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Review reviewCritical

CVE-2026-43414

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Completely fix fcport double free In qla24xx_els_dcmd_iocb() sp->free is set to qla2x00_els_dcmd_sp_free(). When an error happens, this function is called by qla2x00_sp_release(), when kref_put() releases the first and the last reference. qla2x00_els_dcmd_sp_free() frees fcport by calling qla2x00_free_fcport(). Doing it one more time after kref_put() is a bad idea.

CVSS
9.8
EPSS
0.38%
30.7% percentile
CISA KEV
Not listed
Published
2026.05.09
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.38%
Technical severityCVSS 9.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Completely fix fcport double free In qla24xx_els_dcmd_iocb() sp->free is set to qla2x00_els_dcmd_sp_free(). When an error happens, this function is called by qla2x00_sp_release(), when kref_put() releases the first and the last reference. qla2x00_els_dcmd_sp_free() frees fcport by calling qla2x00_free_fcport(). Doing it one more time after kref_put() is a bad idea.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
4895009c4bb72f71f2e682f1e7d2c2d96e482087, 7861213201838480dc222634c56fb6db113d010d, 3b9d72442adfbc9ddb0f76dd1b03977b3a578b16, ef23850940d9a52c39936d27254824ccf5e9b6bd, 6c6bf6cacf9461f8d301cfac4f9c175d80cbcc63, cd10dee1f07a782f5aa05703c55299ca86a85ee4, b03e626bd6d3f0684f56ee1890d70fc9ca991c04, 282877633b25d67021a34169c5b5519b1d4ef65e, f85af9f1aa5e2f53694a6cbe72010f754b5ff862, 9b43d2884b54d415caab48878b526dfe2ae9921b, 846fb9f112f618ec6ae181d8dae7961652574774, 5.15.154, 6.1.84, 6.6.24, 6.7.12, 6.8.3, 6.9, >= 5.15.154 < 5.16, >= 6.1.84 < 6.2, >= 6.6.24 < 6.7
Fixed versions
5.16, 6.2, 6.7, 6.8, 6.9, 6.19.9

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel 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
CWE-415