GHSA-JJG4-P57C-87J3
Vulnerability from github – Published: 2025-05-01 15:31 – Updated: 2025-05-07 15:31In the Linux kernel, the following vulnerability has been resolved:
can: dev: fix skb drop check
In commit a6d190f8c767 ("can: skb: drop tx skb if in listen only mode") the priv->ctrlmode element is read even on virtual CAN interfaces that do not create the struct can_priv at startup. This out-of-bounds read may lead to CAN frame drops for virtual CAN interfaces like vcan and vxcan.
This patch mainly reverts the original commit and adds a new helper for CAN interface drivers that provide the required information in struct can_priv.
[mkl: patch pch_can, too]
{
"affected": [],
"aliases": [
"CVE-2022-49844"
],
"database_specific": {
"cwe_ids": [
"CWE-125"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-01T15:16:07Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ncan: dev: fix skb drop check\n\nIn commit a6d190f8c767 (\"can: skb: drop tx skb if in listen only\nmode\") the priv-\u003ectrlmode element is read even on virtual CAN\ninterfaces that do not create the struct can_priv at startup. This\nout-of-bounds read may lead to CAN frame drops for virtual CAN\ninterfaces like vcan and vxcan.\n\nThis patch mainly reverts the original commit and adds a new helper\nfor CAN interface drivers that provide the required information in\nstruct can_priv.\n\n[mkl: patch pch_can, too]",
"id": "GHSA-jjg4-p57c-87j3",
"modified": "2025-05-07T15:31:24Z",
"published": "2025-05-01T15:31:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49844"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/386c49fe31ee748e053860b3bac7794a933ac9ac"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ae64438be1923e3c1102d90fd41db7afcfaf54cc"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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