can: ucan: fix devres lifetime

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Summary

CVECVE-2026-46103
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 14:17:32 UTC
Updated2026-06-25 21:18:31 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: can: ucan: fix devres lifetime USB drivers bind to USB interfaces and any device managed resources should have their lifetime tied to the interface rather than parent USB device. This avoids issues like memory leaks when drivers are unbound without their devices being physically disconnected (e.g. on probe deferral or configuration changes). Fix the control message buffer lifetime so that it is released on driver unbind.

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

EPSS: 0.001640000 probability, percentile 0.059360000 (date 2026-06-24)

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 9f2d3eae88d26c29d96e42983b755940d9169cd9 a90f0815aaa9c629ac4750e7c71c357dd7f231d7 git Not specified
CNA Linux Linux affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 cb2e41e87a2893345859440017e7178bf7a4c70d git Not specified
CNA Linux Linux affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 3df5b9110ac08f67ccfe382fc172bfee95688eec git Not specified
CNA Linux Linux affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 4b7d07747400cfd7eff1ba7b8b5a7c8d5a58f705 git Not specified
CNA Linux Linux affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 10b7b676b78a7bd888d19729b459aad7fc1f428b git Not specified
CNA Linux Linux affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 c524c124e3094d2de12235a513854c03d06a2b58 git Not specified
CNA Linux Linux affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 c0d3ccc6929e4509076df8f30a4fb1dc5018b0ae git Not specified
CNA Linux Linux affected 9f2d3eae88d26c29d96e42983b755940d9169cd9 fed4626501c871890da287bec62a96e52da1af89 git Not specified
CNA Linux Linux affected 4.19 Not specified
CNA Linux Linux unaffected 4.19 semver Not specified
CNA Linux Linux unaffected 5.10.259 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.210 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.175 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.140 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.86 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.27 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.4 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/4b7d07747400cfd7eff1ba7b8b5a7c8d5a58f705 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/cb2e41e87a2893345859440017e7178bf7a4c70d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c0d3ccc6929e4509076df8f30a4fb1dc5018b0ae 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a90f0815aaa9c629ac4750e7c71c357dd7f231d7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/fed4626501c871890da287bec62a96e52da1af89 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c524c124e3094d2de12235a513854c03d06a2b58 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/3df5b9110ac08f67ccfe382fc172bfee95688eec 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/10b7b676b78a7bd888d19729b459aad7fc1f428b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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