Date: Fri, 28 Nov 2025 21:29:15 +0000 From: Olivier Certner <olce@FreeBSD.org> To: doc-committers@FreeBSD.org, dev-commits-doc-all@FreeBSD.org Subject: git: cd1108f7c6 - main - releases/15.0R/relnotes: setgroups(2), getgroups(2), initgroups(3) changes Message-ID: <692a142b.32dfb.6c26938f@gitrepo.freebsd.org>
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The branch main has been updated by olce: URL: https://cgit.FreeBSD.org/doc/commit/?id=cd1108f7c63ac5dfb87b0a4893f86a2b1be98baa commit cd1108f7c63ac5dfb87b0a4893f86a2b1be98baa Author: Olivier Certner <olce@FreeBSD.org> AuthorDate: 2025-11-28 18:15:05 +0000 Commit: Olivier Certner <olce@FreeBSD.org> CommitDate: 2025-11-28 21:28:36 +0000 releases/15.0R/relnotes: setgroups(2), getgroups(2), initgroups(3) changes Inline the points that must be audited. For the rest, redirect people to the proper manual pages, where SECURITY CONSIDERATIONS sections were added. Sponsored by: The FreeBSD Foundation --- website/content/en/releases/15.0R/relnotes.adoc | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/website/content/en/releases/15.0R/relnotes.adoc b/website/content/en/releases/15.0R/relnotes.adoc index beb6fac49d..ec45bfa214 100644 --- a/website/content/en/releases/15.0R/relnotes.adoc +++ b/website/content/en/releases/15.0R/relnotes.adoc @@ -587,6 +587,21 @@ gitref:e77813f7e4a3[repository=src] The accuracy of man:asinf[3] and man:acosf[3] has improved. gitref:33c82f11c267[repository=src] +The man:setgroups[2] and man:getgroups[2] system calls and the man:initgroups[3] library function have been changed to avoid setting or reporting the effective group ID, now only concerning themselves with the supplementary groups. +The main purpose of this change is to avoid security issues going forward by becoming compatible with Linux/glibc, OpenBSD, NetBSD and illumos-based systems. +Consequently, almost all portable applications should already be compliant with this new behavior and will continue to work correctly or even get fixed in the process (see, e.g., gitref:239e8c98636a[repository=src] for an example affecting OpenSSH). +However, out of caution, porters, system administrators and users are advised to audit their applications using man:setgroups[2], man:getgroups[2] and man:initgroups[3], watching out for the following points. +Applications must be using man:setgid[2] or man:setegid[2] in addition to man:setgroups[2] or man:initgroups[3] to set the effective group ID. +They must not treat the first element of the array returned by man:getgroups[2] specially, but instead as any other supplementary group. +For more information, please consult the SECURITY CONSIDERATIONS sections that have been added to the man:setgroups[2], man:getgroups[2] and man:initgroups[3] manual pages. +Compatibility system calls and library functions have been provided so that binaries and libraries compiled on FreeBSD 14 systems or earlier will continue to work exactly as before. +gitref:9da2fe96ff2e[repository=src], +gitref:8878569103a3[repository=src], +gitref:7132fb5edbc9[repository=src], +gitref:2932e6f59bff[repository=src], +gitref:8878569103a3[repository=src] +(Sponsored by The FreeBSD Foundation.) + [[userland-deprecated-programs]] === Deprecated Applicationshelp
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