CVE-2025-34457

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Source
https://cve.org/CVERecord?id=CVE-2025-34457
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-34457.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-34457
Downstream
Published
2025-12-22T21:30:29.670Z
Modified
2026-08-12T03:51:27.422929255Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
wb2osz/direwolf <= 1.8.1 Stack-based Buffer Overflow DoS
Details

wb2osz/direwolf (Dire Wolf) versions up to and including 1.8, prior to commit 694c954, contain a stack-based buffer overflow vulnerability in the function kissrecbyte() located in src/kissframe.c. When processing crafted KISS frames that reach the maximum allowed frame length (MAXKISSLEN), the function appends a terminating FEND byte without reserving sufficient space in the stack buffer. This results in an out-of-bounds write followed by an out-of-bounds read during the subsequent call to kissunwrap(), leading to stack memory corruption or application crashes. This vulnerability may allow remote unauthenticated attackers to trigger a denial-of-service condition.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-121"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/34xxx/CVE-2025-34457.json"
}
References

Affected packages

Git / github.com/wb2osz/direwolf

Affected ranges

Type
GIT
Repo
https://github.com/wb2osz/direwolf
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
694c954
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.8.1"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-34457.json"