GHSA-585Q-CM62-757J
Vulnerability from github – Published: 2026-01-09 19:53 – Updated: 2026-01-09 19:53
VLAI?
Summary
mnl has segmentation fault and invalid memory read in `mnl::cb_run`
Details
The function mnl::cb_run is marked as safe but exhibits unsound behavior when processing malformed Netlink message buffers.
Passing a crafted byte slice to mnl::cb_run can trigger memory violations. The function does not sufficiently validate the input buffer structure before processing, leading to out-of-bounds reads.
This vulnerability allows an attacker to cause a Denial of Service (segmentation fault) or potentially read unmapped memory by providing a malformed Netlink message.
Severity ?
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "mnl"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "0.3.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": true,
"github_reviewed_at": "2026-01-09T19:53:23Z",
"nvd_published_at": null,
"severity": "LOW"
},
"details": "The function `mnl::cb_run` is marked as safe but exhibits unsound behavior when processing malformed Netlink message buffers.\n\nPassing a crafted byte slice to `mnl::cb_run` can trigger memory violations. The function does not sufficiently validate the input buffer structure before processing, leading to out-of-bounds reads.\n\nThis vulnerability allows an attacker to cause a Denial of Service (segmentation fault) or potentially read unmapped memory by providing a malformed Netlink message.",
"id": "GHSA-585q-cm62-757j",
"modified": "2026-01-09T19:53:23Z",
"published": "2026-01-09T19:53:23Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/mullvad/mnl-rs/issues/15"
},
{
"type": "PACKAGE",
"url": "https://github.com/mullvad/mnl-rs"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2025-0142.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
"type": "CVSS_V4"
}
],
"summary": "mnl has segmentation fault and invalid memory read in `mnl::cb_run`"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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