GHSA-5MWV-X2QC-G5CJ
Vulnerability from github – Published: 2024-05-17 15:31 – Updated: 2024-11-06 18:31In the Linux kernel, the following vulnerability has been resolved:
nvme: fix reconnection fail due to reserved tag allocation
We found a issue on production environment while using NVMe over RDMA, admin_q reconnect failed forever while remote target and network is ok. After dig into it, we found it may caused by a ABBA deadlock due to tag allocation. In my case, the tag was hold by a keep alive request waiting inside admin_q, as we quiesced admin_q while reset ctrl, so the request maked as idle and will not process before reset success. As fabric_q shares tagset with admin_q, while reconnect remote target, we need a tag for connect command, but the only one reserved tag was held by keep alive command which waiting inside admin_q. As a result, we failed to reconnect admin_q forever. In order to fix this issue, I think we should keep two reserved tags for admin queue.
{
"affected": [],
"aliases": [
"CVE-2024-27435"
],
"database_specific": {
"cwe_ids": [
"CWE-667"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-05-17T13:15:58Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme: fix reconnection fail due to reserved tag allocation\n\nWe found a issue on production environment while using NVMe over RDMA,\nadmin_q reconnect failed forever while remote target and network is ok.\nAfter dig into it, we found it may caused by a ABBA deadlock due to tag\nallocation. In my case, the tag was hold by a keep alive request\nwaiting inside admin_q, as we quiesced admin_q while reset ctrl, so the\nrequest maked as idle and will not process before reset success. As\nfabric_q shares tagset with admin_q, while reconnect remote target, we\nneed a tag for connect command, but the only one reserved tag was held\nby keep alive command which waiting inside admin_q. As a result, we\nfailed to reconnect admin_q forever. In order to fix this issue, I\nthink we should keep two reserved tags for admin queue.",
"id": "GHSA-5mwv-x2qc-g5cj",
"modified": "2024-11-06T18:31:04Z",
"published": "2024-05-17T15:31:08Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27435"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/149afee5c7418ec5db9d7387b9c9a5c1eb7ea2a8"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/262da920896e2f2ab0e3947d9dbee0aa09045818"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6851778504cdb49431809b4ba061903d5f592c96"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/de105068fead55ed5c07ade75e9c8e7f86a00d1d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ff2f90f88d78559802466ad1c84ac5bda4416b3a"
}
],
"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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