mmc: vub300: fix NULL-deref on disconnect

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Summary

CVECVE-2026-31651
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-24 15:16:44 UTC
Updated2026-07-14 13:18:46 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: mmc: vub300: fix NULL-deref on disconnect Make sure to deregister the controller before dropping the reference to the driver data on disconnect to avoid NULL-pointer dereferences or use-after-free.

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: 0.000240000 probability, percentile 0.067850000 (date 2026-04-27)

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 88095e7b473a3d9ec3b9c60429576e9cbd327c89 6446516e626ce7c44bdadbcbb3d7677a2c52ce93 git Not specified
CNA Linux Linux affected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 ba3b9429de94958dc0060d9816a915dd75c34919 git Not specified
CNA Linux Linux affected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 517b58e1d067115f80d198feee10192da4c424d0 git Not specified
CNA Linux Linux affected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 6468cab1173f44f7a4b7a05ce8abfdfd1ce1557a git Not specified
CNA Linux Linux affected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 53f2642d77ab5f1f303388bff5500363c6cf962c git Not specified
CNA Linux Linux affected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 c83a282615d8f7ba28cebddd54600b419d562d82 git Not specified
CNA Linux Linux affected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 8d09e75759cb2afc0732acfb5a14a93c03805a61 git Not specified
CNA Linux Linux affected 88095e7b473a3d9ec3b9c60429576e9cbd327c89 dff34ef879c5e73298443956a8b391311ba78d57 git Not specified
CNA Linux Linux affected 3.0 Not specified
CNA Linux Linux unaffected 3.0 semver Not specified
CNA Linux Linux unaffected 5.10.253 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.203 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.169 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.135 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.82 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.23 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.13 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.5 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.6 * custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.5 * custom Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/517b58e1d067115f80d198feee10192da4c424d0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-082556.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/8d09e75759cb2afc0732acfb5a14a93c03805a61 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/6446516e626ce7c44bdadbcbb3d7677a2c52ce93 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
cert-portal.siemens.com/productcert/html/ssa-019113.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
git.kernel.org/stable/c/53f2642d77ab5f1f303388bff5500363c6cf962c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/dff34ef879c5e73298443956a8b391311ba78d57 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/c83a282615d8f7ba28cebddd54600b419d562d82 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/ba3b9429de94958dc0060d9816a915dd75c34919 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/6468cab1173f44f7a4b7a05ce8abfdfd1ce1557a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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