What’s Vulnerable › Vulnerabilities

CVE-2026-31651: mmc: vub300: fix NULL-deref on disconnect

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-24 · updated 2026-10-15
• Weakness: CWE-476

Description

In 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.

Affected products

• Linux kernel: from 3.0.1 before 5.10.253; from 5.11 before 5.15.203; from 5.16 before 6.1.169; from 6.2 before 6.6.135; from 6.7 before 6.12.82; from 6.13 before 6.18.23 — fixed in 5.10.253, 5.15.203, 6.1.169, 6.12.82, 6.18.23, 6.19.13

How to fix

Upgrade to a fixed version: Linux kernel 5.10.253, 5.15.203, 6.1.169, 6.12.82. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/517b58e1d067115f80d198feee10192da4c424d0
• https://git.kernel.org/stable/c/53f2642d77ab5f1f303388bff5500363c6cf962c
• https://git.kernel.org/stable/c/6446516e626ce7c44bdadbcbb3d7677a2c52ce93
• https://git.kernel.org/stable/c/6468cab1173f44f7a4b7a05ce8abfdfd1ce1557a
• https://git.kernel.org/stable/c/8d09e75759cb2afc0732acfb5a14a93c03805a61
• https://git.kernel.org/stable/c/ba3b9429de94958dc0060d9816a915dd75c34919
• https://git.kernel.org/stable/c/c83a282615d8f7ba28cebddd54600b419d562d82
• https://git.kernel.org/stable/c/dff34ef879c5e73298443956a8b391311ba78d57
• https://cert-portal.siemens.com/productcert/html/ssa-019113.html
• https://cert-portal.siemens.com/productcert/html/ssa-082556.html
• https://cert-portal.siemens.com/productcert/html/ssa-457936.html

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