Use Count Error in Oracle Linux UEK6 U3 Leads to Denial of Service
CVE-2022-21504

5.5MEDIUM

Key Information:

Vendor

Oracle
Status
Oracle Linux
Vendor
CVE Published:
14 June 2022

What is CVE-2022-21504?

A critical issue has been identified in Oracle Linux UEK6 U3 where an inappropriate file descriptor count management leads to a use count error. This flaw permits a socket's file descriptor to be prematurely closed and freed while it is still in operation. Attackers with local access can exploit this vulnerability to manipulate the socket, potentially triggering a denial of service. This situation arises due to concurrency issues in the kernel's file descriptor management.

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Affected Version(s)

Oracle Linux Oracle Linux: 7

Oracle Linux Oracle Linux: 8

References

https://github.com/oracle/linux-uek/commit/49c68f5f892d8c...
x_refsource_MISC

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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