Bug 2283447 (CVE-2021-47506) - CVE-2021-47506 kernel: nfsd: fix use-after-free due to delegation race
Summary: CVE-2021-47506 kernel: nfsd: fix use-after-free due to delegation race
Keywords:
Status: NEW
Alias: CVE-2021-47506
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:
Blocks: 2283494
TreeView+ depends on / blocked
 
Reported: 2024-05-27 10:56 UTC by ybuenos
Modified: 2024-07-22 17:41 UTC (History)
50 users (show)

Fixed In Version: kernel 4.4.296, kernel 4.9.294, kernel 4.14.259, kernel 4.19.222, kernel 5.4.168, kernel 5.10.85, kernel 5.15.8, kernel 5.16
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)

Description ybuenos 2024-05-27 10:56:20 UTC
In the Linux kernel, the following vulnerability has been resolved:

nfsd: fix use-after-free due to delegation race

The Linux kernel CVE team has assigned CVE-2021-47506 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024052452-CVE-2021-47506-c143@gregkh/T

Comment 2 Alex 2024-06-09 16:12:24 UTC
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47506 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is an approximation based on flags DANGER DISK SIMPLEFIX RACE UAF  ; 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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