GHSA-JP2P-CX4H-XHW3
Vulnerability from github – Published: 2026-09-16 12:30 – Updated: 2026-09-16 15:30In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition()
In the format 1 path, the virtual port is located on ha->vp_list while holding vport_slock, but the lock is dropped before vp is used: qla_update_host_map() is called and VP_IDX_ACQUIRED/REGISTER_FC4_NEEDED/ REGISTER_FDMI_NEEDED are set on vp. No reference is taken across that window, so a concurrent qla24xx_deallocate_vp_id() can tear the vport down and free it, leading to a use-after-free.
Take a vport reference (vref_count) under vport_slock when the matching vp is found, and drop it after the last use of vp. qla24xx_deallocate_vp_id() waits for vref_count to reach zero before unlinking and freeing the vport, so the pointer stays valid. This matches the reference idiom already used by the other ha->vp_list traversals.
{
"affected": [],
"aliases": [
"CVE-2026-89861"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-16T11:16:54Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition()\n\nIn the format 1 path, the virtual port is located on ha-\u003evp_list while\nholding vport_slock, but the lock is dropped before vp is used:\nqla_update_host_map() is called and VP_IDX_ACQUIRED/REGISTER_FC4_NEEDED/\nREGISTER_FDMI_NEEDED are set on vp. No reference is taken across that\nwindow, so a concurrent qla24xx_deallocate_vp_id() can tear the vport\ndown and free it, leading to a use-after-free.\n\nTake a vport reference (vref_count) under vport_slock when the matching\nvp is found, and drop it after the last use of\nvp. qla24xx_deallocate_vp_id() waits for vref_count to reach zero before\nunlinking and freeing the vport, so the pointer stays valid. This\nmatches the reference idiom already used by the other ha-\u003evp_list\ntraversals.",
"id": "GHSA-jp2p-cx4h-xhw3",
"modified": "2026-09-16T15:30:59Z",
"published": "2026-09-16T12:30:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89861"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/267533b28ddf2c9223d30ad7e6960fa9e936428e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/47272152a13d202d98496208f9bf382c1cf4d4fb"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4b7f0a95bfeb1d3673da4c29bbe9872a61bc1a69"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/793cedee296fd819bfadc2a7ec4d52faf9c09a0a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d09ef32af1e05d79f29b460521a20bc4e6fd2ecf"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d556f899964d184e6cb788f3fa9dcddcafe1ab2d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f6b3bcc7cb2f4c37464958b9fd97dc7f185ea297"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f8d2eb510c063a8ca79a5dc766a4303d3925fe83"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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