cifs: Fix connections leak when tlink setup failed

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2022-49822
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-05-01 15:16:05 UTC
Updated2026-06-01 17:16:22 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: cifs: Fix connections leak when tlink setup failed If the tlink setup failed, lost to put the connections, then the module refcnt leak since the cifsd kthread not exit. Also leak the fscache info, and for next mount with fsc, it will print the follow errors: CIFS: Cache volume key already in use (cifs,127.0.0.1:445,TEST) Let's check the result of tlink setup, and do some cleanup.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

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

Problem Types: CWE-401

CVSS v3.1 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 56c762eb9bee330bb4e6d11c589434f2904d3ab6 775d6625f96b26b90b9be9164b855ea2c471c0e5 git Not specified
CNA Linux Linux affected 56c762eb9bee330bb4e6d11c589434f2904d3ab6 a9059e338fc000c0b87d8cf29e93c74fd703212e git Not specified
CNA Linux Linux affected 56c762eb9bee330bb4e6d11c589434f2904d3ab6 0a087842d10b5daa123ee5291e386cdd78413705 git Not specified
CNA Linux Linux affected 56c762eb9bee330bb4e6d11c589434f2904d3ab6 1dcdf5f5b2137185cbdd5385f29949ab3da4f00c git Not specified
CNA Linux Linux affected 5.0 Not specified
CNA Linux Linux unaffected 5.0 semver Not specified
CNA Linux Linux unaffected 5.10.258 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.81 5.15.* semver Not specified
CNA Linux Linux unaffected 6.0.10 6.0.* semver Not specified
CNA Linux Linux unaffected 6.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/775d6625f96b26b90b9be9164b855ea2c471c0e5 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1dcdf5f5b2137185cbdd5385f29949ab3da4f00c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a9059e338fc000c0b87d8cf29e93c74fd703212e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/0a087842d10b5daa123ee5291e386cdd78413705 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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