CVE-2022-2526

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 0.18%
Third-Party Advisory github.com Third-Party Advisory netapp.com
Affected: n/a systemd-resolved
Published at:
Updated at:

References

Link Tags
https://github.com/systemd/systemd/commit/d973d94dec349fb676fdd844f6fe2ada3538f27c third party advisory patch
https://security.netapp.com/advisory/ntap-20221111-0005/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2022-2526?
CVE-2022-2526 has been scored as a critical severity vulnerability.
How to fix CVE-2022-2526?
To fix CVE-2022-2526, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-2526 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-2526 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-2526?
CVE-2022-2526 affects n/a systemd-resolved.
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