GHSA-2FJW-WHXM-9V4Q
Vulnerability from github – Published: 2025-11-25 23:18 – Updated: 2025-12-01 16:04A heap-buffer-overflow vulnerability exists in the Rust wrapper for libnftnl, triggered via the nftnl::Batch::with_page_size constructor. When a small or malformed page size is provided, the underlying C code allocates an insufficient buffer, leading to out-of-bounds writes during batch initialization.
The flaw was fixed in commit 94a286f by adding an overflow check:
batch_page_size
.checked_add(crate::nft_nlmsg_maxsize())
.expect("batch_page_size is too large and would overflow");
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 0.8.0"
},
"package": {
"ecosystem": "crates.io",
"name": "nftnl"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-122"
],
"github_reviewed": true,
"github_reviewed_at": "2025-11-25T23:18:37Z",
"nvd_published_at": null,
"severity": "CRITICAL"
},
"details": "A heap-buffer-overflow vulnerability exists in the Rust wrapper for libnftnl, triggered via the nftnl::Batch::with_page_size constructor. When a small or malformed page size is provided, the underlying C code allocates an insufficient buffer, leading to out-of-bounds writes during batch initialization.\n\nThe flaw was fixed in commit 94a286f by adding an overflow check:\n```Rust\nbatch_page_size\n .checked_add(crate::nft_nlmsg_maxsize())\n .expect(\"batch_page_size is too large and would overflow\");\n```",
"id": "GHSA-2fjw-whxm-9v4q",
"modified": "2025-12-01T16:04:47Z",
"published": "2025-11-25T23:18:37Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/mullvad/nftnl-rs/issues/76#issue-3528876468"
},
{
"type": "WEB",
"url": "https://github.com/mullvad/nftnl-rs/commit/94a286f87e88f431913d19668246de9006790125"
},
{
"type": "PACKAGE",
"url": "https://github.com/mullvad/nftnl-rs"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2025-0126.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:L/SA:N",
"type": "CVSS_V4"
}
],
"summary": "libnftnl has Heap-based Buffer Overflow in nftnl::Batch::with_page_size (nftnl-rs)"
}
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