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-modulesUpgrade rtlaUpgrade kernel-rt-debug-modulesUpgrade kernel-64kUpgrade python3-perfUpgrade kernel-modules-coreUpgrade kernelUpgrade kernel-debugUpgrade kernel-coreUpgrade kernel-rt-coreUpgrade kernel-rt-debug-develUpgrade kernel-debug-uki-virtUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-64k-coreUpgrade kernel-zfcpdumpUpgrade kernel-debug-coreUpgrade kernel-zfcpdump-develUpgrade kernel-64k-modules-coreUpgrade kernel-zfcpdump-coreUpgrade kernel-debug-modules-extraUpgrade kernel-rt-64k-modules-extraUpgrade kernel-rt-64kUpgrade kernel-debug-devel-matchedUpgrade rvUpgrade kernel-rt-modulesUpgrade perfUpgrade kernel-64k-debug-devel-matchedUpgrade kernel-abi-stablelistsUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-toolsUpgrade kernel-64k-debug-modules-extraUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-rt-64k-develUpgrade kernel-rtUpgrade kernel-tools-libs-develUpgrade kernel-64k-debug-modules-coreUpgrade kernel-rt-debug-modules-coreUpgrade kernel-rt-modules-extraUpgrade kernel-rt-modules-coreUpgrade kernel-rt-64k-debug-develUpgrade kernel-rt-64k-modules-coreUpgrade kernel-rt-develUpgrade kernel-rt-64k-debug-coreUpgrade kernel-rt-debug-coreUpgrade kernel-docUpgrade kernel-tools-libsUpgrade kernel-64k-debug-coreUpgrade kernel-rt-64k-modulesUpgrade kernel-64k-modules-extraUpgrade kernel-zfcpdump-modulesUpgrade kernel-64k-debugUpgrade kernel-uki-virt-addonsUpgrade kernel-64k-devel-matchedUpgrade kernel-64k-debug-modulesUpgrade kernel-rt-64k-debugUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-64k-debug-develUpgrade kernel-devel-matchedUpgrade kernel-cross-headersUpgrade kernel-debug-modulesUpgrade kernel-modules-extraUpgrade kernel-headersUpgrade kernel-develUpgrade kernel-64k-modulesUpgrade kernel-64k-develUpgrade libperfUpgrade kernel-debug-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-uki-virtUpgrade kernel-rt-debugUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernel-rt-64k-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-debug-modules-core | Oct 11, 2026 | Sep 9, 2026 |
| Redhat_linux | — | Upgrade kernelUpgrade kernel-rtNo solution exists | Jul 17, 2026 | Jun 9, 2026 |
| Rocky_linux | — | Upgrade python3-perfUpgrade kernel-modules-extraUpgrade kernel-zfcpdump-develUpgrade kernel-debug-modules-coreUpgrade kernel-rt-coreUpgrade kernel-debug-debuginfoUpgrade perf-debuginfoUpgrade kernel-rt-debugUpgrade kernel-zfcpdumpUpgrade kernel-debug-coreUpgrade rtlaUpgrade kernel-develUpgrade kernel-rt-debug-modules-extraUpgrade python3-perf-debuginfoUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-modulesUpgrade kernel-rt-debug-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-uki-virtUpgrade kernel-debuginfoUpgrade kernel-debug-modulesUpgrade libperfUpgrade kernel-coreUpgrade kernel-tools-libsUpgrade perfUpgrade kernel-debugUpgrade kernel-rt-debug-modules-coreUpgrade kernel-tools-debuginfoUpgrade kernel-modules-coreUpgrade kernel-debug-develUpgrade kernel-debug-uki-virtUpgrade kernel-modulesUpgrade kernel-zfcpdump-coreUpgrade kernel-uki-virt-addonsUpgrade kernel-rtUpgrade kernel-rt-develUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-rt-modules-extraUpgrade kernel-rt-debuginfoUpgrade rvUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-devel-matchedUpgrade kernel-zfcpdump-modulesUpgrade kernel-debuginfo-common-s390xUpgrade kernel-debug-modules-extraUpgrade libperf-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade kernelUpgrade kernel-rt-debug-debuginfoUpgrade kernel-toolsUpgrade kernel-rt-modules-coreUpgrade kernel-tools-libs-develUpgrade kernel-debug-devel-matchedUpgrade kernel-rt-debug-coreUpgrade kernel-zfcpdump-debuginfo | Sep 15, 2026 | Sep 11, 2026 |
| Ubuntu | — | Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-6.8.0-1035-nvidia-tegraNo solution existsUpgrade linux-image-nvidia-tegra-6.8Upgrade linux-image-6.8.0-1035-nvidia-tegra-rtUpgrade linux-image-nvidia-tegraUpgrade linux-image-nvidia-tegra-rt-6.8 | Sep 21, 2026 | Sep 18, 2026 |
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