ghsa-7rcp-78xx-6fqm
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: Fix possible deadlock in rfcomm_sk_state_change
syzbot reports a possible deadlock in rfcomm_sk_state_change [1]. While rfcomm_sock_connect acquires the sk lock and waits for the rfcomm lock, rfcomm_sock_release could have the rfcomm lock and hit a deadlock for acquiring the sk lock. Here's a simplified flow:
rfcomm_sock_connect: lock_sock(sk) rfcomm_dlc_open: rfcomm_lock()
rfcomm_sock_release: rfcomm_sock_shutdown: rfcomm_lock() __rfcomm_dlc_close: rfcomm_k_state_change: lock_sock(sk)
This patch drops the sk lock before calling rfcomm_dlc_open to avoid the possible deadlock and holds sk's reference count to prevent use-after-free after rfcomm_dlc_open completes.
{
"affected": [],
"aliases": [
"CVE-2023-53016"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-03-27T17:15:50Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: Fix possible deadlock in rfcomm_sk_state_change\n\nsyzbot reports a possible deadlock in rfcomm_sk_state_change [1].\nWhile rfcomm_sock_connect acquires the sk lock and waits for\nthe rfcomm lock, rfcomm_sock_release could have the rfcomm\nlock and hit a deadlock for acquiring the sk lock.\nHere\u0027s a simplified flow:\n\nrfcomm_sock_connect:\n lock_sock(sk)\n rfcomm_dlc_open:\n rfcomm_lock()\n\nrfcomm_sock_release:\n rfcomm_sock_shutdown:\n rfcomm_lock()\n __rfcomm_dlc_close:\n rfcomm_k_state_change:\n\t lock_sock(sk)\n\nThis patch drops the sk lock before calling rfcomm_dlc_open to\navoid the possible deadlock and holds sk\u0027s reference count to\nprevent use-after-free after rfcomm_dlc_open completes.",
"id": "GHSA-7rcp-78xx-6fqm",
"modified": "2025-04-15T21:31:29Z",
"published": "2025-03-27T18:31:28Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53016"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/17511bd84871f4a6106cb335616e086880313f3f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1d80d57ffcb55488f0ec0b77928d4f82d16b6a90"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/98aec50ff7f60cc6f2d6a4396b475c547e58b04d"
}
],
"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"
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.