git: 3c1ba1f1122a - stable/13 - netlink: check result of sooptcopyin().

The branch stable/13 has been updated by melifaro:

URL: https://cgit.FreeBSD.org/src/commit/?id=3c1ba1f1122a95980593df4629f1da22fb7d6d55

commit 3c1ba1f1122a95980593df4629f1da22fb7d6d55
Author:     Alexander V. Chernikov <melifaro@FreeBSD.org>
AuthorDate: 2023-02-18 17:15:25 +0000
Commit:     Alexander V. Chernikov <melifaro@FreeBSD.org>
CommitDate: 2023-04-08 19:14:11 +0000

    netlink: check result of sooptcopyin().
    
    CID:            1498866
    MFC after:      2 weeks
    
    (cherry picked from commit 3f70fca90f9f1c6a40e55e6edd2dc1b1272f4998)
---
 sys/netlink/netlink_domain.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/sys/netlink/netlink_domain.c b/sys/netlink/netlink_domain.c
index 89de379c2e5d..c9e51cd98ea6 100644
--- a/sys/netlink/netlink_domain.c
+++ b/sys/netlink/netlink_domain.c
@@ -623,7 +623,9 @@ nl_ctloutput(struct socket *so, struct sockopt *sopt)
 		switch (sopt->sopt_name) {
 		case NETLINK_ADD_MEMBERSHIP:
 		case NETLINK_DROP_MEMBERSHIP:
-			sooptcopyin(sopt, &optval, sizeof(optval), sizeof(optval));
+			error = sooptcopyin(sopt, &optval, sizeof(optval), sizeof(optval));
+			if (error != 0)
+				break;
 			if (optval <= 0 || optval >= NLP_MAX_GROUPS) {
 				error = ERANGE;
 				break;
@@ -640,7 +642,9 @@ nl_ctloutput(struct socket *so, struct sockopt *sopt)
 		case NETLINK_CAP_ACK:
 		case NETLINK_EXT_ACK:
 		case NETLINK_GET_STRICT_CHK:
-			sooptcopyin(sopt, &optval, sizeof(optval), sizeof(optval));
+			error = sooptcopyin(sopt, &optval, sizeof(optval), sizeof(optval));
+			if (error != 0)
+				break;
 
 			flag = nl_getoptflag(sopt->sopt_name);