GHSA-7HRQ-P9P5-9FJX
Vulnerability from github – Published: 2024-10-21 21:30 – Updated: 2024-11-07 21:31In the Linux kernel, the following vulnerability has been resolved:
mac802154: Fix potential RCU dereference issue in mac802154_scan_worker
In the mac802154_scan_worker function, the scan_req->type field was
accessed after the RCU read-side critical section was unlocked. According
to RCU usage rules, this is illegal and can lead to unpredictable
behavior, such as accessing memory that has been updated or causing
use-after-free issues.
This possible bug was identified using a static analysis tool developed by myself, specifically designed to detect RCU-related issues.
To address this, the scan_req->type value is now stored in a local
variable scan_req_type while still within the RCU read-side critical
section. The scan_req_type is then used after the RCU lock is released,
ensuring that the type value is safely accessed without violating RCU
rules.
{
"affected": [],
"aliases": [
"CVE-2024-50005"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-21T19:15:04Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmac802154: Fix potential RCU dereference issue in mac802154_scan_worker\n\nIn the `mac802154_scan_worker` function, the `scan_req-\u003etype` field was\naccessed after the RCU read-side critical section was unlocked. According\nto RCU usage rules, this is illegal and can lead to unpredictable\nbehavior, such as accessing memory that has been updated or causing\nuse-after-free issues.\n\nThis possible bug was identified using a static analysis tool developed\nby myself, specifically designed to detect RCU-related issues.\n\nTo address this, the `scan_req-\u003etype` value is now stored in a local\nvariable `scan_req_type` while still within the RCU read-side critical\nsection. The `scan_req_type` is then used after the RCU lock is released,\nensuring that the type value is safely accessed without violating RCU\nrules.",
"id": "GHSA-7hrq-p9p5-9fjx",
"modified": "2024-11-07T21:31:38Z",
"published": "2024-10-21T21:30:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-50005"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/540138377b22f601f06f55ebfa3ca171dcab471a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/bff1709b3980bd7f80be6786f64cc9a9ee9e56da"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d18f669461811dfe2915d5554ab2a9834f810013"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e676e4ea76bbe7f1156d8c326b9b6753849481c2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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