CVE-2026-68423 PUBLISHED

mtd: virt_concat: fix use-after-free in mtd_virt_concat_destroy()

Assigner: Linux
Reserved: 30.07.2026 Published: 10.08.2026 Updated: 10.08.2026

In the Linux kernel, the following vulnerability has been resolved:

mtd: virt_concat: fix use-after-free in mtd_virt_concat_destroy()

mtd_concat_destroy() frees item->concat so calling mtd_virt_concat_put_mtd_devices(item->concat) after that leads to a use-after-free.

Fix it by moving mtd_virt_concat_put_mtd_devices() before mtd_concat_destroy().

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 43db6366fc2de02050e66389f5628d3fdc9af10a to d36520e5da8bf87265b334def0daaadf3603cc62 (excl.)
  • affected from 43db6366fc2de02050e66389f5628d3fdc9af10a to 4b45d7836b9526b8776af5f29219615be9417230 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 7.1 is affected
  • unaffected from 0 to 7.1 (excl.)
  • unaffected from 7.1.6 to 7.1.* (incl.)
  • unaffected from 7.2-rc4 to * (incl.)

References