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In the Linux kernel, the following vulnerability has been resolved:
qlcnic: prevent ->dcb use-after-free on qlcnic_dcb_enable() failure
adapter->dcb would get silently freed inside qlcnic_dcb_enable() in case qlcnic_dcb_attach() would return an error, which always happens under OOM conditions. This would lead to use-after-free because both of the existing callers invoke qlcnic_dcb_get_info() on the obtained pointer, which is potentially freed at that point.
Propagate errors from qlcnic_dcb_enable(), and instead free the dcb pointer at callsite using qlcnic_dcb_free(). This also removes the now unused qlcnic_clear_dcb_ops() helper, which was a simple wrapper around kfree() also causing memory leaks for partially initialized dcb.
Found by Linux Verification Center (linuxtesting.org) with the SVACE static analysis tool.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-tools-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-headersUpgrade perf-debuginfoUpgrade perfUpgrade kernel-toolsUpgrade kernel-debuginfoUpgrade python-perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-develUpgrade python-perf-debuginfoUpgrade kernel-develUpgrade bpftoolUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.10.165-143.735Upgrade kernel | May 20, 2026 | May 20, 2026 |
| Debian | — | Upgrade linux | Sep 17, 2025 | Sep 17, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Sep 15, 2025 |
| Ubuntu | — | Upgrade linux-oracle-5.4Upgrade linux-intel-iot-realtimeUpgrade linux-nvidia-tegra-5.15Upgrade linux-iotUpgrade linux-gkeUpgrade linux-raspi-5.4Upgrade linux-awsUpgrade linux-aws-5.15Upgrade linux-lowlatency-hwe-5.15Upgrade linux-bluefieldUpgrade linuxUpgrade linux-ibm-5.4Upgrade linux-aws-5.4Upgrade linux-raspiUpgrade linux-hwe-5.15Upgrade linux-gcp-fipsUpgrade linux-xilinx-zynqmpUpgrade linux-azure-fipsUpgrade linux-gcpUpgrade linux-aws-fipsUpgrade linux-oracleUpgrade linux-gcp-4.15Upgrade linux-hwe-5.4Upgrade linux-lowlatencyUpgrade linux-nvidiaUpgrade linux-azure-5.4Upgrade linux-kvmUpgrade linux-gcp-5.15Upgrade linux-ibmUpgrade linux-azure-fdeUpgrade linux-azure-5.15Upgrade linux-hweUpgrade linux-gcp-5.4Upgrade linux-azure-4.15Upgrade linux-aws-hweUpgrade linux-intel-iotgUpgrade linux-fipsUpgrade linux-realtimeUpgrade linux-intel-iotg-5.15Upgrade linux-gkeopUpgrade linux-riscv-5.15Upgrade linux-azureUpgrade linux-oracle-5.15 | Sep 19, 2025 | Sep 16, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 15, 2025 | Sep 15, 2025 |
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