HID: magicmouse: Do not crash on missing msc->input

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Summary

CVECVE-2026-43140
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-06 12:16:31 UTC
Updated2026-05-13 20:56:43 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: HID: magicmouse: Do not crash on missing msc->input Fake USB devices can send their own report descriptors for which the input_mapping() hook does not get called. In this case, msc->input stays NULL, leading to a crash at a later time. Detect this condition in the input_configured() hook and reject the device. This is not supposed to happen with actual magic mouse devices, but can be provoked by imposing as a magic mouse USB device.

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-476

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 64eb105d7f92fa48798106ac0d8bf17668eb2524 db5ba06e7af9325519a03e52fccf4a9e7c1fd9b2 git Not specified
CNA Linux Linux affected 64eb105d7f92fa48798106ac0d8bf17668eb2524 165912d4321c692321c02793068d30700b4e0f1a git Not specified
CNA Linux Linux affected 64eb105d7f92fa48798106ac0d8bf17668eb2524 f6a3860241fbb556fd72332fa31c5e787004413b git Not specified
CNA Linux Linux affected 64eb105d7f92fa48798106ac0d8bf17668eb2524 243e1165eb03aca97d87aafa9c3130593837a1c2 git Not specified
CNA Linux Linux affected 64eb105d7f92fa48798106ac0d8bf17668eb2524 922bd3e498a4b8e445def6e6ffea2ad3682ad516 git Not specified
CNA Linux Linux affected 64eb105d7f92fa48798106ac0d8bf17668eb2524 5bbe266272d86c0657e8253600f3d5b74fb7b2ae git Not specified
CNA Linux Linux affected 64eb105d7f92fa48798106ac0d8bf17668eb2524 36c83c1329dd881f290f7df2feadfb9a21775108 git Not specified
CNA Linux Linux affected 64eb105d7f92fa48798106ac0d8bf17668eb2524 17abd396548035fbd6179ee1a431bd75d49676a7 git Not specified
CNA Linux Linux affected 2.6.37 Not specified
CNA Linux Linux unaffected 2.6.37 semver Not specified
CNA Linux Linux unaffected 5.10.252 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.202 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.165 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.128 6.6.* 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/243e1165eb03aca97d87aafa9c3130593837a1c2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/5bbe266272d86c0657e8253600f3d5b74fb7b2ae 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/165912d4321c692321c02793068d30700b4e0f1a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/17abd396548035fbd6179ee1a431bd75d49676a7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/db5ba06e7af9325519a03e52fccf4a9e7c1fd9b2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/f6a3860241fbb556fd72332fa31c5e787004413b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/922bd3e498a4b8e445def6e6ffea2ad3682ad516 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/36c83c1329dd881f290f7df2feadfb9a21775108 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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