diff options
Diffstat (limited to 'gnu/packages/patches/expat-CVE-2024-45491.patch')
| -rw-r--r-- | gnu/packages/patches/expat-CVE-2024-45491.patch | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/gnu/packages/patches/expat-CVE-2024-45491.patch b/gnu/packages/patches/expat-CVE-2024-45491.patch new file mode 100644 index 0000000000..8ff10559bf --- /dev/null +++ b/gnu/packages/patches/expat-CVE-2024-45491.patch @@ -0,0 +1,34 @@ +https://github.com/libexpat/libexpat/commit/8e439a9947e9dc80a395c0c7456545d8d9d9e421.patch +Fixed in 2.6.3. + +From 8e439a9947e9dc80a395c0c7456545d8d9d9e421 Mon Sep 17 00:00:00 2001 +From: Sebastian Pipping <sebastian@pipping.org> +Date: Mon, 19 Aug 2024 22:34:13 +0200 +Subject: [PATCH] lib: Detect integer overflow in dtdCopy + +Reported by TaiYou +--- + expat/lib/xmlparse.c | 10 ++++++++++ + 1 file changed, 10 insertions(+) + +diff --git a/lib/xmlparse.c b/lib/xmlparse.c +index 91682c188..e2327bdcf 100644 +--- a/lib/xmlparse.c ++++ b/lib/xmlparse.c +@@ -7016,6 +7016,16 @@ dtdCopy(XML_Parser oldParser, DTD *newDtd, const DTD *oldDtd, + if (! newE) + return 0; + if (oldE->nDefaultAtts) { ++ /* Detect and prevent integer overflow. ++ * The preprocessor guard addresses the "always false" warning ++ * from -Wtype-limits on platforms where ++ * sizeof(int) < sizeof(size_t), e.g. on x86_64. */ ++#if UINT_MAX >= SIZE_MAX ++ if ((size_t)oldE->nDefaultAtts ++ > ((size_t)(-1) / sizeof(DEFAULT_ATTRIBUTE))) { ++ return 0; ++ } ++#endif + newE->defaultAtts + = ms->malloc_fcn(oldE->nDefaultAtts * sizeof(DEFAULT_ATTRIBUTE)); + if (! newE->defaultAtts) { |