| commit | 4f649902013fdd85c9acbcd77e874cdefe5a4c6d | [log] [tgz] |
|---|---|---|
| author | Bao-Duy Tran <tranbaoduy@chromium.org> | Mon Aug 04 02:38:07 2025 |
| committer | Copybara-Service <copybara-worker@google.com> | Mon Aug 04 02:43:21 2025 |
| tree | 25cbae7956b3f73536d54ad953c1eba3355f9f50 | |
| parent | 8ab1f185a721b2fe5b684ce9a78bb80b1950feeb [diff] |
Restrict prlimit64 syscall as getrlimit in CrOS IME Service sandbox. A base lib used by CrOS IME shared lib (internal repo, running in CrOS IME Service) started invoking getrlimit syscall circa Dec 2024, which can manifest as prlimit64 that violates the current sandbox policy. Bug: b:431094157 Change-Id: I7d2cdb91f9ae341d885686c79dee252ab639e401 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6810365 Reviewed-by: Darren Shen <shend@chromium.org> Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org> Reviewed-by: Matthew Denton <mpdenton@chromium.org> Commit-Queue: Bao-Duy Tran <tranbaoduy@chromium.org> Cr-Commit-Position: refs/heads/main@{#1496108} NOKEYCHECK=True GitOrigin-RevId: 730d892e6900202fb47793903f33db12019f61da
This directory contains platform-specific sandboxing libraries. Sandboxing is a technique that can improve the security of an application by separating untrustworthy code (or code that handles untrustworthy data) and restricting its privileges and capabilities.
Each platform relies on the operating system's process primitive to isolate code into distinct security principals, and platform-specific technologies are used to implement the privilege reduction. At a high-level:
mac/ uses the Seatbelt sandbox. See the detailed design for more.linux/ uses namespaces and Seccomp-BPF. See the detailed design for more.win/ uses a combination of restricted tokens, distinct job objects, alternate desktops, and integrity levels. See the detailed design for more.Built on top of the low-level sandboxing library is the //sandbox/policy component, which provides concrete policies and helper utilities for sandboxing specific Chromium processes and services. The core sandbox library cannot depend on the policy component.