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EUVDEUVD-2026-49133

| CVE-2026-17523 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
2
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
No
Human Impact· derived
Medium
Technical Impact
Total

Priority Score

39
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:*:*:*:*:*:*:*:*
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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