ghsa-84hr-q2hc-2m5c
Vulnerability from github
In the Linux kernel, the following vulnerability has been resolved:
scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI
If lpfc_issue_els_flogi() fails and returns non-zero status, the node reference count is decremented to trigger the release of the nodelist structure. However, if there is a prior registration or dev-loss-evt work pending, the node may be released prematurely. When dev-loss-evt completes, the released node is referenced causing a use-after-free null pointer dereference.
Similarly, when processing non-zero ELS PLOGI completion status in lpfc_cmpl_els_plogi(), the ndlp flags are checked for a transport registration before triggering node removal. If dev-loss-evt work is pending, the node may be released prematurely and a subsequent call to lpfc_dev_loss_tmo_handler() results in a use after free ndlp dereference.
Add test for pending dev-loss before decrementing the node reference count for FLOGI, PLOGI, PRLI, and ADISC handling.
{
"affected": [],
"aliases": [
"CVE-2022-49535"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-02-26T07:01:29Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI\n\nIf lpfc_issue_els_flogi() fails and returns non-zero status, the node\nreference count is decremented to trigger the release of the nodelist\nstructure. However, if there is a prior registration or dev-loss-evt work\npending, the node may be released prematurely. When dev-loss-evt\ncompletes, the released node is referenced causing a use-after-free null\npointer dereference.\n\nSimilarly, when processing non-zero ELS PLOGI completion status in\nlpfc_cmpl_els_plogi(), the ndlp flags are checked for a transport\nregistration before triggering node removal. If dev-loss-evt work is\npending, the node may be released prematurely and a subsequent call to\nlpfc_dev_loss_tmo_handler() results in a use after free ndlp dereference.\n\nAdd test for pending dev-loss before decrementing the node reference count\nfor FLOGI, PLOGI, PRLI, and ADISC handling.",
"id": "GHSA-84hr-q2hc-2m5c",
"modified": "2025-05-02T09:30:30Z",
"published": "2025-02-27T21:32:14Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49535"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/10663ebec0ad5c78493a0dd34c9ee4d73d7ca0df"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/577a942df3de2666f6947bdd3a5c9e8d30073424"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c7dc74ab7975c9b96284abfe4cca756d75fa4604"
}
],
"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 |
|---|
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