linux: In the Linux kernel, the following vulnerability has been resolved: mptcp: reclaim forward-allocated memory on RX pa...
CVE-2026-80588 is fixed in 20 products on 1 platform, first by DEBIAN-CVE-2026-80588, released September 4, 2026. It is not reported as exploited. Patch Radar priority: High.
In the Linux kernel, the following vulnerability has been resolved: mptcp: reclaim forward-allocated memory on RX path errors After commit 9db5b3cec4ec ("mptcp: borrow forward memory from subflow"), errors in the receive path prior to queueing skbs into the receive queue do not trigger forward-allocated memory reclaiming. Prevent forward memory from growing unboundedly in pathological drop scenarios by explicitly reclaiming memory when skbs are dropped.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| bpftool6.18 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| bpftool6.18-debuginfo · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel-livepatch-6.18.48-107.148 · amzn 2023 | 1:1.0-0.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-debuginfo · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-debuginfo-common-aarch64 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-debuginfo-common-x86_64 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-devel · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-headers · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-modules-extra · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-modules-extra-common · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-tools · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-tools-debuginfo · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| kernel6.18-tools-devel · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| linux · Debian 14 | 7.1.10-1 | DEBIAN-CVE-2026-80588 | Sep 4, 2026 |
| microvm-kernel6.18 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| perf6.18 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| perf6.18-debuginfo · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| python3-perf6.18 · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
| python3-perf6.18-debuginfo · amzn 2023 | 1:6.18.48-107.148.amzn2023 | ALAS2023-2026-3139 | Sep 28, 2026 |
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