CVE-2022-37451

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Source
https://cve.org/CVERecord?id=CVE-2022-37451
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-37451.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-37451
Downstream
Published
2022-08-06T17:02:11Z
Modified
2026-08-12T13:33:07.526763Z
Summary
[none]
Details

Exim before 4.96 has an invalid free in pamconverse in auths/callpam.c because storefree is not used after storemalloc.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/37xxx/CVE-2022-37451.json",
    "cna_assigner": "mitre"
}
References

Affected packages

Git / github.com/exim/exim

Affected ranges

Type
GIT
Repo
https://github.com/exim/exim
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
568dbf1701e031eb1b0cfb50d3a656477f4198c8
Fixed
51be321b27825c01829dffd90f11bfff256f7e42
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:exim:exim:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "4.96"
        }
    ]
}

Affected versions

Other
DEVEL_PDKIM_START
exim-4_50
exim-4_51
exim-4_52
exim-4_53
exim-4_54
exim-4_61
exim-4_62
exim-4_63
exim-4_64
exim-4_65
exim-4_66
exim-4_67
exim-4_68
exim-4_69
exim-4_70
exim-4_70_RC3
exim-4_70_RC4
exim-4_71
exim-4_72
exim-4_72_RC1
exim-4_72_RC2
exim-4_73
exim-4_73_RC00
exim-4_73_RC1
exim-4_74
exim-4_74_RC1
exim-4_75
exim-4_75_RC1
exim-4_75_RC2
exim-4_75_RC3
exim-4_76
exim-4_76_RC1
exim-4_76_RC2
exim-4_77
exim-4_77_RC1
exim-4_77_RC2
exim-4_77_RC3
exim-4_77_RC4
exim-4_80
exim-4_80_RC1
exim-4_80_RC2
exim-4_80_RC3
exim-4_80_RC4
exim-4_80_RC5
exim-4_80_RC6
exim-4_80_RC7
exim-4_82
exim-4_82_RC1
exim-4_82_RC2
exim-4_82_RC3
exim-4_82_RC4
exim-4_82_RC5
exim-4_83
exim-4_83_RC1
exim-4_83_RC2
exim-4_83_RC3
exim-4_84
exim-4_84_RC1
exim-4_84_RC2
exim-4_85
exim-4_85_RC1
exim-4_85_RC2
exim-4_85_RC3
exim-4_85_RC4
exim-4_86
exim-4_86_RC1
exim-4_86_RC2
exim-4_86_RC3
exim-4_86_RC4
exim-4_86_RC5
exim-4_87
exim-4_87_RC1
exim-4_87_RC2
exim-4_87_RC3
exim-4_87_RC4
exim-4_87_RC5
exim-4_87_RC6
exim-4_87_RC7
exim-4_88
exim-4_88_RC1
exim-4_88_RC2
exim-4_88_RC3
exim-4_88_RC4
exim-4_88_RC5
exim-4_88_RC6
exim-4_89_RC1
exim-4_89_RC3
exim-4_90
exim-4_90_RC1
exim-4_90_RC2
exim-4_90_RC3
exim-4_90_RC4
exim-4_91
exim-4_91_RC1
exim-4_91_RC2
exim-4_91_RC3
exim-4_91_RC4
exim-4_94_RC0
exim-4.*
exim-4.90devstart
exim-4.92
exim-4.92-RC1
exim-4.92-RC2
exim-4.92-RC3
exim-4.92-RC4
exim-4.92-RC5
exim-4.92-RC6
exim-4.92-jgh
exim-4.93
exim-4.93-RC0
exim-4.93-RC1
exim-4.93-RC2
exim-4.93-RC3
exim-4.93-RC4
exim-4.93-RC5
exim-4.93-RC6
exim-4.93-RC7
exim-4.94
exim-4.94-RC1
exim-4.94-RC2
exim-4.95
exim-4.95-RC0
exim-4.95-RC1
exim-4.95-RC2
exim-4.96-RC0
exim-4.96-RC1
exim-4.96-RC2

Database specific

vanir_signatures 
[
    {
        "id": "CVE-2022-37451-16f01ec1",
        "target": {
            "function": "pam_converse",
            "file": "src/src/auths/call_pam.c"
        },
        "deprecated": false,
        "digest": {
            "function_hash": "295946521454783503544595364697051851463",
            "length": 811.0
        },
        "signature_version": "v1",
        "source": "https://github.com/exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42",
        "signature_type": "Function"
    },
    {
        "id": "CVE-2022-37451-a9fb0373",
        "target": {
            "file": "src/src/auths/call_pam.c"
        },
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "7178427177260541947017050315255501858",
                "98985955715045176104540708459976533458",
                "135003902434850882842777734942604854167",
                "324845934968975742811553193365113630047"
            ]
        },
        "signature_version": "v1",
        "source": "https://github.com/exim/exim/commit/51be321b27825c01829dffd90f11bfff256f7e42",
        "signature_type": "Line"
    }
]
source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-37451.json"
vanir_signatures_modified 
"2026-08-12T13:33:07Z"