CVEvulnerability
CVE-2026-90045
7.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-09-16
- Last modified
- 2026-10-21
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
In the Linux kernel, the following vulnerability has been resolved:
USB: gadget: ffs: fix mm lifetime handling
io_data stores a pointer to the submitting task's mm_struct,
but does not currently hold a reference to it while async
requests are pending.
This can result in a use-after-free if the task exits before
completion handling finishes.
Take a reference with mmgrab() when queuing the read request
and release it with mmdrop() on request completion.
References
- https://git.kernel.org/stable/c/1625827648f4e1595ea6ba5521bc87ee5088b32b git.kernel.org
- https://git.kernel.org/stable/c/5eb5c72c72fef76cb765ef1669b62b6a3ba1bfc8 git.kernel.org
- https://git.kernel.org/stable/c/7411de0ce3b45286de1de82526795658ea6eacb0 git.kernel.org
- https://git.kernel.org/stable/c/aee2fde0f39e2b667084f4d5cc323a5c5543d733 git.kernel.org
- https://git.kernel.org/stable/c/f3d31484b3f26d63c09e5569ebfaa1079a17f171 git.kernel.org