Bug 2282925 (CVE-2021-47491) - CVE-2021-47491 kernel: mm: khugepaged: skip huge page collapse for special files
Summary: CVE-2021-47491 kernel: mm: khugepaged: skip huge page collapse for special files
Keywords:
Status: NEW
Alias: CVE-2021-47491
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 2282978
TreeView+ depends on / blocked
 
Reported: 2024-05-23 10:26 UTC by ybuenos
Modified: 2024-06-17 10:08 UTC (History)
49 users (show)

Fixed In Version: kernel 5.10.78, kernel 5.14.16, kernel 5.15
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Description ybuenos 2024-05-23 10:26:58 UTC 
In the Linux kernel, the following vulnerability has been resolved:

mm: khugepaged: skip huge page collapse for special files

The Linux kernel CVE team has assigned CVE-2021-47491 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024052241-CVE-2021-47491-437d@gregkh/T
Comment 4 Alex 2024-06-09 17:11:28 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47491 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags IMPROVEONLY  ; these flags parsed automatically based on patch 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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