most: core: fix resource leak in most_register_interface error paths

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2025-71272
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-06 12:16:27 UTC
Updated2026-05-12 21:28:49 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: most: core: fix resource leak in most_register_interface error paths The function most_register_interface() did not correctly release resources if it failed early (before registering the device). In these cases, it returned an error code immediately, leaking the memory allocated for the interface. Fix this by initializing the device early via device_initialize() and calling put_device() on all error paths. The most_register_interface() is expected to call put_device() on error which frees the resources allocated in the caller. The put_device() either calls release_mdev() or dim2_release(), depending on the caller. Switch to using device_add() instead of device_register() to handle the split initialization.

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 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c a49028a796d7b94f8e3ab9bd34b18f36be235459 git Not specified
CNA Linux Linux affected 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c af0b99b2214a10554adb5b868240d23af6e64e71 git Not specified
CNA Linux Linux affected 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c 2f483f3817fb0e4209ac5de928778b1da0cc8574 git Not specified
CNA Linux Linux affected 723de0f9171eeb49a3ae98cae82ebbbb992b3a7c 1f4c9d8a1021281750c6cda126d6f8a40cc24e71 git Not specified
CNA Linux Linux affected 5.6 Not specified
CNA Linux Linux unaffected 5.6 semver Not specified
CNA Linux Linux unaffected 6.12.75 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.16 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.6 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/2f483f3817fb0e4209ac5de928778b1da0cc8574 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a49028a796d7b94f8e3ab9bd34b18f36be235459 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/1f4c9d8a1021281750c6cda126d6f8a40cc24e71 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/af0b99b2214a10554adb5b868240d23af6e64e71 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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