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.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernelUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-livepatch-5.10.165-143.735Upgrade bpftoolUpgrade kernel-develUpgrade kernel-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade python-perf-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-toolsUpgrade kernel-tools-develUpgrade perfUpgrade kernel-headersUpgrade bpftool-debuginfoUpgrade perf-debuginfoUpgrade python-perf | 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-hweUpgrade linux-ibmUpgrade linux-aws-fipsUpgrade linux-azure-fipsUpgrade linux-azure-5.15Upgrade linux-oracleUpgrade linux-oracle-5.15Upgrade linux-azureUpgrade linux-intel-iotg-5.15Upgrade linux-intel-iotgUpgrade linux-gcp-fipsUpgrade linux-nvidiaUpgrade linux-gcpUpgrade linux-fipsUpgrade linux-kvmUpgrade linux-xilinx-zynqmpUpgrade linux-lowlatencyUpgrade linux-hwe-5.4Upgrade linux-azure-5.4Upgrade linux-gkeopUpgrade linux-gcp-5.4Upgrade linux-riscv-5.15Upgrade linux-gcp-5.15Upgrade linux-hwe-5.15Upgrade linux-realtimeUpgrade linux-aws-hweUpgrade linux-azure-4.15Upgrade linux-gcp-4.15Upgrade linux-raspiUpgrade linux-bluefieldUpgrade linux-lowlatency-hwe-5.15Upgrade linux-nvidia-tegra-5.15Upgrade linuxUpgrade linux-aws-5.4Upgrade linux-ibm-5.4Upgrade linux-awsUpgrade linux-aws-5.15Upgrade linux-oracle-5.4Upgrade linux-intel-iot-realtimeUpgrade linux-raspi-5.4Upgrade linux-iotUpgrade linux-gke | 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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