vsock/virtio: read virtqueues under worker locks

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74614
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-22 16:16:34 UTC
Updated2026-08-25 06:18:39 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 8.4 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.001420000 probability, percentile 0.037240000 (date 2026-08-25)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.4HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.4HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 762c251c7f5c4ee5bef71460c6e822ed293fd69f 941329ce14c5f481223a10d1d4c8b57ea7f3048a git Not specified
CNA Linux Linux affected bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c 29dd10583bf9d2744cd84b862e4257c0a5699570 git Not specified
CNA Linux Linux affected bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c a1fb0c5b8a7c2753758aeced40971f99449dde0c git Not specified
CNA Linux Linux affected bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c eae099c764c7ebdb842eb1f638913e310bdd6513 git Not specified
CNA Linux Linux affected bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c bd43a7ec668be428265b3209eb43647aedcf720a git Not specified
CNA Linux Linux affected bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c 1cecb4202afdbeddcf29d59baf596ac6ab753f7f git Not specified
CNA Linux Linux affected bd50c5dc182b0a52599f87b429f9a5a9cbfc9b1c ebac8f6b1ef0e9278afe204b8692a7479988dace git Not specified
CNA Linux Linux affected 5.15.138 5.15.216 semver Not specified
CNA Linux Linux affected 5.19 Not specified
CNA Linux Linux unaffected 5.19 semver Not specified
CNA Linux Linux unaffected 5.15.216 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.183 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.152 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.104 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.45 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.9 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/1cecb4202afdbeddcf29d59baf596ac6ab753f7f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/29dd10583bf9d2744cd84b862e4257c0a5699570 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a1fb0c5b8a7c2753758aeced40971f99449dde0c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/bd43a7ec668be428265b3209eb43647aedcf720a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/eae099c764c7ebdb842eb1f638913e310bdd6513 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/941329ce14c5f481223a10d1d4c8b57ea7f3048a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/ebac8f6b1ef0e9278afe204b8692a7479988dace 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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