git: 94f08f6a84e3 - stable/15 - nfsuserd: Fix OOB access on membership of too many groups, take 2

The branch stable/15 has been updated by olce:

URL: https://cgit.FreeBSD.org/src/commit/?id=94f08f6a84e3e57692c1d244d234007b5a9f5cc5

commit 94f08f6a84e3e57692c1d244d234007b5a9f5cc5
Author:     Olivier Certner <olce@FreeBSD.org>
AuthorDate: 2025-10-09 17:03:11 +0000
Commit:     Olivier Certner <olce@FreeBSD.org>
CommitDate: 2025-10-09 20:40:43 +0000

    nfsuserd: Fix OOB access on membership of too many groups, take 2
    
    Forgot to reset 'ngroup' after one of the calls to getgrouplist() in the
    previous commit with same title (referenced also below).
    
    MFC after:      1 hour
    Fixes:          e6c623c86ab4 ("Add support for the "-manage-gids" option to the nfsuserd daemon.")
    Fixes:          bb339adfb2a2 ("nfsuserd: Fix OOB access on membership of too many groups")
    Sponsored by:   The FreeBSD Foundation
    
    (cherry picked from commit 75eb6846269bb9bec1eaf4f0ad93d7525715b550)
---
 usr.sbin/nfsuserd/nfsuserd.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/usr.sbin/nfsuserd/nfsuserd.c b/usr.sbin/nfsuserd/nfsuserd.c
index 0e5c9c8f1e50..058253beaf95 100644
--- a/usr.sbin/nfsuserd/nfsuserd.c
+++ b/usr.sbin/nfsuserd/nfsuserd.c
@@ -629,6 +629,7 @@ nfsuserdsrv(struct svc_req *rqstp, SVCXPRT *transp)
 					syslog(LOG_ERR,
 					    "Group list of user '%s' too big",
 					    pwd->pw_name);
+					ngroup = NGROUPS;
 				}
 				nid.nid_ngroup = ngroup;
 				nid.nid_grps = grps;