CVE-2026-23232
Deadlock Vulnerability in Linux Kernel f2fs Checkpoint Handling
Publication date: 2026-03-04
Last updated on: 2026-03-17
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | From 6.19 (inc) to 6.19.3 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-667 | The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability in the Linux kernel is related to a deadlock issue caused by a specific commit involving the f2fs filesystem. The original patch introduced a sequence of locks during write and remount operations that could lead to a deadlock situation. Specifically, the deadlock arises from conflicting lock acquisitions between write operations and checkpoint enabling, involving locks on pages and a read-write semaphore. The vulnerability was resolved by reverting the problematic commit.
How can this vulnerability impact me? :
This vulnerability can cause a deadlock in the Linux kernel's f2fs filesystem operations. A deadlock means that certain processes or threads may become stuck waiting indefinitely for locks to be released, potentially causing system hangs or degraded performance. This can impact system stability and availability, especially in environments relying on the f2fs filesystem.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
The vulnerability has been resolved by reverting the commit 196c81fdd438f7ac429d5639090a9816abb9760a that caused a deadlock in the Linux kernel's f2fs filesystem code.
To mitigate this vulnerability, you should update your Linux kernel to a version that includes this revert patch, effectively removing the problematic commit.