Bug 2267016 (CVE-2021-47049) - CVE-2021-47049 kernel: Drivers: hv: vmbus: Use after free in __vmbus_open()
Summary: CVE-2021-47049 kernel: Drivers: hv: vmbus: Use after free in __vmbus_open()
Keywords:
Status: NEW
Alias: CVE-2021-47049
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: 2267017
Blocks: 2267020
TreeView+ depends on / blocked
 
Reported: 2024-02-29 10:39 UTC by Avinash Hanwate
Modified: 2024-06-09 16:21 UTC (History)
50 users (show)

Fixed In Version: kernel 5.10.37, kernel 5.11.21, kernel 5.12.4, kernel 5.13
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Description Avinash Hanwate 2024-02-29 10:39:41 UTC 
In the Linux kernel, the following vulnerability has been resolved:

Drivers: hv: vmbus: Use after free in __vmbus_open()

The Linux kernel CVE team has assigned CVE-2021-47049 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024022840-CVE-2021-47049-5cc6@gregkh/T/#u
Comment 1 Avinash Hanwate 2024-02-29 10:40:24 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2267017]
Comment 2 Justin M. Forbes 2024-02-29 17:30:48 UTC 
This was fixed for Fedora with the 5.12.4 stable kernel updates.
Comment 3 Alex 2024-06-09 16:21:45 UTC 
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47049 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags INIT SIMPLEFIX 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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