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CVE-2026-43414: scsi: qla2xxx: Completely fix fcport double free

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-08 · updated 2026-10-30
• Weakness: CWE-415

Description

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 products

• Linux kernel: from 5.15.154 before 5.16; from 6.1.84 before 6.2; from 6.6.24 before 6.7; from 6.7.12 before 6.8; from 6.8.3 before 6.9; from 6.9.1 before 6.19.9 — fixed in 5.16, 6.2, 6.7, 6.8, 6.9, 6.19.9
• Linux: from 6.1.84 before 6.1.191; from 6.6.24 before 6.6.160; from 5.15.154 before 5.16; from 6.7.12 before 6.8; from 6.8.3 before 6.9 — fixed in 6.1.191, 6.6.160, 5.16, 6.8, 6.9

How to fix

Upgrade to a fixed version: Linux kernel 5.16, 6.2, 6.7, 6.8; Linux 6.1.191, 6.6.160, 5.16, 6.8. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/4097a2afe8acc6038b71aab825430f1403decf20
• https://git.kernel.org/stable/c/7172f41786dc08144da4627483e405de57bf8d2c
• https://git.kernel.org/stable/c/baabbd29191514391ca81594e43261bd17c6795a
• https://git.kernel.org/stable/c/bb9c7eca6f8f2e4a1cd8ba6711e7efe9044c0327
• https://git.kernel.org/stable/c/c0b7da13a04bd70ef6070bfb9ea85f582294560a
• https://git.kernel.org/stable/c/d48ea85463f5b34f7b92ea0a13eddf1ab993da7b

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