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CVE-2020-36775

f2fs: fix to avoid potential deadlock

MEDIUM
5.5
CVSS Score
Published: February 26, 2024 at 05:20 PM UTC
Updated: June 17, 2026 at 03:16 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
v < 5.4.1895.5.0 ≤ v < 5.6.75.6 ≤ v < 5.6.75.6 ≤ v < 5.74c8ff7095bef64fc47e996a938f7d57f9e077da35.6
Vendor states this is fixed in 8e8542437bb4070423c9754d5ba270ffdbae8c8d (fixed)
Vendor states this is fixed in df77fbd8c5b222c680444801ffd20e8bbc90a56e (fixed)
Affected range stops below 5.4.189, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 5.6 (unaffected)
Vendor states this is fixed in 5.6.7 (unaffected)
Vendor states this is fixed in 5.7 (unaffected)

References (3)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/8e8542437bb4070423c9754d5ba270ffdbae8c8d
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/df77fbd8c5b222c680444801ffd20e8bbc90a56e
Patch
Source: af854a3a-2127-422b-91ae-364da2661108
https://git.kernel.org/stable/c/0478ccdc8ea016de1ebaf6fe6da0275c2b258c5b

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-667

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