Bug 2274604 (CVE-2021-47217) - CVE-2021-47217 kernel: x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails
Summary: CVE-2021-47217 kernel: x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if...
Keywords:
Status: NEW
Alias: CVE-2021-47217
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: 2274606
TreeView+ depends on / blocked
 
Reported: 2024-04-11 20:35 UTC by Marco Benatto
Modified: 2024-06-09 16:51 UTC (History)
49 users (show)

Fixed In Version: kernel 4.19.218, kernel 5.4.162, kernel 5.10.82, kernel 5.15.5, kernel 5.16
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)

Description Marco Benatto 2024-04-11 20:35:18 UTC
In the Linux kernel, the following vulnerability has been resolved:

x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails

The Linux kernel CVE team has assigned CVE-2021-47217 to this issue.

Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024041006-CVE-2021-47217-a7d0@gregkh/T

Comment 3 Alex 2024-06-09 16:51:16 UTC
The result of automatic check (that is developed by Alexander Larkin) for this CVE-2021-47217 is: CHECK	Maybe valid. Check manually. with impact LOW (that is an approximation based on flags DANGER NULLPTR INIT 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.


Note You need to log in before you can comment on or make changes to this bug.