In the Linux kernel, the following vulnerability has been resolved:
dccp: fix data-race around dp->dccps_mss_cache
dccp_sendmsg() reads dp->dccps_mss_cache before locking the socket. Same thing in do_dccp_getsockopt().
Add READ_ONCE()/WRITE_ONCE() annotations, and change dccp_sendmsg() to check again dccps_mss_cache after socket is locked.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernelUpgrade bpftool-debuginfoUpgrade kernel-livepatch-5.15.128-80.144Upgrade python-perf-debuginfoUpgrade python-perfUpgrade kernel-debuginfo-common-x86_64Upgrade perf-debuginfoUpgrade kernel-livepatch-4.14.326-245.539Upgrade kernel-headersUpgrade kernel-toolsUpgrade perfUpgrade kernel-develUpgrade bpftoolUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-debuginfoUpgrade kernel-tools-debuginfoUpgrade kernel-tools-develUpgrade kernel-livepatch-5.10.192-182.736 | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade perfUpgrade perf-debuginfoUpgrade python3-perfUpgrade kernel-libbpf-develUpgrade kernel-debuginfoUpgrade bpftool-debuginfoUpgrade kernel-livepatch-6.1.49-69.116Upgrade bpftoolUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-debuginfo-common-x86_64Upgrade kernel-libbpf-staticUpgrade kernel-headersUpgrade kernelUpgrade python3-perf-debuginfoUpgrade kernel-toolsUpgrade kernel-tools-debuginfoUpgrade kernel-libbpfUpgrade kernel-develUpgrade kernel-tools-devel | Jan 12, 2026 | Dec 9, 2025 |
| Debian | — | Upgrade linux | Dec 10, 2025 | Dec 10, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Dec 9, 2025 |
| Ubuntu | — | Upgrade linux-gkeUpgrade linuxUpgrade linux-aws-5.4Upgrade linux-nvidia-tegra-igxUpgrade linux-awsUpgrade linux-oracle-5.4Upgrade linux-ibm-5.4Upgrade linux-gcp-5.4Upgrade linux-intel-iot-realtimeUpgrade linux-aws-5.15Upgrade linux-iotUpgrade linux-azure-fipsUpgrade linux-nvidia-tegra-5.15Upgrade linux-ibm-5.15Upgrade linux-nvidia-tegraUpgrade linux-lowlatency-hwe-5.15Upgrade linux-bluefieldUpgrade linux-nvidiaUpgrade linux-azure-5.15Upgrade linux-hwe-5.4Upgrade linux-gcp-fipsUpgrade linux-gcpUpgrade linux-azure-5.4Upgrade linux-intel-iotgUpgrade linux-gcp-5.15Upgrade linux-fipsUpgrade linux-oracleUpgrade linux-raspi-5.4Upgrade linux-ibmUpgrade linux-azureUpgrade linux-raspiUpgrade linux-realtimeUpgrade linux-riscv-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-oracle-5.15Upgrade linux-gkeopUpgrade linux-intel-iotg-5.15Upgrade linux-lowlatencyUpgrade linux-aws-fipsUpgrade linux-kvmUpgrade linux-hwe-5.15 | Dec 11, 2025 | Dec 9, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Dec 9, 2025 |
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