ghsa-6vr6-r6mg-9m3f
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
IB/hfi1: Correctly move list in sc_disable()
Commit 13bac861952a ("IB/hfi1: Fix abba locking issue with sc_disable()") incorrectly tries to move a list from one list head to another. The result is a kernel crash.
The crash is triggered when a link goes down and there are waiters for a send to complete. The following signature is seen:
BUG: kernel NULL pointer dereference, address: 0000000000000030 [...] Call Trace: sc_disable+0x1ba/0x240 [hfi1] pio_freeze+0x3d/0x60 [hfi1] handle_freeze+0x27/0x1b0 [hfi1] process_one_work+0x1b0/0x380 ? process_one_work+0x380/0x380 worker_thread+0x30/0x360 ? process_one_work+0x380/0x380 kthread+0xd7/0x100 ? kthread_complete_and_exit+0x20/0x20 ret_from_fork+0x1f/0x30
The fix is to use the correct call to move the list.
{
"affected": [],
"aliases": [
"CVE-2022-49931"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-05-01T15:16:19Z",
"severity": null
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nIB/hfi1: Correctly move list in sc_disable()\n\nCommit 13bac861952a (\"IB/hfi1: Fix abba locking issue with sc_disable()\")\nincorrectly tries to move a list from one list head to another. The\nresult is a kernel crash.\n\nThe crash is triggered when a link goes down and there are waiters for a\nsend to complete. The following signature is seen:\n\n BUG: kernel NULL pointer dereference, address: 0000000000000030\n [...]\n Call Trace:\n sc_disable+0x1ba/0x240 [hfi1]\n pio_freeze+0x3d/0x60 [hfi1]\n handle_freeze+0x27/0x1b0 [hfi1]\n process_one_work+0x1b0/0x380\n ? process_one_work+0x380/0x380\n worker_thread+0x30/0x360\n ? process_one_work+0x380/0x380\n kthread+0xd7/0x100\n ? kthread_complete_and_exit+0x20/0x20\n ret_from_fork+0x1f/0x30\n\nThe fix is to use the correct call to move the list.",
"id": "GHSA-6vr6-r6mg-9m3f",
"modified": "2025-05-01T15:31:53Z",
"published": "2025-05-01T15:31:53Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49931"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/1afac08b39d85437187bb2a92d89a741b1078f55"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/25760a41e3802f54aadcc31385543665ab349b8e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7c4260f8f188df32414a5ecad63e8b934c2aa3f0"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b8bcff99b07cc175a6ee12a52db51cdd2229586c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ba95409d6b580501ff6d78efd00064f7df669926"
}
],
"schema_version": "1.4.0",
"severity": []
}
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- 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.