In the Linux kernel, the following vulnerability has been resolved:
PCI: endpoint: Avoid creating sub-groups asynchronously
The asynchronous creation of sub-groups by a delayed work could lead to a NULL pointer dereference when the driver directory is removed before the work completes.
The crash can be easily reproduced with the following commands:
# cd /sys/kernel/config/pci_ep/functions/pci_epf_test # for i in {1..20}; do mkdir test && rmdir test; done
BUG: kernel NULL pointer dereference, address: 0000000000000088 ... Call Trace: configfs_register_group+0x3d/0x190 pci_epf_cfs_work+0x41/0x110 process_one_work+0x18f/0x350 worker_thread+0x25a/0x3a0
Fix this issue by using configfs_add_default_group() API which does not have the deadlock problem as configfs_register_group() and does not require the delayed work handler.
[mani: slightly reworded the description and added stable list]
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_2023 | — | Upgrade perfUpgrade kernel-libbpf-develUpgrade kernel-modules-extra-commonUpgrade kernel-libbpf-debuginfoUpgrade kernel-livepatch-6.1.164-196.303Upgrade kernel-headersUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade kernel-toolsUpgrade kernel-modules-extraUpgrade kernel-debuginfoUpgrade python3-perfUpgrade kernel-debuginfo-common-aarch64Upgrade python3-perf-debuginfoUpgrade kernel-libbpf-staticUpgrade bpftoolUpgrade kernel-libbpfUpgrade kernel-tools-develUpgrade bpftool-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-devel | Mar 27, 2026 | Feb 18, 2026 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Mar 16, 2026 | Mar 16, 2026 |
| Oracle_linux | — | Upgrade kernel-uek | Mar 25, 2026 | Feb 18, 2026 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1060-raspiUpgrade linux-image-6.8.0-1032-xilinxUpgrade linux-image-6.8.0-134-lowlatencyUpgrade linux-image-aws-lts-24.04Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-6.8.0-1058-nvidia-lowlatency-64kUpgrade linux-image-6.8.0-1060-ibmUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-realtime-6.8.1Upgrade linux-image-aws-lts-22.04Upgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-oem-22.04aUpgrade linux-image-oem-22.04bUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-generic-64k-5.15Upgrade linux-image-kvmUpgrade linux-image-aws-fips-5.15Upgrade linux-image-gkeop-6.8Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-laptop-23.10Upgrade linux-image-virtual-5.15Upgrade linux-image-5.15.0-1104-kvmUpgrade linux-image-oracle-64k-6.8Upgrade linux-image-5.15.0-186-generic-64kUpgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-6.8.0-1060-aws-64kUpgrade linux-image-6.8.0-134-genericUpgrade linux-image-azure-cvmUpgrade linux-image-5.15.0-1112-awsUpgrade linux-image-5.15.0-184-lowlatencyUpgrade linux-image-5.15.0-1111-realtimeUpgrade linux-image-gcp-64kUpgrade linux-image-raspiUpgrade linux-image-gcp-6.8Upgrade linux-image-5.15.0-1106-ibmUpgrade linux-image-generic-5.15Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-6.8.0-1058-nvidia-lowlatencyUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-gcp-fipsUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-5.15.0-1117-azureUpgrade linux-image-6.8.0-1057-oracleUpgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-ibm-5.15Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-gke-5.15Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-gcp-5.15Upgrade linux-image-aws-6.8Upgrade linux-image-gcp-lts-22.04Upgrade linux-image-gke-64kUpgrade linux-image-ibmUpgrade linux-image-azure-fdeUpgrade linux-image-azure-fipsUpgrade linux-image-6.8.0-1062-azure-fipsUpgrade linux-image-5.15.0-1104-intel-iot-realtimeUpgrade linux-image-lowlatency-6.8Upgrade linux-image-azure-fde-5.15Upgrade linux-image-generic-64k-6.8Upgrade linux-image-azure-lts-24.04Upgrade linux-image-ibm-classicUpgrade linux-image-nvidia-6.8Upgrade linux-image-oracleUpgrade linux-image-6.8.0-1058-gkeUpgrade linux-image-5.15.0-1108-gkeUpgrade linux-image-5.15.0-1107-nvidia-lowlatencyUpgrade linux-image-6.8.0-1062-azure-fdeUpgrade linux-image-aws-64k-5.15Upgrade linux-image-6.8.0-134-fipsUpgrade linux-image-aws-fipsUpgrade linux-image-azureUpgrade linux-image-azure-fde-lts-24.04Upgrade linux-image-aws-fips-6.8Upgrade linux-image-5.15.0-1095-gkeopUpgrade linux-image-generic-6.8Upgrade linux-image-ibm-6.8Upgrade linux-image-gcp-lts-24.04Upgrade linux-image-aws-64k-6.8Upgrade linux-image-6.8.0-1063-gcp-64kUpgrade linux-image-5.15.0-186-genericUpgrade linux-image-6.8.0-1063-gcpUpgrade linux-image-raspi-6.8Upgrade linux-image-raspi-nolpaeUpgrade linux-image-awsUpgrade linux-image-fipsUpgrade linux-image-6.8.0-1058-nvidia-64kUpgrade linux-image-5.15.0-1117-azure-fipsUpgrade linux-image-virtual-6.8Upgrade linux-image-xilinx-6.8Upgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-oracle-5.15Upgrade linux-image-nvidia-64kUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-5.15.0-1109-oracleUpgrade linux-image-5.15.0-1106-raspiUpgrade linux-image-intel-iotgUpgrade linux-image-5.15.0-1117-azure-fdeUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-6.8.0-134-generic-64kUpgrade linux-image-oem-20.04Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-raspi-realtimeUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-nvidiaUpgrade linux-image-oem-20.04cUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-lowlatencyUpgrade linux-image-kvm-5.15Upgrade linux-image-generic-lpaeUpgrade linux-image-6.8.0-1060-awsUpgrade linux-image-6.8.0-136-genericUpgrade linux-image-6.8.0-1057-oracle-64kUpgrade linux-image-5.15.0-1112-gcp-fipsUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-oem-22.04dUpgrade linux-image-generic-64kUpgrade linux-image-genericUpgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-azure-fips-5.15Upgrade linux-image-6.8.0-1045-gkeopUpgrade linux-image-5.15.0-186-generic-lpaeUpgrade linux-image-oracle-lts-22.04Upgrade linux-image-intelUpgrade linux-image-gkeop-5.15Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-aws-5.15Upgrade linux-image-6.8.0-2049-raspi-realtimeUpgrade linux-image-6.8.0-1063-gcp-fipsUpgrade linux-image-6.8.0-1060-aws-fipsUpgrade linux-image-5.15.0-184-lowlatency-64kUpgrade linux-image-gcpUpgrade linux-image-azure-fde-6.8Upgrade linux-image-azure-5.15Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-oracle-64kUpgrade linux-image-azure-lts-22.04Upgrade linux-image-5.15.0-1075-xilinx-zynqmpUpgrade linux-image-xilinxUpgrade linux-image-realtime-5.15Upgrade linux-image-nvidia-5.15Upgrade linux-image-gke-6.8Upgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-realtimeUpgrade linux-image-5.15.0-1112-gcpUpgrade linux-image-virtualUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-aws-64kUpgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-6.8.0-1063-azureUpgrade linux-image-6.8.0-1058-gke-64kUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-oem-22.04cUpgrade linux-image-lowlatency-5.15Upgrade linux-image-gke-64k-6.8Upgrade linux-image-gkeUpgrade linux-image-fips-6.8Upgrade linux-image-azure-fips-6.8Upgrade linux-image-lowlatency-64kUpgrade linux-image-azure-6.8Upgrade linux-image-6.8.1-1055-realtimeUpgrade linux-image-gkeopUpgrade linux-image-5.15.0-186-fipsUpgrade linux-image-5.15.0-1107-nvidiaUpgrade linux-image-5.15.0-1107-intel-iotgUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-raspi-5.15Upgrade linux-image-5.15.0-1112-aws-fipsUpgrade linux-image-oracle-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-oem-20.04bUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-fips-5.15Upgrade linux-image-6.8.0-134-lowlatency-64kUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-virtual-hwe-20.04Upgrade linux-image-oem-20.04dUpgrade linux-image-gcp-64k-6.8Upgrade linux-image-6.8.0-136-generic-64kUpgrade linux-image-6.8.0-1058-nvidiaUpgrade linux-image-5.15.0-1112-aws-64k | Jul 2, 2026 | Jul 1, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 27, 2026 | Feb 18, 2026 |
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