CVE-2026-6424
Deferred Deferred - Pending Action

Use-after-free in ESET Linux Products Triggers Kernel Panic

Publication date: 2026-07-16

Last updated on: 2026-07-16

Assigner: ESET

Description
Use-after-free vulnerability in ESET Linux products potentially allowed an attacker to trigger kernel panic on the system

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Meta Information

Published
2026-07-16
Last Modified
2026-07-16
Generated
2026-08-05
AI Q&A
2026-07-16
EPSS Evaluated
2026-08-04
NVD
CVE-2026-6424
EUVD
EUVD-2026-44903

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
eset endpoint_antivirus *-*
eset server_security *-*

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

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Executive Summary

This is a use-after-free vulnerability in ESET Linux security products. It occurs when a program tries to use memory that has already been freed, potentially causing a kernel panic and system crash. The flaw requires specific timing and conditions to exploit.

Detection Guidance

Detection primarily involves checking installed versions of ESET Linux products against patched versions. Use commands like 'dpkg -l | grep eset' or 'rpm -qa | grep eset' to list installed ESET packages. Compare versions with those listed in ESET's advisory.

Impact Analysis

An attacker could trigger a kernel panic, leading to a denial-of-service condition on your system. This would cause the affected Linux system to crash, disrupting services and potentially leading to data loss or downtime.

Compliance Impact

A denial-of-service condition could disrupt critical services, potentially violating availability requirements in GDPR or HIPAA. This may lead to compliance issues if systems are not restored promptly or if data processing is interrupted.

Mitigation Strategies

Immediately upgrade to the latest fixed versions of ESET Endpoint Antivirus for Linux or ESET Server Security for Linux. Download updates from ESET's official website or repository. Schedule upgrades promptly as older versions may no longer receive hotfixes.

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