (CWE-825)

2026-07-27 secalert@redhat.com

GHSA-pvqq-pw2j-4v86

Privilege Escalation RCE

7.8

CVSS 3.1 · Vendor: redhat

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Vulnerability Assessment

Weakness

CWE

CWE-825

ASVS 5.0

V15 - Secure Coding and Architecture Expired pointer prevention

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 28, 2026

Local privilege escalation in the Linux kernel's CAN Broadcast Manager (BCM) module allows an unprivileged local user to execute arbitrary code in kernel context. The flaw stems from an expired pointer dereference (CWE-825) in the handling of tasklets and timers, leading to use-after-free. No active exploitation or public exploit code has been identified, but successful exploitation results in full root compromise of the system.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (redhat) PRIMARY 7.8 HIGH

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

SUSE HIGH

Red Hat 7.8 HIGH

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

A flaw was found in the kernel. An unprivileged local user can exploit this vulnerability to execute arbitrary code within the kernel, which leads to a local privilege escalation (LPE). This allows the attacker to gain root privileges and take full control of the affected system.

Threat Intelligence Overview

EPSS Score

0.1%

Top 98% exploitable

Social Media

Sightings

Data Quality

8 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS

Vulnrichment Vendor CIRCL

GitHub

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.1%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation

None

System Exposure· derived

Small

Automatable

Human Impact· derived

Medium

Technical Impact

Total

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Privilege Escalation HIGH

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:2.6.29:-:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:2.6.29:rc2:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:2.6.29:rc3:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:2.6.29:rc4:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:2.6.29:rc5:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:2.6.29:rc6:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:2.6.29:rc7:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:2.6.29:rc8:*:*:*:*:*:*

Same weakness CWE-825 – Expired Pointer Dereference

View all

CVE-2025-49794 CRITICAL POC

9.1

CVE-2024-23310 CRITICAL POC

9.8

CVE-2025-49795 HIGH POC

7.5

CVE-2026-58592 HIGH POC

8.9

CVE-2019-15691 HIGH POC

7.2

CVE-2024-23638 MEDIUM POC

6.5

CVE-2026-53006 CRITICAL

9.8

CVE-2026-52924 CRITICAL

9.8

Same technique Privilege Escalation

View all

CVE-2024-0012 CRITICAL POC

9.3

CVE-2025-47812 CRITICAL POC

10.0

CVE-2013-0422 CRITICAL POC

9.8

CVE-2013-0632 CRITICAL POC

9.8

CVE-2024-9474 MEDIUM POC

6.9

CVE-2017-5689 CRITICAL POC

9.8

CVE-2021-20021 CRITICAL POC

9.8

CVE-2017-12635 CRITICAL POC

9.8

Vendor StatusVendor

SUSE

Severity: Important

Product	Status
SUSE Linux Enterprise Desktop 15 SP7	Affected
SUSE Linux Enterprise Desktop 15 SP7	Affected
SUSE Linux Enterprise High Availability Extension 15 SP7	Affected
SUSE Linux Enterprise High Availability Extension 15 SP7	Affected
SUSE Linux Enterprise High Availability Extension 16.0	Affected

References

Advisories & patches

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-17523 ADVISORY https://vuldb.com/vuln/383402 REF https://access.redhat.com/errata/RHSA-2026:55764 REF https://access.redhat.com/errata/RHSA-2026:55765 REF https://access.redhat.com/errata/RHSA-2026:61932 REF https://access.redhat.com/security/cve/CVE-2026-17523 REF https://bugzilla.redhat.com/show_bug.cgi?id=2507407 REF https://git.kernel.org/stable/c/79305a826f872fe446c6fbf8450f515053ef6951 REF https://git.kernel.org/stable/c/bf74aa86e111aa3b2fbb25db37e3a3fab71b5b68 REF https://github.com/torvalds/linux/commit/bf74aa86e111aa3b2fbb25db37e3a3fab71b5b68

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GitHub PoC

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