CVE-2026-53156

Analyzed Analyzed - Analysis Complete

Use-After-Free in Linux Kernel NVMEM Core

Publication date: 2026-06-25

Last updated on: 2026-07-06

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: nvmem: core: fix use-after-free bugs in error paths Fix several instances of error paths in which we call __nvmem_device_put() - which may end up freeing the underlying memory and other resources - and then keep on using the nvmem structure. Always put the reference to the nvmem device as the last step before returning the error code.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-25

Last Modified

2026-07-06

Generated

2026-07-15

AI Q&A

2026-06-25

EPSS Evaluated

2026-07-14

NVD

CVE-2026-53156

EUVD

EUVD-2026-39247

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	From 6.13 (inc) to 6.18.36 (exc)
linux	linux_kernel	From 6.19 (inc) to 7.0.13 (exc)
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	From 4.20 (inc) to 6.12.94 (exc)

Helpful Resources

Exploitability

CWE

KEV

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This vulnerability is a use-after-free bug in the Linux kernel's nvmem core component. It occurs in error paths where the function __nvmem_device_put() is called, which may free the underlying memory and other resources. However, the code continues to use the nvmem structure after it has been freed, leading to potential memory corruption or crashes.

Impact Analysis

The use-after-free vulnerability can lead to undefined behavior such as memory corruption, system crashes, or potential exploitation by attackers to execute arbitrary code or cause denial of service on affected Linux systems.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version that includes the fix for the use-after-free bugs in the nvmem core error paths.

Ensure that the kernel version you are running has the patch that properly handles __nvmem_device_put() calls to avoid use-after-free conditions.

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