GHSA-F37V-5R8J-33M9
Vulnerability from github – Published: 2026-04-22 15:31 – Updated: 2026-10-15 03:35In the Linux kernel, the following vulnerability has been resolved:
esp: fix skb leak with espintcp and async crypto
When the TX queue for espintcp is full, esp_output_tail_tcp will return an error and not free the skb, because with synchronous crypto, the common xfrm output code will drop the packet for us.
With async crypto (esp_output_done), we need to drop the skb when esp_output_tail_tcp returns an error.
{
"affected": [],
"aliases": [
"CVE-2026-31518"
],
"database_specific": {
"cwe_ids": [
"CWE-401"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-04-22T14:16:51Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nesp: fix skb leak with espintcp and async crypto\n\nWhen the TX queue for espintcp is full, esp_output_tail_tcp will\nreturn an error and not free the skb, because with synchronous crypto,\nthe common xfrm output code will drop the packet for us.\n\nWith async crypto (esp_output_done), we need to drop the skb when\nesp_output_tail_tcp returns an error.",
"id": "GHSA-f37v-5r8j-33m9",
"modified": "2026-10-15T03:35:39Z",
"published": "2026-04-22T15:31:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31518"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0c0eef8ccd2413b0a10eb6bbd3442333b1e64dd2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/41aafca57de4a4c026701622bd4648f112a9edcd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4820847e036ff1035b01b69ad68dfc17e7028fe9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6a3ec6efbc4f90e0ccb2e71574f07351f19996f4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6aa9841d917532d0f2d932d1ff2f3a94305aaf47"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/88d386243ed374ac969dabd3bbc1409a31d81818"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/aca3ad0c262f54a5b5c95dda80a48365997d1224"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/df6f995358dc1f3c42484f5cfe241d7bd3e1cd15"
}
],
"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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