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8.8
HIGH CVSS 3.1
CVE-2026-74313
vduse: hold vduse_lock across IDR lookup in open path
Overview
Description

In the Linux kernel, the following vulnerability has been resolved: vduse: hold vduse_lock across IDR lookup in open path vduse_dev_open() looks up struct vduse_dev through the IDR and then acquires dev->lock only after vduse_lock has been dropped. This leaves a window where a concurrent VDUSE_DESTROY_DEV can remove the same object from the IDR and free it before the open path locks the device, leading to a use-after-free. Close this race by keeping vduse_lock held until dev->lock has been acquired in the open path, matching the lock ordering already used by the destroy path.

Details
INFO

Published Date :

Aug. 15, 2026, 6:22 a.m.

Last Modified :

Aug. 17, 2026, 6:19 a.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Impact
Affected Products

The following products are affected by CVE-2026-74313 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.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
Fix race condition by holding vduse_lock until dev->lock is acquired in the open path.
  • Hold vduse_lock until dev->lock is acquired.
  • Ensure lock ordering consistency between open and destroy paths.
References
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-2026-74313.

URL Resource
https://git.kernel.org/stable/c/35483c5306e09b3190ff937089d404a78012695c
https://git.kernel.org/stable/c/5c1560be8aa6849356455af67518d35c551cbd95
https://git.kernel.org/stable/c/79e12c891940b0c4c75881b7fd82a8cbb8ac97be
https://git.kernel.org/stable/c/93ed4692f2299a40346025979f40e4a9b7b33af7
https://git.kernel.org/stable/c/a2d0a57538fd0b3b3ab75d64bb64f4cd2fab13a2
https://git.kernel.org/stable/c/d94e2947203aead590fd63f667d316d4475d65af
https://git.kernel.org/stable/c/e440e077748939839d9f76e24383b76b785f80ce
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-74313 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-2026-74313 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-2026-74313 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-74313 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.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 17, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
    Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': '35483c5306e09b3190ff937089d404a78012695c', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': '5c1560be8aa6849356455af67518d35c551cbd95', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': '93ed4692f2299a40346025979f40e4a9b7b33af7', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': 'd94e2947203aead590fd63f667d316d4475d65af', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': 'a2d0a57538fd0b3b3ab75d64bb64f4cd2fab13a2', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': '79e12c891940b0c4c75881b7fd82a8cbb8ac97be', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': 'e440e077748939839d9f76e24383b76b785f80ce', 'versionType': 'git'}], 'programFiles': ['drivers/vdpa/vdpa_user/vduse_dev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.15'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.15', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/vdpa/vdpa_user/vduse_dev.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': '35483c5306e09b3190ff937089d404a78012695c', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': '5c1560be8aa6849356455af67518d35c551cbd95', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': '93ed4692f2299a40346025979f40e4a9b7b33af7', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': 'd94e2947203aead590fd63f667d316d4475d65af', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': 'a2d0a57538fd0b3b3ab75d64bb64f4cd2fab13a2', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': '79e12c891940b0c4c75881b7fd82a8cbb8ac97be', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': 'e440e077748939839d9f76e24383b76b785f80ce', 'versionType': 'git'}], 'programFiles': ['drivers/vdpa/vdpa_user/vduse_dev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.15'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.15', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/vdpa/vdpa_user/vduse_dev.c'], 'defaultStatus': 'affected'}]
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Aug. 15, 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': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': '35483c5306e09b3190ff937089d404a78012695c', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': '5c1560be8aa6849356455af67518d35c551cbd95', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': '93ed4692f2299a40346025979f40e4a9b7b33af7', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': 'd94e2947203aead590fd63f667d316d4475d65af', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': 'a2d0a57538fd0b3b3ab75d64bb64f4cd2fab13a2', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': '79e12c891940b0c4c75881b7fd82a8cbb8ac97be', 'versionType': 'git'}, {'status': 'affected', 'version': 'c8a6153b6c59d95c0e091f053f6f180952ade91e', 'lessThan': 'e440e077748939839d9f76e24383b76b785f80ce', 'versionType': 'git'}], 'programFiles': ['drivers/vdpa/vdpa_user/vduse_dev.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.15'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.15', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.212', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.178', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.145', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.97', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc1', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/vdpa/vdpa_user/vduse_dev.c'], 'defaultStatus': 'affected'}]
    Added Description In the Linux kernel, the following vulnerability has been resolved: vduse: hold vduse_lock across IDR lookup in open path vduse_dev_open() looks up struct vduse_dev through the IDR and then acquires dev->lock only after vduse_lock has been dropped. This leaves a window where a concurrent VDUSE_DESTROY_DEV can remove the same object from the IDR and free it before the open path locks the device, leading to a use-after-free. Close this race by keeping vduse_lock held until dev->lock has been acquired in the open path, matching the lock ordering already used by the destroy path.
    Added Reference https://git.kernel.org/stable/c/35483c5306e09b3190ff937089d404a78012695c
    Added Reference https://git.kernel.org/stable/c/5c1560be8aa6849356455af67518d35c551cbd95
    Added Reference https://git.kernel.org/stable/c/79e12c891940b0c4c75881b7fd82a8cbb8ac97be
    Added Reference https://git.kernel.org/stable/c/93ed4692f2299a40346025979f40e4a9b7b33af7
    Added Reference https://git.kernel.org/stable/c/a2d0a57538fd0b3b3ab75d64bb64f4cd2fab13a2
    Added Reference https://git.kernel.org/stable/c/d94e2947203aead590fd63f667d316d4475d65af
    Added Reference https://git.kernel.org/stable/c/e440e077748939839d9f76e24383b76b785f80ce
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 8.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact