CVE-2022-49742 f2fs: initialize locks earlier in f2fs_fill_super()

What is CVE-2022-49742?

CVE-2022-49742 is a medium-severity vulnerability in Linux kernel, published on 27 Mar 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

f2fs: initialize locks earlier in f2fs_fill_super()

syzbot is reporting lockdep warning at f2fs_handle_error() [1], for spin_lock(&sbi->error_lock) is called before spin_lock_init() is called. For safe locking in error handling, move initialization of locks (and obvious structures) in f2fs_fill_super() to immediately after memory allocation.

Weakness: CWE-667

Which versions are affected by CVE-2022-49742?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-49742?

Apply the vendor's patch.

Is CVE-2022-49742 being exploited?

There is no known exploitation of CVE-2022-49742 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-60306, DEBIAN-CVE-2022-49742, GHSA-88rq-q8gm-2chx, ROOT-OS-DEBIAN-11-CVE-2022-49742, ROOT-OS-UBUNTU-2204-CVE-2022-49742, UBUNTU-CVE-2022-49742.