What’s Vulnerable › Vulnerabilities

CVE-2022-2526

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-09-09 · updated 2026-06-17
• Weakness: CWE-416

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.

Affected products

• Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: all versions
• NetApp H300S Firmware: all versions
• NetApp H410S Firmware: all versions
• NetApp H500S Firmware: all versions
• NetApp H700S Firmware: all versions
• systemd: 240

References

• https://github.com/systemd/systemd/commit/d973d94dec349fb676fdd844f6fe2ada3538f27c
• https://security.netapp.com/advisory/ntap-20221111-0005/
• https://github.com/systemd/systemd/commit/d973d94dec349fb676fdd844f6fe2ada3538f27c
• https://security.netapp.com/advisory/ntap-20221111-0005/

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