Bug 2283448 (CVE-2021-47505) - CVE-2021-47505 kernel: aio: fix use-after-free due to missing POLLFREE handling
Summary: CVE-2021-47505 kernel: aio: fix use-after-free due to missing POLLFREE handling
Keywords:
Status: NEW
Alias: CVE-2021-47505
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 10:57 UTC by ybuenos
Modified: 2024-11-12 09:33 UTC (History)
50 users (show)

Fixed In Version: kernel 4.19.221, kernel 5.4.165, kernel 5.10.85, kernel 5.15.8, kernel 5.16
Clone Of:
Environment:
Last Closed:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2024:9315 0 None None None 2024-11-12 09:33:21 UTC

Description ybuenos 2024-05-27 10:57:36 UTC 
In the Linux kernel, the following vulnerability has been resolved:

aio: fix use-after-free due to missing POLLFREE handling

The Linux kernel CVE team has assigned CVE-2021-47505 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024052452-CVE-2021-47505-427f@gregkh/T
Comment 4 Alex 2024-06-09 16:14:06 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47505 is: CHECK	Maybe valid. Check manually. with impact MODERATE (that is an approximation based on flags LOCK DEADLOCK DISK INIT RACE UAF 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.
Comment 6 errata-xmlrpc 2024-11-12 09:33:18 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:9315 https://access.redhat.com/errata/RHSA-2024:9315
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