Date: Fri, 30 Sep 2022 11:58:54 GMT From: Kristof Provost <kp@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 8707cb19e681 - main - if_vxlan(4): Check the size of data available in mbuf before using them Message-ID: <202209301158.28UBwswl033005@gitrepo.freebsd.org>
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The branch main has been updated by kp: URL: https://cgit.FreeBSD.org/src/commit/?id=8707cb19e68128c181477d87f960182c14e15f12 commit 8707cb19e68128c181477d87f960182c14e15f12 Author: Zhenlei Huang <zlei.huang@gmail.com> AuthorDate: 2022-09-30 07:55:29 +0000 Commit: Kristof Provost <kp@FreeBSD.org> CommitDate: 2022-09-30 07:56:15 +0000 if_vxlan(4): Check the size of data available in mbuf before using them PR: 261711 Reviewed by: kp Differential Revision: https://reviews.freebsd.org/D36794 --- sys/net/if_vxlan.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sys/net/if_vxlan.c b/sys/net/if_vxlan.c index 6c9a3d7e3095..cba2ba4b0a16 100644 --- a/sys/net/if_vxlan.c +++ b/sys/net/if_vxlan.c @@ -2849,6 +2849,12 @@ vxlan_input(struct vxlan_socket *vso, uint32_t vni, struct mbuf **m0, return (ENOENT); ifp = sc->vxl_ifp; + if (m->m_len < ETHER_HDR_LEN && + (m = m_pullup(m, ETHER_HDR_LEN)) == NULL) { + *m0 = NULL; + error = ENOBUFS; + goto out; + } eh = mtod(m, struct ether_header *); if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) {
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