CVE-2026-31651

mmc: vub300: fix NULL-deref on disconnect

Published: 4/24/2026 Last updated: 4/24/2026 Reserved: 3/9/2026

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.

CNA assigner: Linux (416baaa9-dc9f-4396-8d5f-8c081fb06d67) Requested by: n/a

Opam packages affected (29)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes ortools_solvers orun rawlink rawlink-eio rawlink-lwt restricted shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (2)

Product	Vendor	Version
Linux	Linux	n/a
Linux	Linux	n/a

References (8)

https://git.kernel.org/stable/c/6446516e626ce7c44bdadbcbb3d7677a2c52ce93
https://git.kernel.org/stable/c/ba3b9429de94958dc0060d9816a915dd75c34919
https://git.kernel.org/stable/c/517b58e1d067115f80d198feee10192da4c424d0
https://git.kernel.org/stable/c/6468cab1173f44f7a4b7a05ce8abfdfd1ce1557a
https://git.kernel.org/stable/c/53f2642d77ab5f1f303388bff5500363c6cf962c
https://git.kernel.org/stable/c/c83a282615d8f7ba28cebddd54600b419d562d82
https://git.kernel.org/stable/c/8d09e75759cb2afc0732acfb5a14a93c03805a61
https://git.kernel.org/stable/c/dff34ef879c5e73298443956a8b391311ba78d57