CVE-2026-93285: f2fs: embed f2fs_gc_kthread in f2fs_sb_info
Published Sep 24, 2026
·Updated
In the Linux kernel, the following vulnerability has been resolved:
f2fs: embed f2fsgckthread in f2fssbinfo
Instead of allocating f2fsgckthread dynamically, embed it in f2fssbinfo. This simplifies lifetime management and prepares for fixing race conditions during teardown.
- sbistore - remount|shutdown - f2fsstopgcthread - access sbi->gcthread - sbi->gcthread = NULL - access sbi->gcthread->f2fsgctask
Affected Software
1 affected component
Linux Linux kernel
Event History
Sep 24, 2026
CVE Published
via MITRE·04:02 PM
Data Sourced
via MITRE·04:02 PM
Description
Data Sourced
via NVD·05:17 PM
Description
Frequently Asked Questions
1
Which operational paths are associated with this race condition?
The affected lifetime sequence involves F2FS garbage-collection thread teardown during remount or shutdown. The race occurs around stopping the GC thread, clearing the GC-thread pointer, and subsequently accessing the thread task through that pointer.