scsi: qla2xxx: Completely fix fcport double free
Affects Linux kernel releases in several stable branches, such as 6.1.84 up to 6.1.191, that use the qla2xxx SCSI driver. Fixed in 6.1.191, 6.6.160, and later stable releases in each branch.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Unclear
- Fix
- Fixed in 6.1.191, 6.6.160, 5.16, 6.8, 6.9, and 3 more
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: total
Summary
The Linux kernel's SCSI driver for QLogic Fibre Channel host adapters (qla2xxx) is affected, where a port structure could be freed twice during an error path in ELS command handling. The result is memory corruption that can lead to a crash or instability of the system.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original 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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From 6.1.84 · fixed in 6.1.191; From 6.6.24 · fixed in 6.6.160; From 5.15.154 · fixed in 5.16; From 6.7.12 · fixed in 6.8; From 6.8.3 · fixed in 6.9
- Linux Linux
6.9
- KernelLinux
fixed in 6.6.160; From 6.7.0 · fixed in 6.12.114; From 6.9.0 · fixed in 6.18.57; From 6.13.0 · fixed in 6.19.9
References 6
git.kernel.org
Questions about CVE-2026-43414
What does this mean?
The qla2xxx SCSI driver can free an fcport structure twice. The double free happens in the ELS command error path, where error handling releases the command reference.Source: git.kernel.org
Am I affected, and how do I check?
The affected range covers Linux kernel versions from 6.1.84, 6.6.24, 5.15.154, 6.7.12, and 6.8.3 up to the fixed releases listed for each branch. To check a system, run uname -r to see the kernel version and lsmod | grep qla2xxx to see whether the qla2xxx driver is loaded.Source: git.kernel.org
What should I do about it?
Upgrade to a kernel release that includes the fix, such as 6.1.191, 6.6.160, 6.12.114, 6.18.57, or 6.19.9, depending on your branch. Use the stable release for your series where one is listed.Source: git.kernel.org
Is it being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data