ghsa-mxvm-x858-3gm2
Vulnerability from github
Published
2024-04-28 15:30
Modified
2024-04-28 15:30
Details
In the Linux kernel, the following vulnerability has been resolved:
s390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup
Fix Oops in dasd_alias_get_start_dev() function caused by the pavgroup pointer being NULL.
The pavgroup pointer is checked on the entrance of the function but without the lcu->lock being held. Therefore there is a race window between dasd_alias_get_start_dev() and _lcu_update() which sets pavgroup to NULL with the lcu->lock held.
Fix by checking the pavgroup pointer with lcu->lock held.
{
"affected": [],
"aliases": [
"CVE-2022-48636"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-28T13:15:06Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: fix Oops in dasd_alias_get_start_dev due to missing pavgroup\n\nFix Oops in dasd_alias_get_start_dev() function caused by the pavgroup\npointer being NULL.\n\nThe pavgroup pointer is checked on the entrance of the function but\nwithout the lcu-\u003elock being held. Therefore there is a race window\nbetween dasd_alias_get_start_dev() and _lcu_update() which sets\npavgroup to NULL with the lcu-\u003elock held.\n\nFix by checking the pavgroup pointer with lcu-\u003elock held.",
"id": "GHSA-mxvm-x858-3gm2",
"modified": "2024-04-28T15:30:29Z",
"published": "2024-04-28T15:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48636"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2e473351400e3dd66f0b71eddcef82ee45a584c1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/49f401a98b318761ca2e15d4c7869a20043fbed4"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/650a2e79d176db753654d3dde88e53a2033036ac"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/aaba5ff2742043705bc4c02fd0b2b246e2e16da1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d3a67c21b18f33c79382084af556557c442f12a6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d86b4267834e6d4af62e3073e48166e349ab1b70"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/db7ba07108a48c0f95b74fabbfd5d63e924f992d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f5fcc9d6d71d9ff7fdbdd4b89074e6e24fffc20b"
}
],
"schema_version": "1.4.0",
"severity": []
}
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