CVE-2026-64182
drivers/base/memory: fix memory block reference leak in poison accounting
Description
In the Linux kernel, the following vulnerability has been resolved: drivers/base/memory: fix memory block reference leak in poison accounting memblk_nr_poison_inc() and memblk_nr_poison_sub() look up a memory block via find_memory_block_by_id(), which acquires a reference to the memory block device. Both helpers use the returned memory block without dropping that reference, leaking the device reference on each successful lookup. Drop the reference after updating nr_hwpoison.
INFO
Published Date :
July 19, 2026, 4:18 p.m.
Last Modified :
July 19, 2026, 4:18 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-64182
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Apply the patch to the Linux kernel source code.
- Drop the device reference after updating nr_hwpoison.
- Recompile and deploy the updated kernel.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-64182.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-64182 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-64182
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-64182 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-64182 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 19, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5033091de814ab4b5623faed2755f3064e19e2d2', 'lessThan': '686b4283f82cd630fafd7ca9b03dfc080b3ec8fa', 'versionType': 'git'}, {'status': 'affected', 'version': '5033091de814ab4b5623faed2755f3064e19e2d2', 'lessThan': 'ce60d9452a0f2effa72fd20ea270c59ca691d455', 'versionType': 'git'}, {'status': 'affected', 'version': '5033091de814ab4b5623faed2755f3064e19e2d2', 'lessThan': '24840b3139d7415144b81e4f9f4c44670d15bed9', 'versionType': 'git'}, {'status': 'affected', 'version': '5033091de814ab4b5623faed2755f3064e19e2d2', 'lessThan': '8502e2c2d0633f99d94d22ae8dabc10caae1fc2a', 'versionType': 'git'}, {'status': 'affected', 'version': '5033091de814ab4b5623faed2755f3064e19e2d2', 'lessThan': '03a2cc1756a0570f887d624cd6c535ea0cbd4951', 'versionType': 'git'}], 'programFiles': ['drivers/base/memory.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.2'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.2', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.142', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.92', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.34', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.0.11', 'versionType': 'semver', 'lessThanOrEqual': '7.0.*'}, {'status': 'unaffected', 'version': '7.1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/base/memory.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: drivers/base/memory: fix memory block reference leak in poison accounting memblk_nr_poison_inc() and memblk_nr_poison_sub() look up a memory block via find_memory_block_by_id(), which acquires a reference to the memory block device. Both helpers use the returned memory block without dropping that reference, leaking the device reference on each successful lookup. Drop the reference after updating nr_hwpoison. Added Reference https://git.kernel.org/stable/c/03a2cc1756a0570f887d624cd6c535ea0cbd4951 Added Reference https://git.kernel.org/stable/c/24840b3139d7415144b81e4f9f4c44670d15bed9 Added Reference https://git.kernel.org/stable/c/686b4283f82cd630fafd7ca9b03dfc080b3ec8fa Added Reference https://git.kernel.org/stable/c/8502e2c2d0633f99d94d22ae8dabc10caae1fc2a Added Reference https://git.kernel.org/stable/c/ce60d9452a0f2effa72fd20ea270c59ca691d455