Bug 2155945 (CVE-2022-47941, ZDI-22-1687, ZDI-CAN-17815) - CVE-2022-47941 kernel: handling of SMB2_NEGOTIATE command doesn't properly release memory which could result in DoS
Summary: CVE-2022-47941 kernel: handling of SMB2_NEGOTIATE command doesn't properly re...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2022-47941, ZDI-22-1687, ZDI-CAN-17815
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2155950
Blocks: 2155936
TreeView+ depends on / blocked
 
Reported: 2022-12-23 01:46 UTC by Michael Kaplan
Modified: 2023-04-28 19:24 UTC (History)
38 users (show)

Fixed In Version: kernel 6.0-rc1
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Environment:
Last Closed: 2022-12-24 15:10:03 UTC
Embargoed:

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Description Michael Kaplan 2022-12-23 01:46:44 UTC 
This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of SMB2_NEGOTIATE commands. The issue results from the lack of memory release after its effective lifetime. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.

References: 

https://www.zerodayinitiative.com/advisories/ZDI-22-1687/
Comment 1 Michael Kaplan 2022-12-23 02:02:22 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2155950]
Comment 4 Sandipan Roy 2022-12-23 10:47:05 UTC 
There was no shipped kernel version that was seen affected by this problem. These files are not built in our source code.
Comment 5 Product Security DevOps Team 2022-12-24 15:09:58 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-47941
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