Bug 2540436 (CVE-2026-93285) - CVE-2026-93285 kernel: f2fs: embed f2fs_gc_kthread in f2fs_sb_info
Summary: CVE-2026-93285 kernel: f2fs: embed f2fs_gc_kthread in f2fs_sb_info
Keywords:
Status: NEW
Alias: CVE-2026-93285
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-24 16:48 UTC by OSIDB Bzimport
Modified: 2026-09-28 14:35 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-24 16:48:45 UTC 
In the Linux kernel, the following vulnerability has been resolved:

f2fs: embed f2fs_gc_kthread in f2fs_sb_info

Instead of allocating f2fs_gc_kthread dynamically, embed it in
f2fs_sb_info. This simplifies lifetime management and prepares for
fixing race conditions during teardown.

- __sbi_store			- remount|shutdown
				 - f2fs_stop_gc_thread
 - access sbi->gc_thread
				  - sbi->gc_thread = NULL
 - access sbi->gc_thread->f2fs_gc_task
Comment 1 gkamathe 2026-09-28 14:24:26 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-93285.mbox
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