diff options
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/CVE-2019-15890.patch')
-rw-r--r-- | meta/recipes-devtools/qemu/qemu/CVE-2019-15890.patch | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2019-15890.patch b/meta/recipes-devtools/qemu/qemu/CVE-2019-15890.patch deleted file mode 100644 index 1d89431be6..0000000000 --- a/meta/recipes-devtools/qemu/qemu/CVE-2019-15890.patch +++ /dev/null | |||
@@ -1,48 +0,0 @@ | |||
1 | From 4fc0d23e8f6d795c679623d2ed2cbe6a7a17b9c7 Mon Sep 17 00:00:00 2001 | ||
2 | From: Li Zhou <li.zhou@windriver.com> | ||
3 | Date: Tue, 10 Sep 2019 20:02:15 -0700 | ||
4 | Subject: [PATCH] ip_reass: Fix use after free | ||
5 | |||
6 | Using ip_deq after m_free might read pointers from an allocation reuse. | ||
7 | |||
8 | This would be difficult to exploit, but that is still related with | ||
9 | CVE-2019-14378 which generates fragmented IP packets that would trigger this | ||
10 | issue and at least produce a DoS. | ||
11 | |||
12 | Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> | ||
13 | |||
14 | Upstream-Status: Backport | ||
15 | CVE: CVE-2019-15890 | ||
16 | Signed-off-by: Li Zhou <li.zhou@windriver.com> | ||
17 | --- | ||
18 | slirp/src/ip_input.c | 6 ++++-- | ||
19 | 1 file changed, 4 insertions(+), 2 deletions(-) | ||
20 | |||
21 | diff --git a/slirp/src/ip_input.c b/slirp/src/ip_input.c | ||
22 | index 8c75d914..c07d7d40 100644 | ||
23 | --- a/slirp/src/ip_input.c | ||
24 | +++ b/slirp/src/ip_input.c | ||
25 | @@ -292,6 +292,7 @@ static struct ip *ip_reass(Slirp *slirp, struct ip *ip, struct ipq *fp) | ||
26 | */ | ||
27 | while (q != (struct ipasfrag *)&fp->frag_link && | ||
28 | ip->ip_off + ip->ip_len > q->ipf_off) { | ||
29 | + struct ipasfrag *prev; | ||
30 | i = (ip->ip_off + ip->ip_len) - q->ipf_off; | ||
31 | if (i < q->ipf_len) { | ||
32 | q->ipf_len -= i; | ||
33 | @@ -299,9 +300,10 @@ static struct ip *ip_reass(Slirp *slirp, struct ip *ip, struct ipq *fp) | ||
34 | m_adj(dtom(slirp, q), i); | ||
35 | break; | ||
36 | } | ||
37 | + prev = q; | ||
38 | q = q->ipf_next; | ||
39 | - m_free(dtom(slirp, q->ipf_prev)); | ||
40 | - ip_deq(q->ipf_prev); | ||
41 | + ip_deq(prev); | ||
42 | + m_free(dtom(slirp, prev)); | ||
43 | } | ||
44 | |||
45 | insert: | ||
46 | -- | ||
47 | 2.23.0 | ||
48 | |||