GHSA-MJW3-RR6R-W9H2
Vulnerability from github – Published: 2025-12-24 15:30 – Updated: 2026-07-30 06:32In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Fix improper freeing of purex item
In qla2xxx_process_purls_iocb(), an item is allocated via qla27xx_copy_multiple_pkt(), which internally calls qla24xx_alloc_purex_item().
The qla24xx_alloc_purex_item() function may return a pre-allocated item from a per-adapter pool for small allocations, instead of dynamically allocating memory with kzalloc().
An error handling path in qla2xxx_process_purls_iocb() incorrectly uses kfree() to release the item. If the item was from the pre-allocated pool, calling kfree() on it is a bug that can lead to memory corruption.
Fix this by using the correct deallocation function, qla24xx_free_purex_item(), which properly handles both dynamically allocated and pre-allocated items.
{
"affected": [],
"aliases": [
"CVE-2025-68741"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-24T13:16:29Z",
"severity": "CRITICAL"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Fix improper freeing of purex item\n\nIn qla2xxx_process_purls_iocb(), an item is allocated via\nqla27xx_copy_multiple_pkt(), which internally calls\nqla24xx_alloc_purex_item().\n\nThe qla24xx_alloc_purex_item() function may return a pre-allocated item\nfrom a per-adapter pool for small allocations, instead of dynamically\nallocating memory with kzalloc().\n\nAn error handling path in qla2xxx_process_purls_iocb() incorrectly uses\nkfree() to release the item. If the item was from the pre-allocated\npool, calling kfree() on it is a bug that can lead to memory corruption.\n\nFix this by using the correct deallocation function,\nqla24xx_free_purex_item(), which properly handles both dynamically\nallocated and pre-allocated items.",
"id": "GHSA-mjw3-rr6r-w9h2",
"modified": "2026-07-30T06:32:26Z",
"published": "2025-12-24T15:30:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68741"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4bccd506a1f1ab01d1f45b2a3effff6bedc73cf9"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5fa1c8226b4532ad7011d295d3ab4ad45df105ae"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/78b1a242fe612a755f2158fd206ee6bb577d18ca"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8e9f0a0717ba31d5842721627ade1e62d7aec012"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cfe3e2f768d248fd3d965d561d0768a56dd0b9f8"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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