Memory Leak in Linux Kernel AMDXDNA Driver

Publication date: 2026-05-27

Last updated on: 2026-06-24

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix memory leak in amdxdna_ubuf_map The amdxdna_ubuf_map() function allocates memory for sg and internal sg table structures, but it fails to free them if subsequent operations (sg_alloc_table_from_pages or dma_map_sgtable) fail.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-05-27

Last Modified

2026-06-24

Generated

2026-07-07

AI Q&A

2026-05-27

EPSS Evaluated

2026-07-05

NVD

CVE-2026-45908

EUVD

EUVD-2026-32374

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 6.19 (inc) to 6.19.4 (exc)
linux	linux_kernel	From 6.18 (inc) to 6.18.14 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-401	The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

Attack-Flow Graph

Executive Summary

This vulnerability exists in the Linux kernel's amdxdna driver, specifically in the amdxdna_ubuf_map() function. The function allocates memory for scatter-gather (sg) and internal sg table structures but does not properly free this memory if certain subsequent operations fail. This leads to a memory leak.

Impact Analysis

The memory leak caused by this vulnerability can lead to increased memory usage over time, potentially degrading system performance or causing resource exhaustion. This may result in system instability or crashes if the leak is significant and not mitigated.

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