libuv-1.53.0

[Bruce Dubbs]

New minor version.

[Joe Locash]

2026.09.24, Version 1.53.0 (Stable)

Changes since version 1.52.1:

* unix: fix pedantic compiler warnings (Ben Noordhuis)

* win: fix const correctness compiler error (apocelipes)

* doc: clarify handle close behavior of uv_spawn (Ben Noordhuis)

* doc: name function crosslinks consistently (Ben Noordhuis)

* win: fix const correctness warning (Ben Noordhuis)

* win: fix off-by-one in utf-16 to wtf-8 conversion (locus-x64)

* udp: validate nbufs in send functions (Oren)

* unix: improve handling of uv_async_send mistakes (Jameson Nash)

* unix,stream: verify uv_try_write2 handle (cui)

* test,win: fix race in test runner (Jameson Nash)

* unix,tty: don't drain when setting the TTY mode (Gabriel Baraldi)

* inet: prefer sizeof with parenthesis (Juan José Arboleda)

* test: remove unused headers and use newer ASSERT macros (Juan José Arboleda)

* doc: Add textual images into libuv man page (Stacey Marshall)

* darwin: replace EV_OOBAND handling with EVFILT_EXCEPT + NOTE_OOB (Juan José
  Arboleda)

* docs: add copybutton sphinx extension (HArsil)

* doc: fix threading bugs in progress example (PRANAV KUMAR)

* unix: support long path names in pipe.c (Edigleysson Silva (Edy))

* win: fix some compiler warnings (Benjamin Gilbert)

* docs: fix broken and redirected links (Jameson Nash)

* doc: remove random reference to libev (Ben Noordhuis)

* process: better validation for process->pid usage (Jameson Nash)

* unix: check return value of fcntl call (Ben Noordhuis)

* test: fix -Wunused-function warning (Ben Noordhuis)

* linux: close streams without an extra read (Jameson Nash)

* unix: enforce recvmmsg buffer size requirements (Ben Noordhuis)

* android: fix termux build (BarryLhm)

* io: make libuv 64-bit safe (Jameson Nash)

* win,pipe: skip IOCP for pipe handles (Jameson Nash)

* win: use WSA_FLAG_NO_HANDLE_INHERIT in all WSASocketW (Jameson Nash)

* unix: use posix_spawn instead of fork (Jameson Nash)

* test: use correct type for uv_fileno arguments (Saúl Ibarra Corretgé)

* misc: revise security vulnerability reporting instructions (Jameson Nash)

* win: fix watch loop logic (Stefan Stojanovic)

* win: properly initialize OSVERSIONINFOW (Santiago Gimeno)

* misc: fix error code returned from uv_wtf8_length_as_utf16 (Ryan Liptak)

* stream: fix server stop accepting after uv_accept() error (ivinx)

* unix,ibmi: abort on process_title_mutex init failure (Juan José Arboleda)

* unix,stream: fix getsockopt error handling in connect (Juan José Arboleda)

* unix: treat futimens() as best-effort in copyfile (skooch)

* unix: free statxbuf on iouring statx fallback (Santiago Gimeno)

* aix,ibmi: fix undeclared identifiers (SRAVANI GUNDEPALLI)

* unix: fix uv__udp_recvmsg crash (theanarkh)

* win: use PROC_THREAD_ATTRIBUTE_HANDLE_LIST in uv_spawn (Jameson Nash)

* unix: avoid duplicate recvmmsg terminal callback (Isaac Elbaz)

* win: fix spawn process with no argument (sturcotte06)

* unix: handle cloexec failure in kqueue init (Juan José Arboleda)

* unix: remove UV_HANDLE_READING flag (Edigleysson Silva (Edy))

* src: use INET6_ADDRSTRLEN for IPv6 address buffer (orbisai0security)

* test: include pty.h for GNU Hurd (Jérémy Lal)

* test: skip recvmsg unreachable test when no ipv6 (Santiago Gimeno)

* win: fix race condition in uv_async_send (Jameson Nash)

* unix,fs: fix busyloop in big copyfile (Jameson Nash)

* process,unix: avoid off-by-one in uv__spawn_resolve_and_spawn (Jameson Nash)

* test: check that sizeof is constant (Jameson Nash)

* async: make seq_cst the default (Jameson Nash)

* Reland "linux: eliminate a read on eventfd per wakeup" (Jameson Nash)

* win,process: skip dump silently if no valid folder can be determined (Jameson
  Nash)

* win: handle short path mismatch with a fallback in fs events (Joyee Cheung)

* unix,udp: handle msg_hdr.msg_namelen=0 on recvmmsg (Santiago Gimeno)

* ci: lock down permissions and pin action SHAs (Alb3e3)

* docs: ignore unstable ncurses linkcheck URL (Alb3e3)

* unix: handle EINTR in uv_resident_set_memory (Nandan Acharya)

* build(deps): bump reactivecircus/android-emulator-runner (dependabot[bot])

* build(deps): bump actions/setup-python from 6.2.0 to 6.3.0 (dependabot[bot])

* unix: return EINVAL for invalid tty modes (Samuel Williams)

* ci: use VS 18 / 2026 in Windows Server 2025 (Saúl Ibarra Corretgé)

* win: fix use of wrong constant in tcp code (Ben Noordhuis)

* unix: fix UV_FS_O_DIRECT on more linux architectures (Archkon)

* doc: add UB warning to threading documentation (Ben Noordhuis)

* build(deps): bump reactivecircus/android-emulator-runner (dependabot[bot])

* sunos: use getrandom(2) for uv_random (Petr Sumbera)

* unix,poll: fix callback event bits on error/hangup (Yuki Ibe)

* haiku: build tests with libbsd (Jérôme Duval)

* unix: fix static declaration in nested block for AIX and IBM i PASE
  (sravani1510)

* win: fix unique named pipes to work inside Windows AppContainer (Russ Cox)

* build(deps): bump actions/setup-python from 6.3.0 to 7.0.0 (dependabot[bot])

* build(deps): bump actions/checkout from 6.0.3 to 7.0.0 (dependabot[bot])

* stream: Implement cancellation support for uv_write_t (Keno Fischer)

* unix: handle trailing empty write buffers (Alb3e3)

* stream: handle cancel write after close (Tyler Gibbs)

* build(deps): bump actions/checkout from 7.0.0 to 7.0.1 (dependabot[bot])

* test: don't generate io_uring variants of loopless fs tests (Jameson Nash)

* test: close the loop in udp_recvmsg_unreachable_error{,6} (Jameson Nash)

* linux: use scaling_max_freq in uv_cpu_info() (James Ross)

* win: fix leak if uv_loop_init fails (Jameson Nash)

* solaris: fix build and test failures, add CI (Petr Sumbera)

* test: improve fs event filename assertion (Petr Sumbera)

* build(deps): bump vmactions/solaris-vm from 1.3.7 to 1.3.8 (dependabot[bot])

* build(deps): bump actions/checkout from 6.0.3 to 7.0.1 (dependabot[bot])

* win: fix crash when closing a pipe after a failed bind (Yury Semikhatsky)

* darwin: report physical footprint as rss (Jarred Sumner)

* test: close file descriptors leaked by tests (Jameson Nash)

* unix: short-circuit no-op event mask changes in uv__io_stop (Shelley Vohr)

* unix,process: never shrink the stdio socket pair buffers (Shelley Vohr)

* build(deps): bump vmactions/solaris-vm from 1.3.8 to 1.3.9 (dependabot[bot])

* linux: fix tcc build (Ben Noordhuis)

* aix: canonicalize fs event path with realpath() (Milad Fa)

* openbsd: use fork instead of posix_spawn (Ben Noordhuis)

* freebsd,netbsd,openbsd: add build CI (neil)

* win,fs: suppress CRT assertion on close (Yiğit Tanrıverdi)

* unix: drain tty reads on POLLHUP without POLLIN (Santiago Gimeno)

* doc: fix on guide filesystem.rst (Viacheslav Muravyev)

* linux: support cancelling io_uring file requests (hunterinvariants)

* build: distribute Windows long path manifest (Yiğit Tanrıverdi)

* netbsd: free cpu times on sysctl failure (cui fliter)

* build(deps): bump vmactions/netbsd-vm from 1.4.8 to 1.4.9 (dependabot[bot])

* freebsd: don't fail uv_cpu_info() when hw.clockrate is missing (Piotr Kubaj)

* build(deps): bump vmactions/netbsd-vm from 1.4.9 to 1.5.0 (dependabot[bot])

* build(deps): bump vmactions/solaris-vm from 1.3.9 to 1.4.0 (dependabot[bot])

* build(deps): bump vmactions/freebsd-vm from 1.5.5 to 1.5.6 (dependabot[bot])

* unix: fix warning in OpenBSD code (Brad Smith)

* test: lower number of iterations (Ben Noordhuis)

* openbsd: update EVFILT_USER comment (Brad Smith)

* freebsd: don't use long AF_UNIX socket paths (Juan José Arboleda)

* openbsd: use getexecpath in uv_exepath if present (Brad Smith)

* build(deps): bump vmactions/freebsd-vm from 1.5.6 to 1.5.7 (dependabot[bot])

* win: reserve explicit thread stack size (Zuohui Yang)

Fixed at caaac35809.