PT-2022-4312 · Systemd+7 · Systemd+7

Published 2019-02-18 · Updated 2024-04-04 · CVE-2022-2526

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions systemd (affected versions not specified)

Description A use-after-free issue was found in systemd 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. This allows other functions and callbacks to dereference the DNSStream object, causing a use-after-free when the reference is still used later. The issue may be exploited by a remote attacker to execute arbitrary code or cause a denial of service.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALSA-2022:6206

ALT-PU-2019-1260

BDU:2022-05168

CESA-2022_6160

CESA-2022_6206

CVE-2022-2526

RHSA-2022:6160

RHSA-2022:6161

RHSA-2022:6162

RHSA-2022:6163

RHSA-2022:6206

RHSA-2022:6551

RHSA-2022_6160

RHSA-2022_6206

RLSA-2022:6206

USN-5583-1

USN-5583-2

Affected Products

Alt Linux

Almalinux

Centos

Red Hat

Red Os

Rocky Linux

Ubuntu

Systemd

References · 37

• https://github.com/systemd/systemd/commit/d973d94dec349fb676fdd844f6fe2ada3538f27c · Patch
• https://safe-surf.ru/specialists/bulletins-nkcki/685841 · Security Note
• https://errata.almalinux.org/8/ALSA-2022-6206.html · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2022-6206.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-2526 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-2526 · Security Note
• https://osv.dev/vulnerability/USN-5583-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-2526 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2022:6206 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-2526 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-2526 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-2526 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2022-6160.html · Vendor Advisory
• http://repo.red-soft.ru/redos/7.3c/x86_64/updates · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-2526 · Vendor Advisory