[DragonFlyBSD - Bug #3425] (Resolved) cpdup: getgroups(0, ...) reads an uninitialized pointer

[liweitianux]

Issue #3425 has been updated by liweitianux.

Status changed from New to Resolved
Assignee set to liweitianux

Thank you for the patch. Already merged into the master and 6.4 branches.

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Bug #3425: cpdup: getgroups(0, ...) reads an uninitialized pointer
http://bugs.dragonflybsd.org/issues/3425#change-14704

* Author: sigttou
* Status: Resolved
* Priority: Normal
* Assignee: liweitianux
* Category: Userland
* Target version: 6.6
* Start date: 2026-09-26
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getmygroups() calls getgroups(0, *gidlist) to get the group count before
*gidlist is initialized. With a size of 0 the list argument is ignored and
may be NULL.

Pass NULL. getmygroups() is also reached through hc_getgroups(), whose
caller owns *gidlist, so the callee must not read it.

---Files--------------------------------
0001-cpdup-Don-t-pass-an-uninitialized-pointer-to-getgrou.patch (931 Bytes)


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