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

What is CVE-2026-43414?

CVE-2026-43414 is a critical use after free vulnerability in Linux kernel, published on 8 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-415

Which versions are affected by CVE-2026-43414?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-43414?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2026-43414 being exploited?

There is no known exploitation of CVE-2026-43414 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-87135, BELL-CVE-2026-43414, DEBIAN-CVE-2026-43414, GHSA-qm6r-96cc-q36w, ROOT-OS-DEBIAN-12-CVE-2026-43414, ROOT-OS-DEBIAN-13-CVE-2026-43414 and 3 more.