CVE-2026-68324
iommu/intel: Fix out-of-bounds memset in dmar_latency_disable()
Description
In the Linux kernel, the following vulnerability has been resolved: iommu/intel: Fix out-of-bounds memset in dmar_latency_disable() dmar_latency_disable() intends to zero out only the single latency_statistic entry for the given type, but the memset size was computed as sizeof(*lstat) * DMAR_LATENCY_NUM, which clears the entire array starting from &lstat[type]. When type > 0, this writes beyond the end of the allocated array, corrupting adjacent memory. Fix by using sizeof(*lstat) to clear only the target entry.
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 10, 2026, 1:20 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-68324
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 Linux kernel patch for the iommu/intel fix.
- Ensure the kernel is updated to a version with the fix.
- Verify the dmar_latency_disable function logic.
- Test memory corruption after update.
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-2026-68324.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68324 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-2026-68324
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-2026-68324 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68324 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
Aug. 10, 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': '55ee5e67a59a1b6f388d7a1c7b24022145f47a3e', 'lessThan': '3078d82e7fe9048a2b90a992e71af7cd7ef881fa', 'versionType': 'git'}, {'status': 'affected', 'version': '55ee5e67a59a1b6f388d7a1c7b24022145f47a3e', 'lessThan': '866a35735e56b9dc81cbc33899255134adf6d8b3', 'versionType': 'git'}, {'status': 'affected', 'version': '55ee5e67a59a1b6f388d7a1c7b24022145f47a3e', 'lessThan': 'd06fea9b85f038690f55e72fe0c45e113715a85a', 'versionType': 'git'}, {'status': 'affected', 'version': '55ee5e67a59a1b6f388d7a1c7b24022145f47a3e', 'lessThan': '0e28ca1c3204b51068579defc904a0dfba5e5c57', 'versionType': 'git'}, {'status': 'affected', 'version': '55ee5e67a59a1b6f388d7a1c7b24022145f47a3e', 'lessThan': '754f8efe45f87e3a9c6871b645b2f9d46d1b407b', 'versionType': 'git'}], 'programFiles': ['drivers/iommu/intel/perf.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.14'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.14', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/iommu/intel/perf.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: iommu/intel: Fix out-of-bounds memset in dmar_latency_disable() dmar_latency_disable() intends to zero out only the single latency_statistic entry for the given type, but the memset size was computed as sizeof(*lstat) * DMAR_LATENCY_NUM, which clears the entire array starting from &lstat[type]. When type > 0, this writes beyond the end of the allocated array, corrupting adjacent memory. Fix by using sizeof(*lstat) to clear only the target entry. Added Reference https://git.kernel.org/stable/c/0e28ca1c3204b51068579defc904a0dfba5e5c57 Added Reference https://git.kernel.org/stable/c/3078d82e7fe9048a2b90a992e71af7cd7ef881fa Added Reference https://git.kernel.org/stable/c/754f8efe45f87e3a9c6871b645b2f9d46d1b407b Added Reference https://git.kernel.org/stable/c/866a35735e56b9dc81cbc33899255134adf6d8b3 Added Reference https://git.kernel.org/stable/c/d06fea9b85f038690f55e72fe0c45e113715a85a