GHSA-FFQX-HMW2-P5JV
Vulnerability from github – Published: 2024-03-06 09:30 – Updated: 2025-02-14 18:30In the Linux kernel, the following vulnerability has been resolved:
sysctl: Fix out of bounds access for empty sysctl registers
When registering tables to the sysctl subsystem there is a check to see if header is a permanently empty directory (used for mounts). This check evaluates the first element of the ctl_table. This results in an out of bounds evaluation when registering empty directories.
The function register_sysctl_mount_point now passes a ctl_table of size 1 instead of size 0. It now relies solely on the type to identify a permanently empty register.
Make sure that the ctl_table has at least one element before testing for permanent emptiness.
{
"affected": [],
"aliases": [
"CVE-2023-52596"
],
"database_specific": {
"cwe_ids": [
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-03-06T07:15:09Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nsysctl: Fix out of bounds access for empty sysctl registers\n\nWhen registering tables to the sysctl subsystem there is a check to see\nif header is a permanently empty directory (used for mounts). This check\nevaluates the first element of the ctl_table. This results in an out of\nbounds evaluation when registering empty directories.\n\nThe function register_sysctl_mount_point now passes a ctl_table of size\n1 instead of size 0. It now relies solely on the type to identify\na permanently empty register.\n\nMake sure that the ctl_table has at least one element before testing for\npermanent emptiness.",
"id": "GHSA-ffqx-hmw2-p5jv",
"modified": "2025-02-14T18:30:45Z",
"published": "2024-03-06T09:30:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-52596"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/15893975e9e382f8294ea8d926f08dc2d8d39ede"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2ae7081bc10123b187e36a4f3a8e53768de31489"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/315552310c7de92baea4e570967066569937a843"
}
],
"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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