CVE-2022-2526

A use-after-free vulnerability was found in systemd. This issue occurs due to the onstreamio() function and dnsstreamcomplete() 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.

Database specific

{
    "cna_assigner": "redhat",
    "cwe_ids": [
        "CWE-416"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/2xxx/CVE-2022-2526.json"
}

References

Affected packages

Git / github.com/systemd/systemd

Affected ranges

Type

GIT

Repo

https://github.com/systemd/systemd

Events

Introduced

1742aae2aa8cd33897250d6fcfbe10928e43eb2f

Fixed

d973d94dec349fb676fdd844f6fe2ada3538f27c

Database specific

{
    "source": [
        "CPE_STRING",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:systemd_project:systemd:240:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "240"
        },
        {
            "last_affected": "240"
        }
    ]
}

Type

GIT

Repo

https://github.com/systemd/systemd-stable

Events

Introduced

1742aae2aa8cd33897250d6fcfbe10928e43eb2f

Last affected

1742aae2aa8cd33897250d6fcfbe10928e43eb2f

Database specific

{
    "source": "CPE_STRING",
    "cpe": "cpe:2.3:a:systemd_project:systemd:240:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "240"
        },
        {
            "last_affected": "240"
        }
    ]
}

Affected versions

Other

240

systemd 240

v240

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-2526.json"