diff options
Diffstat (limited to 'meta/recipes-core/expat/expat/CVE-2022-23852.patch')
-rw-r--r-- | meta/recipes-core/expat/expat/CVE-2022-23852.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/meta/recipes-core/expat/expat/CVE-2022-23852.patch b/meta/recipes-core/expat/expat/CVE-2022-23852.patch new file mode 100644 index 0000000000..41425c108b --- /dev/null +++ b/meta/recipes-core/expat/expat/CVE-2022-23852.patch | |||
@@ -0,0 +1,33 @@ | |||
1 | From 847a645152f5ebc10ac63b74b604d0c1a79fae40 Mon Sep 17 00:00:00 2001 | ||
2 | From: Samanta Navarro <ferivoz@riseup.net> | ||
3 | Date: Sat, 22 Jan 2022 17:48:00 +0100 | ||
4 | Subject: [PATCH] lib: Detect and prevent integer overflow in XML_GetBuffer | ||
5 | (CVE-2022-23852) | ||
6 | |||
7 | Upstream-Status: Backport: | ||
8 | https://github.com/libexpat/libexpat/commit/847a645152f5ebc10ac63b74b604d0c1a79fae40 | ||
9 | |||
10 | CVE: CVE-2022-23852 | ||
11 | |||
12 | Signed-off-by: Steve Sakoman <steve@sakoman.com> | ||
13 | |||
14 | --- | ||
15 | expat/lib/xmlparse.c | 5 +++++ | ||
16 | 1 file changed, 5 insertions(+) | ||
17 | |||
18 | diff --git a/expat/lib/xmlparse.c b/expat/lib/xmlparse.c | ||
19 | index d54af683..5ce31402 100644 | ||
20 | --- a/lib/xmlparse.c | ||
21 | +++ b/lib/xmlparse.c | ||
22 | @@ -2067,6 +2067,11 @@ XML_GetBuffer(XML_Parser parser, int len) { | ||
23 | keep = (int)EXPAT_SAFE_PTR_DIFF(parser->m_bufferPtr, parser->m_buffer); | ||
24 | if (keep > XML_CONTEXT_BYTES) | ||
25 | keep = XML_CONTEXT_BYTES; | ||
26 | + /* Detect and prevent integer overflow */ | ||
27 | + if (keep > INT_MAX - neededSize) { | ||
28 | + parser->m_errorCode = XML_ERROR_NO_MEMORY; | ||
29 | + return NULL; | ||
30 | + } | ||
31 | neededSize += keep; | ||
32 | #endif /* defined XML_CONTEXT_BYTES */ | ||
33 | if (neededSize | ||