by Kastro
Paper/Archive/CVE-2022-2526

CVE-2022-2526

redhat — A use-after-free vulnerability was found in systemd.

EPSS 1%CVSS 9.8
critical.is priorityof 100
44
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 71.2.712 × 2014.2No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
systemd-resolvedsystemd 240–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refgithub.com/systemd/systemd/commit/d973d94dec349fb676fdd844f6fe2ada3538f27crefsecurity.netapp.com/advisory/ntap-20221111-0005