In the Linux kernel, the following vulnerability has been resolved:
nvmet-fc: fix invalid free in LS IOD error path
nvmet_fc_alloc_ls_iodlist() advances iod while initializing the LS IOD array. If an rqstbuf allocation or response buffer DMA mapping fails, the unwind loop decrements iod past the start of the array. The final kfree(iod) therefore frees an address before the allocated object.
This can be reproduced with nvme-fcloop and failslab by setting fail-nth to 6 before creating a target port. KASAN reports:
BUG: KASAN: invalid-free in nvmet_fc_register_targetport Free of addr ffff88816cf8ff48 by task nvmet_fail_nth/9552
Free the original allocation base stored in tgtport->iod instead. With this fix applied, the same sysfs write with fail-nth=6 returns -ENOMEM without any KASAN report.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade linuxUpgrade linux-6.12 | Sep 21, 2026 | Sep 4, 2026 |
| Redhat_linux | — | No solution exists | Oct 27, 2026 | Sep 4, 2026 |
| Ubuntu | — | Upgrade linux-gkeUpgrade linux-lowlatencyUpgrade linux-bluefieldUpgrade linux-riscv-7.0Upgrade linux-lowlatency-hwe-5.15Upgrade linux-riscv-5.15Upgrade linux-azure-fdeUpgrade linux-nvidia-tegraUpgrade linux-intel-iotgUpgrade linux-nvidia-tegra-5.15Upgrade linux-oem-7.0Upgrade linux-fipsUpgrade linux-oracle-5.15Upgrade linux-realtimeUpgrade linux-riscvUpgrade linux-awsUpgrade linux-aws-5.15Upgrade linuxUpgrade linux-ibm-5.15Upgrade linux-hwe-7.0Upgrade linux-oracleUpgrade linux-aws-fipsUpgrade linux-gcp-5.15Upgrade linux-intel-iotg-5.15Upgrade linux-nvidiaUpgrade linux-azureUpgrade linux-intel-iot-realtimeUpgrade linux-kvmUpgrade linux-hwe-5.15Upgrade linux-gkeopUpgrade linux-nvidia-tegra-igxUpgrade linux-gcp-fipsUpgrade linux-azure-5.15Upgrade linux-gcpUpgrade linux-azure-fipsUpgrade linux-azure-fde-5.15Upgrade linux-ibm | Nov 3, 2026 | Sep 4, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 21, 2026 | Sep 4, 2026 |
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