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 python-perfUpgrade kernel-debuginfo-common-x86_64Upgrade perf-debuginfoUpgrade kernel-livepatch-5.15.128-80.144Upgrade python-perf-debuginfoUpgrade bpftool-debuginfoUpgrade kernelUpgrade kernel-headersUpgrade kernel-livepatch-4.14.326-245.539Upgrade kernel-tools-develUpgrade kernel-livepatch-5.10.192-182.736Upgrade kernel-develUpgrade kernel-debuginfoUpgrade perfUpgrade kernel-toolsUpgrade kernel-tools-debuginfoUpgrade bpftoolUpgrade kernel-debuginfo-common-aarch64 | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-tools-develUpgrade perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-livepatch-6.1.49-69.116Upgrade kernel-libbpf-develUpgrade kernel-develUpgrade kernel-debuginfoUpgrade kernelUpgrade perf-debuginfoUpgrade python3-perfUpgrade kernel-tools-debuginfoUpgrade kernel-libbpf-staticUpgrade python3-perf-debuginfoUpgrade bpftoolUpgrade kernel-toolsUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-headersUpgrade kernel-libbpfUpgrade bpftool-debuginfo | 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 linuxUpgrade linux-aws-5.15Upgrade linux-ibm-5.15Upgrade linux-gkeUpgrade linux-aws-5.4Upgrade linux-ibm-5.4Upgrade linux-intel-iot-realtimeUpgrade linux-azure-fipsUpgrade linux-iotUpgrade linux-nvidia-tegra-igxUpgrade linux-awsUpgrade linux-nvidia-tegra-5.15Upgrade linux-oracle-5.4Upgrade linux-nvidia-tegraUpgrade linux-gcp-5.4Upgrade linux-nvidiaUpgrade linux-intel-iotgUpgrade linux-hwe-5.15Upgrade linux-raspiUpgrade linux-lowlatency-hwe-5.15Upgrade linux-hwe-5.4Upgrade linux-bluefieldUpgrade linux-oracleUpgrade linux-lowlatencyUpgrade linux-gcpUpgrade linux-aws-fipsUpgrade linux-intel-iotg-5.15Upgrade linux-xilinx-zynqmpUpgrade linux-azureUpgrade linux-gcp-fipsUpgrade linux-azure-5.15Upgrade linux-fipsUpgrade linux-riscv-5.15Upgrade linux-gkeopUpgrade linux-oracle-5.15Upgrade linux-azure-5.4Upgrade linux-kvmUpgrade linux-realtimeUpgrade linux-raspi-5.4Upgrade linux-ibmUpgrade linux-gcp-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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