Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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Royyan Zahir 9f73ff7e77 arch/arm64: bound pgalloc() to the user heap
pgalloc() is a syscall in a kernel build. Its start was checked by
DEBUGASSERT only and its end not at all, so a user task could map pages
past ARCH_ADDRENV_VEND.

Signed-off-by: Royyan Zahir <royzah@gmail.com>
2026-10-01 22:53:42 +08:00
.github build(deps): bump docker/setup-buildx-action from 4.3.0 to 4.4.1 2026-09-21 16:28:50 +08:00
arch arch/arm64: bound pgalloc() to the user heap 2026-10-01 22:53:42 +08:00
audio
binfmt libs/libc: Define the NXFLAT ABI marker in libc. 2026-09-28 16:45:48 -03:00
boards boards/risc-v/esp32c2/esp8684-devkitm: add ROMFS and extra configs 2026-09-30 11:49:41 -03:00
cmake cmake: fix undefined function name in parse args error messages 2026-09-11 21:15:22 +08:00
crypto crypto: fix chacha constants under GCC 15. 2026-09-20 08:22:11 -03:00
Documentation Documentation/guides/rust: update config requirements 2026-10-01 17:58:02 +08:00
drivers drivers/mmcsd/mmcsd_sdio.c: fix legacy nxstyle alignment in ioctl switches 2026-10-01 22:14:44 +08:00
dummy
fs sched/semaphore: Fix pre-existing nxstyle issues in the touched files 2026-09-25 10:37:43 +02:00
graphics graphics/nxterm: consume SGR escape sequences 2026-08-23 10:46:02 +08:00
include include/fcntl.h: keep open() flags within a 16-bit int 2026-10-01 08:54:02 -03:00
libs libs/libc/elf: Read the dynamic relocations at their file offset. 2026-09-30 13:40:02 -03:00
mm mm/iob: fix CONFIG_NET_TIMESTAMPING typo in iob_alloc 2026-09-19 16:36:47 -03:00
net net/netdev: add NETDEV_TX_STAMP and handle SIOCETHTOOL ETHTOOL_GET_TS_INFO 2026-09-28 12:53:24 -03:00
openamp
pass1
sched sched/clock: keep the seqlock sequence in uint32_t 2026-10-01 10:17:21 -03:00
syscall fs: add chroot() syscall 2026-09-20 22:27:38 +08:00
tools tools/nxflat: Leave ARM unwind tables out of an NXFLAT module. 2026-09-28 16:45:09 -03:00
video video/videomode: Fix EDID parsing and formatting of video mode dumps 2026-08-29 11:09:11 -03:00
wireless wireless/bluetooth: Validate Number Of Completed Packets event. 2026-09-25 10:35:51 +02:00
.asf.yaml
.codespell-ignore-lines
.codespellrc zbus: Add linker support and documentation for the zbus port 2026-09-21 08:40:14 -03:00
.editorconfig
.gitignore boards/risc-v/eic7700x: Adopt the common board layout. 2026-08-19 01:40:57 +08:00
.gitmessage
.mcp.json arch/risc-v/eic7700x: Describe and configure the pads. 2026-09-28 16:19:01 +08:00
.pre-commit-config.yaml
.yamllint
AUTHORS AUTHORS: add Jorge Guzman 2026-08-25 08:43:13 -04:00
CMakeLists.txt cmake: reconfigure when .config changes 2026-09-14 18:40:45 -03:00
CONTRIBUTING.md
INVIOLABLES.md
Kconfig include/nuttx: Add link-time iterable sections infrastructure 2026-08-27 01:04:05 +08:00
LICENSE
Makefile
NOTICE
README.md
ReleaseNotes

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Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).

For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.

Getting Started

First time on NuttX? Read the Getting Started guide! If you don't have a board available, NuttX has its own simulator that you can run on terminal.

Documentation

You can find the current NuttX documentation on the Documentation Page.

Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.

The old NuttX documentation is still available in the Apache wiki.

Supported Boards

NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.

Contributing

If you wish to contribute to the NuttX project, read the Contributing guidelines for information on Git usage, coding standard, workflow and the NuttX principles.

License

The code in this repository is under either the Apache 2 license, or a license compatible with the Apache 2 license. See the License Page for more information.