diff options
| author |   Liu Ye <liuye@kylinos.cn> | 2025-01-16 09:30:37 +0800 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2025-01-20 11:25:25 -0800 |
| commit | 3a0b7fa095212b51ed63892540c4f249991a2d74 (patch) | |
| tree | 1da6283619764371da1b599b7f37889e29574280 | |
| parent | net: phy: realtek: HWMON support for standalone versions of RTL8221B and RTL8251 (diff) | |
| download | wireguard-linux-3a0b7fa095212b51ed63892540c4f249991a2d74.tar.xz wireguard-linux-3a0b7fa095212b51ed63892540c4f249991a2d74.zip | |
selftests/net/ipsec: Fix Null pointer dereference in rtattr_pack()
Address Null pointer dereference / undefined behavior in rtattr_pack
(note that size is 0 in the bad case).
Flagged by cppcheck as:
tools/testing/selftests/net/ipsec.c:230:25: warning: Possible null pointer
dereference: payload [nullPointer]
memcpy(RTA_DATA(attr), payload, size);
^
tools/testing/selftests/net/ipsec.c:1618:54: note: Calling function 'rtattr_pack',
4th argument 'NULL' value is 0
if (rtattr_pack(&req.nh, sizeof(req), XFRMA_IF_ID, NULL, 0)) {
^
tools/testing/selftests/net/ipsec.c:230:25: note: Null pointer dereference
memcpy(RTA_DATA(attr), payload, size);
^
Signed-off-by: Liu Ye <liuye@kylinos.cn>
Link: https://patch.msgid.link/20250116013037.29470-1-liuye@kylinos.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | tools/testing/selftests/net/ipsec.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/testing/selftests/net/ipsec.c b/tools/testing/selftests/net/ipsec.c index be4a30a0d02a..9b44a091802c 100644 --- a/tools/testing/selftests/net/ipsec.c +++ b/tools/testing/selftests/net/ipsec.c @@ -227,7 +227,8 @@ static int rtattr_pack(struct nlmsghdr *nh, size_t req_sz, attr->rta_len = RTA_LENGTH(size); attr->rta_type = rta_type; - memcpy(RTA_DATA(attr), payload, size); + if (payload) + memcpy(RTA_DATA(attr), payload, size); return 0; } |