Bug 2513229 (CVE-2026-68423) - CVE-2026-68423 kernel: Linux kernel: Use-after-free in mtd_virt_concat_destroy()
Summary: CVE-2026-68423 kernel: Linux kernel: Use-after-free in mtd_virt_concat_destroy()
Keywords:
Status: NEW
Alias: CVE-2026-68423
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-10 12:26 UTC by OSIDB Bzimport
Modified: 2026-08-12 12:11 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-10 12:26:02 UTC 
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().
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