CVE-2026-74614
vsock/virtio: read virtqueues under worker locks
Description
In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: read virtqueues under worker locks Commit bd50c5dc182b ("vsock/virtio: add support for device suspend/resume") made the *_run flags transition from false to true when restore installs replacement virtqueues. The RX, TX and event workers read their virtqueue before locking and checking the corresponding flag, so a worker delayed across freeze and restore can observe the replacement queue's running state while retaining a pointer to the deleted queue. Read each virtqueue under its mutex after checking the run flag, keeping the pointer and state in the same queue generation.
INFO
Published Date :
Aug. 22, 2026, 4:16 p.m.
Last Modified :
Aug. 22, 2026, 4:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-74614
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
- Read virtqueue under its mutex after checking run flag.
- Ensure pointer and state are in the same queue generation.
- Apply kernel updates to resolve the issue.
- Test system stability after applying updates.
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-2026-74614.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-74614 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-2026-74614
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-2026-74614 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-74614 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.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 22, 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': '762c251c7f5c4ee5bef71460c6e822ed293fd69f', 'lessThan': '941329ce14c5f481223a10d1d4c8b57ea7f3048a', 'versionType': 'git'}, {'status': 'affected', 'version': 'bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c', 'lessThan': '29dd10583bf9d2744cd84b862e4257c0a5699570', 'versionType': 'git'}, {'status': 'affected', 'version': 'bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c', 'lessThan': 'a1fb0c5b8a7c2753758aeced40971f99449dde0c', 'versionType': 'git'}, {'status': 'affected', 'version': 'bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c', 'lessThan': 'eae099c764c7ebdb842eb1f638913e310bdd6513', 'versionType': 'git'}, {'status': 'affected', 'version': 'bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c', 'lessThan': 'bd43a7ec668be428265b3209eb43647aedcf720a', 'versionType': 'git'}, {'status': 'affected', 'version': 'bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c', 'lessThan': '1cecb4202afdbeddcf29d59baf596ac6ab753f7f', 'versionType': 'git'}, {'status': 'affected', 'version': 'bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c', 'lessThan': 'ebac8f6b1ef0e9278afe204b8692a7479988dace', 'versionType': 'git'}, {'status': 'affected', 'version': '5.15.138', 'lessThan': '5.15.216', 'versionType': 'semver'}], 'programFiles': ['net/vmw_vsock/virtio_transport.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '5.19'}, {'status': 'unaffected', 'version': '0', 'lessThan': '5.19', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '5.15.216', 'versionType': 'semver', 'lessThanOrEqual': '5.15.*'}, {'status': 'unaffected', 'version': '6.1.183', 'versionType': 'semver', 'lessThanOrEqual': '6.1.*'}, {'status': 'unaffected', 'version': '6.6.152', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.104', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.45', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.9', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/vmw_vsock/virtio_transport.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: read virtqueues under worker locks Commit bd50c5dc182b ("vsock/virtio: add support for device suspend/resume") made the *_run flags transition from false to true when restore installs replacement virtqueues. The RX, TX and event workers read their virtqueue before locking and checking the corresponding flag, so a worker delayed across freeze and restore can observe the replacement queue's running state while retaining a pointer to the deleted queue. Read each virtqueue under its mutex after checking the run flag, keeping the pointer and state in the same queue generation. Added Reference https://git.kernel.org/stable/c/1cecb4202afdbeddcf29d59baf596ac6ab753f7f Added Reference https://git.kernel.org/stable/c/29dd10583bf9d2744cd84b862e4257c0a5699570 Added Reference https://git.kernel.org/stable/c/941329ce14c5f481223a10d1d4c8b57ea7f3048a Added Reference https://git.kernel.org/stable/c/a1fb0c5b8a7c2753758aeced40971f99449dde0c Added Reference https://git.kernel.org/stable/c/bd43a7ec668be428265b3209eb43647aedcf720a Added Reference https://git.kernel.org/stable/c/eae099c764c7ebdb842eb1f638913e310bdd6513 Added Reference https://git.kernel.org/stable/c/ebac8f6b1ef0e9278afe204b8692a7479988dace