What’s Vulnerable › Vulnerabilities

CVE-2020-36775: f2fs: fix to avoid potential deadlock

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-26 · updated 2026-06-17
• Weakness: CWE-667

Description

In the Linux kernel, the following vulnerability has been resolved: f2fs: fix to avoid potential deadlock Using f2fs_trylock_op() in f2fs_write_compressed_pages() to avoid potential deadlock like we did in f2fs_write_single_data_page().

Affected products

• Linux kernel: before 5.4.189; from 5.5.0 before 5.6.7 — fixed in 5.4.189, 5.6.7

How to fix

Upgrade to a fixed version: Linux kernel 5.4.189, 5.6.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/8e8542437bb4070423c9754d5ba270ffdbae8c8d
• https://git.kernel.org/stable/c/df77fbd8c5b222c680444801ffd20e8bbc90a56e
• https://git.kernel.org/stable/c/0478ccdc8ea016de1ebaf6fe6da0275c2b258c5b
• https://git.kernel.org/stable/c/8e8542437bb4070423c9754d5ba270ffdbae8c8d
• https://git.kernel.org/stable/c/df77fbd8c5b222c680444801ffd20e8bbc90a56e

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