Bug 2282370 (CVE-2021-47375) - CVE-2021-47375 kernel: blktrace: Fix uaf in blk_trace access after removing by sysfs
Summary: CVE-2021-47375 kernel: blktrace: Fix uaf in blk_trace access after removing b...
Keywords:
Status: NEW
Alias: CVE-2021-47375
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: 2282406
TreeView+ depends on / blocked
 
Reported: 2024-05-22 10:09 UTC by ybuenos
Modified: 2024-09-17 23:14 UTC (History)
50 users (show)

Fixed In Version: kernel 4.4.286, kernel 4.9.285, kernel 4.14.249, kernel 4.19.209, kernel 5.4.150, kernel 5.10.70, kernel 5.14.9, kernel 5.15
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)

Description ybuenos 2024-05-22 10:09:13 UTC
In the Linux kernel, the following vulnerability has been resolved:

blktrace: Fix uaf in blk_trace access after removing by sysfs

The Linux kernel CVE team has assigned CVE-2021-47375 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024052141-CVE-2021-47375-8849@gregkh/T

Comment 2 Alex 2024-06-09 16:07:28 UTC
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47375 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is an approximation based on flags LOCK NULLPTR INIT TRACE 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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