diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/CVE-2020-10756.patch')
| -rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2020-10756.patch | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2020-10756.patch b/meta/recipes-devtools/qemu/qemu/CVE-2020-10756.patch new file mode 100644 index 0000000000..306aef061b --- /dev/null +++ b/meta/recipes-devtools/qemu/qemu/CVE-2020-10756.patch @@ -0,0 +1,40 @@ +From c7ede54cbd2e2b25385325600958ba0124e31cc0 Mon Sep 17 00:00:00 2001 +From: Ralf Haferkamp <rhafer@suse.com> +Date: Fri, 3 Jul 2020 14:51:16 +0200 +Subject: [PATCH] Drop bogus IPv6 messages + +Drop IPv6 message shorter than what's mentioned in the payload +length header (+ the size of the IPv6 header). They're invalid an could +lead to data leakage in icmp6_send_echoreply(). + +CVE: CVE-2020-10756 +Upstream-Status: Backport +https://gitlab.freedesktop.org/slirp/libslirp/-/commit/c7ede54cbd2e2b25385325600958ba0124e31cc0 + +[SG: Based on libslirp commit c7ede54cbd2e2b25385325600958ba0124e31cc0 and adjusted context] +Signed-off-by: Stefan Ghinea <stefan.ghinea@windriver.com> +--- + slirp/src/ip6_input.c | 7 +++++++ + 1 file changed, 7 insertions(+) + +diff --git a/slirp/src/ip6_input.c b/slirp/src/ip6_input.c +index d9d2b7e9..0f2b1785 100644 +--- a/slirp/src/ip6_input.c ++++ b/slirp/src/ip6_input.c +@@ -49,6 +49,13 @@ void ip6_input(struct mbuf *m) + goto bad; + } + ++ // Check if the message size is big enough to hold what's ++ // set in the payload length header. If not this is an invalid ++ // packet ++ if (m->m_len < ntohs(ip6->ip_pl) + sizeof(struct ip6)) { ++ goto bad; ++ } ++ + /* check ip_ttl for a correct ICMP reply */ + if (ip6->ip_hl == 0) { + icmp6_send_error(m, ICMP6_TIMXCEED, ICMP6_TIMXCEED_INTRANS); +-- +2.17.1 + |