GHSA-2QJ8-C2V4-6CG6
Vulnerability from github – Published: 2025-02-27 03:34 – Updated: 2025-10-01 21:31In the Linux kernel, the following vulnerability has been resolved:
net: ethernet: ti: am65-cpsw: fix memleak in certain XDP cases
If the XDP program doesn't result in XDP_PASS then we leak the memory allocated by am65_cpsw_build_skb().
It is pointless to allocate SKB memory before running the XDP program as we would be wasting CPU cycles for cases other than XDP_PASS. Move the SKB allocation after evaluating the XDP program result.
This fixes the memleak. A performance boost is seen for XDP_DROP test.
XDP_DROP test: Before: 460256 rx/s 0 err/s After: 784130 rx/s 0 err/s
{
"affected": [],
"aliases": [
"CVE-2025-21788"
],
"database_specific": {
"cwe_ids": [
"CWE-401"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-27T03:15:19Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: ti: am65-cpsw: fix memleak in certain XDP cases\n\nIf the XDP program doesn\u0027t result in XDP_PASS then we leak the\nmemory allocated by am65_cpsw_build_skb().\n\nIt is pointless to allocate SKB memory before running the XDP\nprogram as we would be wasting CPU cycles for cases other than XDP_PASS.\nMove the SKB allocation after evaluating the XDP program result.\n\nThis fixes the memleak. A performance boost is seen for XDP_DROP test.\n\nXDP_DROP test:\nBefore: 460256 rx/s 0 err/s\nAfter: 784130 rx/s 0 err/s",
"id": "GHSA-2qj8-c2v4-6cg6",
"modified": "2025-10-01T21:31:12Z",
"published": "2025-02-27T03:34:06Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21788"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1bba1d042107167164a0ae3a843fdf650ab005d7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5db843258de1e4e6b1ef1cbd1797923c9e3de548"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dc11f049612b9d926aca2e55f8dc9d82850d0da3"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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