Use-After-Free in Linux Kernel MTD Virt_Concat
CVE-2026-68424 Published on August 10, 2026
mtd: virt_concat: fix use-after-free in mtd_virt_concat_destroy_joins()
In the Linux kernel, the following vulnerability has been resolved:
mtd: virt_concat: fix use-after-free in mtd_virt_concat_destroy_joins()
mtd_concat_destroy() frees item->concat so calling
mtd_virt_concat_put_mtd_devices(item->concat) leads to a use after free.
Fix this by moving mtd_virt_concat_put_mtd_devices() before
mtd_concat_destroy()
Products Associated with CVE-2026-68424
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Affected Versions
Linux:- Version 43db6366fc2de02050e66389f5628d3fdc9af10a and below 4d91d783f93430c0efa834daff6640c07d87ebbc is affected.
- Version 43db6366fc2de02050e66389f5628d3fdc9af10a and below 75c0c09541b49daa08fddbc2c18c2232f4eab7d8 is affected.
- Version 7.1 is affected.
- Before 7.1 is unaffected.
- Version 7.1.6, <= 7.1.* is unaffected.
- Version 7.2-rc4, <= * is unaffected.