Bug 2266365 (CVE-2021-46927) - CVE-2021-46927 kernel: nitro_enclaves: Use get_user_pages_unlocked() call to handle mmap assert
Summary: CVE-2021-46927 kernel: nitro_enclaves: Use get_user_pages_unlocked() call to ...
Keywords:
Status: NEW
Alias: CVE-2021-46927
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: 2266367
Blocks: 2266445
TreeView+ depends on / blocked
 
Reported: 2024-02-27 17:15 UTC by Mauro Matteo Cascella
Modified: 2024-06-09 15:11 UTC (History)
49 users (show)

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Description Mauro Matteo Cascella 2024-02-27 17:15:56 UTC 
In the Linux kernel, the following vulnerability has been resolved:

nitro_enclaves: Use get_user_pages_unlocked() call to handle mmap assert

The Linux kernel CVE team has assigned CVE-2021-46927 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024022749-CVE-2021-46927-ae70@gregkh/T/#u
Comment 1 Mauro Matteo Cascella 2024-02-27 17:16:35 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2266367]
Comment 6 Justin M. Forbes 2024-02-27 18:32:12 UTC 
This was fixed for Fedora with the 5.15.13 stable kernel updates.
Comment 9 Alex 2024-06-09 15:11:08 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-46927 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is approximation based on flags READ VIRT  ; 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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