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Review reviewCritical

CVE-2025-68741

Linux

In 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...

CVSS
9.8
EPSS
0.37%
30.1% percentile
CISA KEV
Not listed
Published
2025.12.24
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.37%
Technical severityCVSS 9.8

Vulnerability overview

In 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...

Affected product and versions

Product
Linux
Affected versions
>= 875386b98857822b77ac7f95bdf367b70af5b78c < 4bccd506a1f1ab01d1f45b2a3effff6bedc73cf9, >= 875386b98857822b77ac7f95bdf367b70af5b78c < 8e9f0a0717ba31d5842721627ade1e62d7aec012, >= 875386b98857822b77ac7f95bdf367b70af5b78c < cfe3e2f768d248fd3d965d561d0768a56dd0b9f8, >= 875386b98857822b77ac7f95bdf367b70af5b78c < 5fa1c8226b4532ad7011d295d3ab4ad45df105ae, >= 875386b98857822b77ac7f95bdf367b70af5b78c < 78b1a242fe612a755f2158fd206ee6bb577d18ca, >= 6.6
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Not available