patches 3 vulnerabilities published in bitcoin core 10/28/2026
https://bitcoincore.org/en/2026/10/28/disclose-fpausesend-oom/
Disconnect peers whose send buffer remains paused for 20 minutes, independent of protocol version and ping state. Preserve the original pause deadline while more messages are queued, and cover legacy and current peer versions in socket tests.
3fdf976
https://bitcoincore.org/en/2026/10/28/disclose-tcp-oom/
Honor receive backpressure for exceptional socket readiness and recheck the pause before reading. Add an isolated socket regression that reproduces the unpatched queue growth.
d372b1c
https://bitcoincore.org/en/2026/10/28/disclose-undo-overflow/
Use 64-bit block/undo positions, size accounting, allocation arithmetic, and file positioning/truncation calls. Preserve existing VARINT disk encodings and reject unsupported file ranges without wrapping.
Add serialization compatibility and sparse-file regressions across the 2 GiB and 4 GiB boundaries.
59ed18c
Full Changelog: v26.10.1...v26.10.2