GHSA-XRHC-FGM3-X2H4
Vulnerability from github – Published: 2024-04-10 21:30 – Updated: 2024-04-19 21:31In the Linux kernel, the following vulnerability has been resolved:
scsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine
An error is detected with the following report when unloading the driver: "KASAN: use-after-free in lpfc_unreg_rpi+0x1b1b"
The NLP_REG_LOGIN_SEND nlp_flag is set in lpfc_reg_fab_ctrl_node(), but the flag is not cleared upon completion of the login.
This allows a second call to lpfc_unreg_rpi() to proceed with nlp_rpi set to LPFC_RPI_ALLOW_ERROR. This results in a use after free access when used as an rpi_ids array index.
Fix by clearing the NLP_REG_LOGIN_SEND nlp_flag in lpfc_mbx_cmpl_fc_reg_login().
{
"affected": [],
"aliases": [
"CVE-2021-47198"
],
"database_specific": {
"cwe_ids": [
"CWE-416"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-04-10T19:15:47Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: lpfc: Fix use-after-free in lpfc_unreg_rpi() routine\n\nAn error is detected with the following report when unloading the driver:\n \"KASAN: use-after-free in lpfc_unreg_rpi+0x1b1b\"\n\nThe NLP_REG_LOGIN_SEND nlp_flag is set in lpfc_reg_fab_ctrl_node(), but the\nflag is not cleared upon completion of the login.\n\nThis allows a second call to lpfc_unreg_rpi() to proceed with nlp_rpi set\nto LPFC_RPI_ALLOW_ERROR. This results in a use after free access when used\nas an rpi_ids array index.\n\nFix by clearing the NLP_REG_LOGIN_SEND nlp_flag in\nlpfc_mbx_cmpl_fc_reg_login().",
"id": "GHSA-xrhc-fgm3-x2h4",
"modified": "2024-04-19T21:31:07Z",
"published": "2024-04-10T21:30:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-47198"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/79b20beccea3a3938a8500acef4e6b9d7c66142f"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/dbebf865b3239595c1d4dba063b122862583b52a"
}
],
"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"
}
]
}
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