diff options
Diffstat (limited to 'poky/meta/recipes-core/libxml/libxml2/CVE-2023-29469.patch')
-rw-r--r-- | poky/meta/recipes-core/libxml/libxml2/CVE-2023-29469.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/poky/meta/recipes-core/libxml/libxml2/CVE-2023-29469.patch b/poky/meta/recipes-core/libxml/libxml2/CVE-2023-29469.patch new file mode 100644 index 0000000000..f60d160c49 --- /dev/null +++ b/poky/meta/recipes-core/libxml/libxml2/CVE-2023-29469.patch @@ -0,0 +1,42 @@ +From 547edbf1cbdccd46b2e8ff322a456eaa5931c5df Mon Sep 17 00:00:00 2001 +From: Nick Wellnhofer <wellnhofer@aevum.de> +Date: Fri, 7 Apr 2023 11:49:27 +0200 +Subject: [PATCH] [CVE-2023-29469] Hashing of empty dict strings isn't + deterministic + +When hashing empty strings which aren't null-terminated, +xmlDictComputeFastKey could produce inconsistent results. This could +lead to various logic or memory errors, including double frees. + +For consistency the seed is also taken into account, but this shouldn't +have an impact on security. + +Found by OSS-Fuzz. + +Fixes #510. + +CVE: CVE-2023-29469 +Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/-/commit/547edbf1cbdccd46b2e8ff322a456eaa5931c5df] + +Signed-off-by: Peter Marko <peter.marko@siemens.com> +--- + dict.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +diff --git a/dict.c b/dict.c +index 86c3f6d7..d7fd1a06 100644 +--- a/dict.c ++++ b/dict.c +@@ -433,7 +433,8 @@ static unsigned long + xmlDictComputeFastKey(const xmlChar *name, int namelen, int seed) { + unsigned long value = seed; + +- if (name == NULL) return(0); ++ if ((name == NULL) || (namelen <= 0)) ++ return(value); + value += *name; + value <<= 5; + if (namelen > 10) { +-- +GitLab + |