GHSA-HR73-XMQH-3GCC
Vulnerability from github – Published: 2024-10-21 15:32 – Updated: 2026-05-12 12:32In the Linux kernel, the following vulnerability has been resolved:
net: seeq: Fix use after free vulnerability in ether3 Driver Due to Race Condition
In the ether3_probe function, a timer is initialized with a callback function ether3_ledoff, bound to &prev(dev)->timer. Once the timer is started, there is a risk of a race condition if the module or device is removed, triggering the ether3_remove function to perform cleanup. The sequence of operations that may lead to a UAF bug is as follows:
CPU0 CPU1
| ether3_ledoff
ether3_remove | free_netdev(dev); | put_devic | kfree(dev); | | ether3_outw(priv(dev)->regs.config2 |= CFG2_CTRLO, REG_CONFIG2); | // use dev
Fix it by ensuring that the timer is canceled before proceeding with the cleanup in ether3_remove.
{
"affected": [],
"aliases": [
"CVE-2024-47747"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-21T13:15:04Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: seeq: Fix use after free vulnerability in ether3 Driver Due to Race Condition\n\nIn the ether3_probe function, a timer is initialized with a callback\nfunction ether3_ledoff, bound to \u0026prev(dev)-\u003etimer. Once the timer is\nstarted, there is a risk of a race condition if the module or device\nis removed, triggering the ether3_remove function to perform cleanup.\nThe sequence of operations that may lead to a UAF bug is as follows:\n\nCPU0 CPU1\n\n | ether3_ledoff\nether3_remove |\n free_netdev(dev); |\n put_devic |\n kfree(dev); |\n | ether3_outw(priv(dev)-\u003eregs.config2 |= CFG2_CTRLO, REG_CONFIG2);\n | // use dev\n\nFix it by ensuring that the timer is canceled before proceeding with\nthe cleanup in ether3_remove.",
"id": "GHSA-hr73-xmqh-3gcc",
"modified": "2026-05-12T12:32:10Z",
"published": "2024-10-21T15:32:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-47747"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-355557.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1c57d61a43293252ad732007c7070fdb112545fd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/25d559ed2beec9b34045886100dac46d1ad92eba"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/338a0582b28e69460df03af50e938b86b4206353"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/516dbc6d16637430808c39568cbb6b841d32b55b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/77a77331cef0a219b8dd91361435eeef04cb741c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/822c7bb1f6f8b0331e8d1927151faf8db3b33afd"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b5109b60ee4fcb2f2bb24f589575e10cc5283ad4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b5a84b6c772564c8359a9a0fbaeb2a2944aa1ee9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d2abc379071881798d20e2ac1d332ad855ae22f3"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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