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In the Linux kernel, the following vulnerability has been resolved:
tls: reject the combination of TLS and sockmap
TLS and sockmap (BPF psock) integration hides a lot of latent bugs. Bugs which may be more or less relevant for real users but they are definitely exploitable.
We could not find anyone actively using this integration so let's reject this config. Adding a TLS socket to a sockmap was already rejected by sk_psock_init() through the inet_csk_has_ulp() check. We need to reject the attempts to configure the TLS keys (rather than adding the ULP itself) because checking prior to the ULP installation is tricky without risking a race with sockmap getting added in parallel (sockmap does not hold the socket lock).
This patch is a minimal rejection of the feature. Subsequent patch in the series will do a light dead code removal. Full cleanup would require a major rewrite of the Tx path, we don't need skmsg any more.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade microvm-kernel6.18Upgrade bpftool6.12-debuginfoUpgrade kernel6.12-tools-develUpgrade python3-perf6.12Upgrade perf6.12-debuginfoUpgrade kernel6.18-modules-extraUpgrade kernel-livepatch-6.18.54-121.166Upgrade kernel6.18-modules-extra-commonUpgrade python3-perf6.18Upgrade kernel6.12Upgrade kernel6.18Upgrade perf6.18-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-develUpgrade kernel6.12-toolsUpgrade kernel6.18-tools-debuginfoUpgrade bpftool6.18Upgrade kernel6.18-debuginfo-common-aarch64Upgrade kernel6.12-modules-extra-commonUpgrade kernel6.12-modules-extraUpgrade kernel6.12-headersUpgrade kernel6.12-debuginfo-common-x86_64Upgrade python3-perf6.18-debuginfoUpgrade kernel6.12-tools-debuginfoUpgrade kernel-livepatch-6.12.111-136.204Upgrade bpftool6.12Upgrade kernel6.18-tools-develUpgrade kernel6.18-develUpgrade kernel6.18-debuginfo-common-x86_64Upgrade perf6.18Upgrade perf6.12Upgrade bpftool6.18-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade kernel6.12-debuginfoUpgrade kernel6.18-toolsUpgrade kernel6.18-headersUpgrade kernel6.18-debuginfo | Oct 13, 2026 | Sep 24, 2026 |
| Debian | — | Upgrade linux-6.12Upgrade linux | Sep 30, 2026 | Sep 24, 2026 |
| Redhat_linux | — | No solution exists | Sep 30, 2026 | Sep 24, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 13, 2026 | Sep 24, 2026 |
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