CVE-2022-2526: netapp active_iq_unified_manager Use After Free

Vulnerability summary

CVE-2022-2526 is a critical (CVSS 9.8) Use After Free vulnerability in netapp active_iq_unified_manager. EPSS estimates a 1.33% chance of exploitation in the next 30 days, higher than 70.7% of scored vulnerabilities.

Timeline

1. 09-09-2022
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

A use-after-free vulnerability was found in systemd. This issue occurs due to the on_stream_io() function and dns_stream_complete() function in 'resolved-dns-stream.c' not incrementing the reference counting for the DnsStream object. Therefore, other functions and callbacks called can dereference the DNSStream object, causing the use-after-free when the reference is still used later.

• CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.