In the Linux kernel, the following vulnerability has been resolved:
mptcp: ensure snd_una is properly initialized on connect
This is strictly related to commit fb7a0d334894 ("mptcp: ensure snd_nxt is properly initialized on connect"). It turns out that syzkaller can trigger the retransmit after fallback and before processing any other incoming packet - so that snd_una is still left uninitialized.
Address the issue explicitly initializing snd_una together with snd_nxt and write_seq.
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 |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-zfcpdump-coreUpgrade kernel-64k-modulesUpgrade bpftoolUpgrade kernel-rt-develUpgrade kernel-rtUpgrade kernel-64k-debug-devel-matchedUpgrade kernel-rt-debug-coreUpgrade kernel-develUpgrade kernel-rt-modules-extraUpgrade kernel-64k-modules-extraUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-tools-libsUpgrade rvUpgrade kernel-64k-debug-develUpgrade kernel-64k-debug-modulesUpgrade kernel-debug-modules-extraUpgrade kernel-64k-debugUpgrade kernelUpgrade kernel-debug-modulesUpgrade kernel-64k-debug-modules-coreUpgrade kernel-rt-kvmUpgrade kernel-toolsUpgrade kernel-64k-debug-coreUpgrade kernel-cross-headersUpgrade kernel-rt-debugUpgrade kernel-tools-libs-develUpgrade kernel-64kUpgrade kernel-debug-uki-virtUpgrade kernel-debug-modules-coreUpgrade kernel-rt-debug-modules-coreUpgrade kernel-uki-virtUpgrade rtlaUpgrade kernel-64k-debug-modules-extraUpgrade kernel-rt-modules-coreUpgrade kernel-64k-develUpgrade kernel-zfcpdump-develUpgrade kernel-64k-coreUpgrade kernel-debug-develUpgrade kernel-debug-devel-matchedUpgrade kernel-zfcpdump-modulesUpgrade kernel-64k-devel-matchedUpgrade kernel-zfcpdumpUpgrade kernel-coreUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-rt-modulesUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-debugUpgrade kernel-rt-debug-develUpgrade kernel-modules-extraUpgrade kernel-modulesUpgrade kernel-rt-debug-kvmUpgrade kernel-debug-coreUpgrade kernel-abi-stablelistsUpgrade kernel-docUpgrade python3-perfUpgrade kernel-devel-matchedUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debug-modulesUpgrade perfUpgrade libperfUpgrade kernel-headersUpgrade kernel-rt-coreUpgrade kernel-modules-coreUpgrade kernel-64k-modules-core | Sep 26, 2024 | Jul 12, 2024 |
| Amazon Linux Ami 2 | — | Upgrade perfUpgrade kernel-develUpgrade bpftoolUpgrade kernel-debuginfoUpgrade kernel-livepatch-5.10.223-211.872Upgrade kernel-tools-debuginfoUpgrade kernel-headersUpgrade perf-debuginfoUpgrade kernelUpgrade kernel-tools-develUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-livepatch-5.15.162-107.160Upgrade python-perf-debuginfoUpgrade bpftool-debuginfoUpgrade python-perfUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-modules-extra-commonUpgrade kernel-toolsUpgrade perf-debuginfoUpgrade kernel-libbpf-staticUpgrade kernel-libbpf-develUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-libbpfUpgrade bpftool-debuginfoUpgrade bpftoolUpgrade kernel-livepatch-6.1.96-102.177Upgrade kernel-debuginfo-common-aarch64Upgrade kernel-tools-debuginfoUpgrade kernel-tools-develUpgrade kernel-debuginfoUpgrade kernel-develUpgrade perfUpgrade python3-perf-debuginfoUpgrade kernel-modules-extraUpgrade kernel-headersUpgrade python3-perfUpgrade kernel | Oct 16, 2025 | Jul 12, 2024 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Jul 17, 2024 | Jul 12, 2024 |
| Oracle_linux | — | Upgrade kernelUpgrade kernel-uek | Oct 16, 2024 | Jul 12, 2024 |
| Redhat_linux | — | Upgrade kernel-rtUpgrade kernelNo solution exists | Sep 25, 2024 | Jul 12, 2024 |
| Rocky_linux | — | Upgrade kernel-debug-modules-coreUpgrade rtlaUpgrade kernel-modulesUpgrade perfUpgrade python3-perf-debuginfoUpgrade kernel-headersUpgrade kernel-tools-debuginfoUpgrade perf-debuginfoUpgrade kernel-debuginfoUpgrade kernel-rt-debug-kvmUpgrade kernel-coreUpgrade kernel-cross-headersUpgrade kernel-modules-coreUpgrade kernel-rt-debug-modulesUpgrade kernel-tools-libsUpgrade kernel-modules-extraUpgrade kernel-debug-coreUpgrade kernel-uki-virtUpgrade kernel-debug-develUpgrade kernel-develUpgrade kernel-rt-debug-debuginfoUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-zfcpdumpUpgrade kernel-rt-debug-develUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debuginfo-common-x86_64Upgrade kernel-rt-coreUpgrade kernel-rt-debugUpgrade kernel-debug-uki-virtUpgrade kernelUpgrade python3-perfUpgrade kernel-debugUpgrade kernel-rt-develUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-rt-modules-extraUpgrade libperf-debuginfoUpgrade kernel-rtUpgrade kernel-debug-debuginfoUpgrade kernel-rt-debug-modules-coreUpgrade kernel-debug-modulesUpgrade rvUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-rt-modulesUpgrade kernel-zfcpdump-coreUpgrade kernel-zfcpdump-modulesUpgrade kernel-devel-matchedUpgrade kernel-zfcpdump-develUpgrade kernel-rt-debug-coreUpgrade bpftoolUpgrade kernel-debug-modules-extraUpgrade bpftool-debuginfoUpgrade libperfUpgrade kernel-toolsUpgrade kernel-tools-libs-develUpgrade kernel-rt-modules-coreUpgrade kernel-debug-devel-matchedUpgrade kernel-rt-kvmUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-rt-debuginfo | Oct 2, 2024 | Jul 12, 2024 |
| Suse | — | Upgrade reiserfs-kmp-azureUpgrade reiserfs-kmp-rtUpgrade kselftests-kmp-rtUpgrade dtb-socionextUpgrade kernel-debug-develUpgrade kernel-syms-rtUpgrade kernel-obs-buildUpgrade kernel-obs-qaUpgrade kernel-defaultUpgrade kernel-rt-livepatch-develUpgrade dtb-sprdUpgrade cluster-md-kmp-64kbUpgrade kernel-devel-rtUpgrade kernel-azure-vdsoUpgrade dtb-apmUpgrade dtb-armUpgrade dtb-nvidiaUpgrade kernel-debug-livepatch-develUpgrade kernel-macrosUpgrade kernel-rt_debugUpgrade cluster-md-kmp-defaultUpgrade kernel-rt_debug-livepatch-develUpgrade kernel-rt-develUpgrade dlm-kmp-rtUpgrade kselftests-kmp-defaultUpgrade kernel-docsUpgrade kernel-rt_debug-vdsoUpgrade dlm-kmp-defaultUpgrade kernel-default-livepatch-develUpgrade reiserfs-kmp-defaultUpgrade dtb-rockchipUpgrade kernel-rt-extraUpgrade kernel-symsUpgrade kernel-64kb-extraUpgrade kernel-default-baseUpgrade dlm-kmp-azureUpgrade kernel-default-base-rebuildUpgrade dtb-amlogicUpgrade dtb-mediatekUpgrade kernel-64kb-develUpgrade kernel-default-extraUpgrade dtb-renesasUpgrade dtb-amdUpgrade kernel-rtUpgrade kernel-default-vdsoUpgrade kernel-azure-optionalUpgrade kernel-devel-azureUpgrade dlm-kmp-64kbUpgrade kernel-rt_debug-develUpgrade kernel-azureUpgrade kernel-debugUpgrade kernel-64kbUpgrade dtb-allwinnerUpgrade kernel-azure-extraUpgrade kernel-rt-optionalUpgrade kernel-default-livepatchUpgrade cluster-md-kmp-rtUpgrade kernel-kvmsmallUpgrade kernel-kvmsmall-vdsoUpgrade ocfs2-kmp-rtUpgrade kernel-rt-livepatchUpgrade kernel-kvmsmall-develUpgrade gfs2-kmp-rtUpgrade dtb-lgUpgrade dtb-broadcomUpgrade dtb-freescaleUpgrade gfs2-kmp-64kbUpgrade dtb-amazonUpgrade kernel-source-rtUpgrade gfs2-kmp-defaultUpgrade kernel-default-develUpgrade dtb-exynosUpgrade dtb-alteraUpgrade reiserfs-kmp-64kbUpgrade kernel-syms-azureUpgrade kernel-source-vanillaUpgrade cluster-md-kmp-azureUpgrade dtb-hisiliconUpgrade dtb-caviumUpgrade kernel-default-optionalUpgrade ocfs2-kmp-azureUpgrade kernel-develUpgrade kernel-azure-develUpgrade dtb-marvellUpgrade kernel-64kb-livepatch-develUpgrade kernel-azure-livepatch-develUpgrade gfs2-kmp-azureUpgrade kernel-debug-vdsoUpgrade dtb-appleUpgrade ocfs2-kmp-defaultUpgrade kernel-zfcpdumpUpgrade kernel-source-azureUpgrade kernel-kvmsmall-livepatch-develUpgrade ocfs2-kmp-64kbUpgrade kselftests-kmp-azureUpgrade kselftests-kmp-64kbUpgrade kernel-sourceUpgrade kernel-rt-vdsoUpgrade kernel-64kb-optionalUpgrade kernel-docs-htmlUpgrade dtb-xilinxUpgrade dtb-qcom | Aug 8, 2024 | Jul 12, 2024 |
| Ubuntu | — | Upgrade linux-image-5.15.0-121-generic-lpaeUpgrade linux-image-6.8.0-44-genericUpgrade linux-image-5.15.0-121-genericUpgrade linux-image-5.15.0-1068-gcpUpgrade linux-image-6.8.0-44-lowlatencyUpgrade linux-image-nvidiaUpgrade linux-image-lowlatencyUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-5.15.0-1066-gkeUpgrade linux-image-kvmUpgrade linux-image-6.8.0-45-genericUpgrade linux-image-oem-20.04bUpgrade linux-image-oracleUpgrade linux-image-gke-5.15Upgrade linux-image-6.8.0-1010-gkeUpgrade linux-image-azure-fdeUpgrade linux-image-5.15.0-1062-ibmUpgrade linux-image-6.8.0-45-generic-64kUpgrade linux-image-6.8.0-1013-nvidia-lowlatency-64kUpgrade linux-image-5.15.0-1067-oracleUpgrade linux-image-oem-22.04bUpgrade linux-image-ibm-lts-24.04Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-awsUpgrade linux-image-oem-20.04cUpgrade linux-image-generic-64kUpgrade linux-image-6.8.0-44-generic-64kUpgrade linux-image-5.15.0-1064-nvidiaUpgrade linux-image-6.8.0-1012-oracle-64kUpgrade linux-image-6.8.0-1014-azureUpgrade linux-image-generic-lpaeUpgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-generic-hwe-24.04Upgrade linux-image-ibmUpgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-virtualUpgrade linux-image-virtual-hwe-22.04Upgrade linux-image-nvidia-64kUpgrade linux-image-6.8.0-1012-oemUpgrade linux-image-5.15.0-1052-gkeopUpgrade linux-image-oem-20.04dUpgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-oem-22.04aUpgrade linux-image-5.15.0-121-lowlatencyUpgrade linux-image-aws-lts-22.04Upgrade linux-image-ibm-classicUpgrade linux-image-6.8.0-1013-nvidia-64kUpgrade linux-image-gcpUpgrade linux-image-oracle-64kUpgrade linux-image-azure-fde-lts-22.04Upgrade linux-image-intel-iotgUpgrade linux-image-nvidia-lowlatencyUpgrade linux-image-genericUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-oem-20.04Upgrade linux-image-6.8.0-1013-nvidia-lowlatencyUpgrade linux-image-gkeopUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-6.8.0-1015-awsUpgrade linux-image-gkeop-5.15Upgrade linux-image-gkeUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-6.8.0-1013-nvidiaUpgrade linux-image-raspiUpgrade linux-image-5.15.0-1066-kvmUpgrade linux-image-nvidia-6.8Upgrade linux-image-5.15.0-1072-azureUpgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-5.15.0-1035-xilinx-zynqmpUpgrade linux-image-5.15.0-121-lowlatency-64kUpgrade linux-image-6.8.0-1012-oracleUpgrade linux-image-5.15.0-1069-awsUpgrade linux-image-6.8.0-1012-ibmUpgrade linux-image-6.8.0-1011-raspiUpgrade linux-image-6.8.0-44-lowlatency-64kUpgrade linux-image-azureUpgrade linux-image-azure-lts-22.04Upgrade linux-image-generic-hwe-20.04Upgrade linux-image-intelUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-oem-22.04cUpgrade linux-image-5.15.0-1062-raspiUpgrade linux-image-raspi-nolpaeUpgrade linux-image-lowlatency-64kUpgrade linux-image-6.8.0-1014-azure-fdeUpgrade linux-image-5.15.0-1072-azure-fdeUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-oem-22.04Upgrade linux-image-5.15.0-1064-nvidia-lowlatencyUpgrade linux-image-5.15.0-1064-intel-iotgUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-azure-cvmUpgrade linux-image-5.15.0-121-generic-64kUpgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-oem-22.04dUpgrade linux-image-6.8.0-1014-gcp | Sep 12, 2024 | Jul 12, 2024 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2025 | Jul 12, 2024 |
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