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In the Linux kernel, the following vulnerability has been resolved:
Revert "net/smc: Introduce TCP ULP support"
This reverts commit d7cd421da9da2cc7b4d25b8537f66db5c8331c40.
As reported by Al Viro, the TCP ULP support for SMC is fundamentally broken. The implementation attempts to convert an active TCP socket into an SMC socket by modifying the underlying `struct file`, dentry, and inode in-place, which violates core VFS invariants that assume these structures are immutable for an open file, creating a risk of use after free errors and general system instability.
Given the severity of this design flaw and the fact that cleaner alternatives (e.g., LD_PRELOAD, BPF) exist for legacy application transparency, the correct course of action is to remove this feature entirely.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-modules-coreUpgrade kernel-rt-develUpgrade kernel-uki-virt-addonsUpgrade kernel-rt-64k-debug-develUpgrade kernel-toolsUpgrade kernel-zfcpdump-modulesUpgrade kernel-64k-debug-coreUpgrade kernel-64k-modules-extraUpgrade kernel-64k-debugUpgrade kernel-rt-64k-develUpgrade kernel-abi-stablelistsUpgrade kernel-rt-64k-modules-extraUpgrade kernel-rt-64kUpgrade kernel-rtUpgrade kernel-64k-devel-matchedUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debug-coreUpgrade kernel-rt-modulesUpgrade kernel-debug-modules-extraUpgrade rvUpgrade kernel-rt-64k-modules-coreUpgrade kernel-tools-libsUpgrade kernel-rt-64k-debug-coreUpgrade kernel-rt-64k-modulesUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-64k-debug-modules-extraUpgrade kernel-docUpgrade kernel-zfcpdump-coreUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-debug-devel-matchedUpgrade kernel-64k-debug-modulesUpgrade kernel-tools-libs-develUpgrade kernel-64k-debug-devel-matchedUpgrade kernel-64k-debug-modules-coreUpgrade perfUpgrade kernel-rt-64k-debugUpgrade kernel-debug-uki-virtUpgrade kernel-64k-modules-coreUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-modules-coreUpgrade kernel-zfcpdump-develUpgrade kernel-headersUpgrade kernel-rt-coreUpgrade kernel-modulesUpgrade kernel-develUpgrade libperfUpgrade rtlaUpgrade kernel-zfcpdumpUpgrade kernel-64k-coreUpgrade kernel-devel-matchedUpgrade kernel-modules-extraUpgrade kernel-64k-debug-develUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-debugUpgrade kernel-uki-virtUpgrade kernel-debug-develUpgrade kernel-rt-64k-coreUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernel-debug-modules-coreUpgrade kernel-coreUpgrade python3-perfUpgrade kernel-cross-headersUpgrade kernel-64kUpgrade kernel-debug-modulesUpgrade kernelUpgrade kernel-debug-coreUpgrade kernel-rt-debug-develUpgrade kernel-rt-debug-modulesUpgrade kernel-64k-develUpgrade kernel-64k-modulesUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-debugUpgrade kernel-zfcpdump-modules-extra | Oct 11, 2026 | Sep 9, 2026 |
| Oracle_linux | — | Upgrade kernel | Oct 22, 2026 | Jun 9, 2026 |
| Redhat_linux | — | Upgrade kernelNo solution existsUpgrade kernel-rt | Jul 17, 2026 | Jun 9, 2026 |
| Rocky_linux | — | Upgrade kernel-uki-virtUpgrade kernel-modules-extraUpgrade libperfUpgrade kernel-modules-coreUpgrade python3-perfUpgrade kernel-debugUpgrade kernel-rt-debug-modules-extraUpgrade perfUpgrade kernel-rt-debug-develUpgrade python3-perf-debuginfoUpgrade kernel-zfcpdump-develUpgrade kernel-rt-modulesUpgrade kernel-coreUpgrade kernel-zfcpdumpUpgrade kernel-debug-debuginfoUpgrade kernel-rt-coreUpgrade kernel-rt-debugUpgrade kernel-debuginfoUpgrade kernel-tools-libsUpgrade kernel-debug-modules-coreUpgrade kernel-debug-coreUpgrade perf-debuginfoUpgrade rtlaUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-debug-develUpgrade kernel-debug-modulesUpgrade kernel-develUpgrade kernel-rt-debug-modulesUpgrade kernel-debug-uki-virtUpgrade kernel-modulesUpgrade kernel-rt-debug-modules-coreUpgrade kernel-tools-debuginfoUpgrade kernel-rt-develUpgrade kernelUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-zfcpdump-devel-matchedUpgrade kernel-uki-virt-addonsUpgrade kernel-rtUpgrade kernel-devel-matchedUpgrade kernel-zfcpdump-debuginfoUpgrade kernel-zfcpdump-coreUpgrade kernel-rt-debug-coreUpgrade kernel-toolsUpgrade kernel-rt-modules-coreUpgrade kernel-debuginfo-common-s390xUpgrade kernel-debug-modules-extraUpgrade kernel-debug-devel-matchedUpgrade kernel-zfcpdump-modulesUpgrade kernel-tools-libs-develUpgrade libperf-debuginfoUpgrade rvUpgrade kernel-rt-debug-debuginfo | Sep 15, 2026 | Sep 11, 2026 |
| Ubuntu | — | Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-6.8.0-1035-nvidia-tegraUpgrade linux-image-6.8.0-1035-nvidia-tegra-rtUpgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-tegra-6.8No solution existsUpgrade linux-image-nvidia-tegra-rt-6.8 | Sep 21, 2026 | Sep 18, 2026 |
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