Bug 2267162 (CVE-2021-47066) - CVE-2021-47066 kernel: async_xor: increase src_offs when dropping destination page cause data corruption
Summary: CVE-2021-47066 kernel: async_xor: increase src_offs when dropping destination...
Keywords:
Status: NEW
Alias: CVE-2021-47066
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: 2267163
Blocks: 2267188
TreeView+ depends on / blocked
 
Reported: 2024-03-01 04:47 UTC by Avinash Hanwate
Modified: 2025-09-06 08:30 UTC (History)
48 users (show)

Fixed In Version: kernel 5.10.37, kernel 5.11.21, kernel 5.12.4, kernel 5.13
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description Avinash Hanwate 2024-03-01 04:47:54 UTC 
In the Linux kernel, the following vulnerability has been resolved:

async_xor: increase src_offs when dropping destination page

The Linux kernel CVE team has assigned CVE-2021-47066 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024022954-CVE-2021-47066-02e0@gregkh/T/#u
Comment 1 Avinash Hanwate 2024-03-01 04:48:32 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2267163]
Comment 5 Justin M. Forbes 2024-03-01 21:12:33 UTC 
This was fixed for Fedora with the 5.12.4 stable kernel updates.
Comment 7 Alex 2024-06-09 15:10:08 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47066 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags DANGER DISK  ; these flags parsed automatically based on patche data). Such automatic check happens only for Low/Moderates (and only when not from reporter, but parsing already existing CVE). Highs always checked manually (I check it myself and then we check it again in Remediation team). In rare cases some of the Moderates could be increased to High later.
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