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

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于f2fs存在死锁问题。

AI Predicted 3.3 Difficulty: Moderate EPSS 0.17% · P7

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 6

VendorProduct Version RangeStatus
Linux Linux 4c8ff7095bef64fc47e996a938f7d57f9e077da3< 8e8542437bb4070423c9754d5ba270ffdbae8c8d affected
4c8ff7095bef64fc47e996a938f7d57f9e077da3< df77fbd8c5b222c680444801ffd20e8bbc90a56e affected
5.6 affected
< 5.6 unaffected
5.6.7≤ 5.6.* unaffected
5.7≤ * unaffected
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I. Basic Information for CVE-2020-36775

Vulnerability Information
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Vulnerability Title
f2fs: fix to avoid potential deadlock
Source: CVE Program / CVE List V5
Vulnerability 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().
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于f2fs存在死锁问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 4c8ff7095bef64fc47e996a938f7d57f9e077da3 ~ 8e8542437bb4070423c9754d5ba270ffdbae8c8d -
Linux Linux 5.6 -

II. Public POCs for CVE-2020-36775

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III. Intelligence Information for CVE-2020-36775

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Other References for CVE-2020-36775 (3)

Same Patch Batch · Linux · 2024-02-26 · 6 CVEs total

CVE-2019-25160 9.1 CRITICAL netlabel: fix out-of-bounds memory accesses
CVE-2019-25162 7.8 HIGH i2c: Fix a potential use after free
CVE-2023-52474 7.8 HIGH IB/hfi1: Fix bugs with non-PAGE_SIZE-end multi-iovec user SDMA requests
CVE-2024-26606 binder: signal epoll threads of self-work
CVE-2021-46906 HID: usbhid: fix info leak in hid_submit_ctrl

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2020-36775

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