SB2026102258 - Memory leak in Linux kernel amazon ena driver

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Main Vulnerability Database SB2026102258

SB2026102258 - Memory leak in Linux kernel amazon ena driver

Published: October 22, 2026

Security Bulletin ID SB2026102258
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Memory leak (CVE-ID: CVE-2026-98486)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a local privileged user to potentially exhaust kernel memory and cause a denial of service.

The vulnerability exists due to a memory leak in the Linux kernel ENA driver's ena_probe() error path when device probing fails after ena_device_init() succeeds. A local privileged user can potentially trigger repeated probe failures to leave coherent DMA buffers allocated, exhausting kernel memory and potentially causing a denial of service.


Remediation

Install update from vendor's website.

References