Bug 2266267 (CVE-2020-36775) - CVE-2020-36775 kernel: potential deadlock in f2fs_write_single_data_page
Summary: CVE-2020-36775 kernel: potential deadlock in f2fs_write_single_data_page
Keywords:
Status: NEW
Alias: CVE-2020-36775
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2266268
Blocks: 2266266
TreeView+ depends on / blocked
 
Reported: 2024-02-27 11:37 UTC by Rohit Keshri
Modified: 2024-04-08 12:22 UTC (History)
49 users (show)

Fixed In Version:
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Doc Text:
A vulnerability was found in the Linux kernel. The flaw exists in f2fs_write_single_data_page due to deadlock in the Linux kernel.
Clone Of:
Environment:
Last Closed:
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Description Rohit Keshri 2024-02-27 11:37:54 UTC 
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().

https://git.kernel.org/stable/c/0478ccdc8ea016de1ebaf6fe6da0275c2b258c5b
https://git.kernel.org/stable/c/8e8542437bb4070423c9754d5ba270ffdbae8c8d
https://git.kernel.org/stable/c/df77fbd8c5b222c680444801ffd20e8bbc90a56e
Comment 1 Rohit Keshri 2024-02-27 11:39:43 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2266268]
Comment 4 Justin M. Forbes 2024-02-27 19:10:52 UTC 
This was fixed for Fedora with the 5.6.7 stable kernel updates.
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