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authorwenlin.kang@windriver.com <wenlin.kang@windriver.com>2020-09-15 19:48:25 -0700
committerAnuj Mittal <anuj.mittal@intel.com>2020-11-23 14:11:22 +0800
commit6d31f37b9a407a6487693bb81267758fa33bf169 (patch)
tree660fefd68f928b883f8d812c0b59aa6edac8939f
parentdb8ceed8f2eca92a4cffe8295481d8041281fdd0 (diff)
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nasm: fix CVE-2020-24978
Fix CVE-2020-24978 Signed-off-by: Wenlin Kang <wenlin.kang@windriver.com> Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
-rw-r--r--meta/recipes-devtools/nasm/nasm/0001-BR3392712-pp_tokline-fix-double-free.patch36
-rw-r--r--meta/recipes-devtools/nasm/nasm_2.14.02.bb1
2 files changed, 37 insertions, 0 deletions
diff --git a/meta/recipes-devtools/nasm/nasm/0001-BR3392712-pp_tokline-fix-double-free.patch b/meta/recipes-devtools/nasm/nasm/0001-BR3392712-pp_tokline-fix-double-free.patch
new file mode 100644
index 0000000000..b2cd3fe24b
--- /dev/null
+++ b/meta/recipes-devtools/nasm/nasm/0001-BR3392712-pp_tokline-fix-double-free.patch
@@ -0,0 +1,36 @@
+From 652c58c92d9e8eaf09a0eb125c4fe2d4b6cc3397 Mon Sep 17 00:00:00 2001
+From: Cyrill Gorcunov <gorcunov@gmail.com>
+Date: Tue, 15 Sep 2020 15:50:20 +0800
+Subject: [PATCH] BR3392712: pp_tokline: fix double free
+
+Make sure the data being freed get double
+freed after -- the pointers must be zapped
+(actually nasm_free and free_tlist support
+being called with NULL pointer as an argument).
+
+Upstream-Status: Backport [https://github.com/netwide-assembler/nasm/commit/8806c3ca007b84accac21dd88b900fb03614ceb7]
+CVE: CVE-2020-24978
+
+Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
+Signed-off-by: Wenlin Kang <wenlin.kang@windriver.com>
+---
+ asm/preproc.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/asm/preproc.c b/asm/preproc.c
+index 2737ec1..da2c9c9 100644
+--- a/asm/preproc.c
++++ b/asm/preproc.c
+@@ -5119,6 +5119,9 @@ static char *pp_getline(void)
+ free_tlist(m->iline);
+ nasm_free(m->paramlen);
+ l->finishes->in_progress = 0;
++ m->params = NULL;
++ m->iline = NULL;
++ m->paramlen = NULL;
+ }
+ }
+
+--
+2.13.3
+
diff --git a/meta/recipes-devtools/nasm/nasm_2.14.02.bb b/meta/recipes-devtools/nasm/nasm_2.14.02.bb
index bd4ecea8b6..bb2b58f87e 100644
--- a/meta/recipes-devtools/nasm/nasm_2.14.02.bb
+++ b/meta/recipes-devtools/nasm/nasm_2.14.02.bb
@@ -6,6 +6,7 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=90904486f8fbf1861cf42752e1a39efe"
SRC_URI = "http://www.nasm.us/pub/nasm/releasebuilds/${PV}/nasm-${PV}.tar.bz2 \
file://CVE-2018-19755.patch \
file://CVE-2019-14248.patch \
+ file://0001-BR3392712-pp_tokline-fix-double-free.patch \
"
SRC_URI[md5sum] = "3f489aa48ad2aa1f967dc5e293bbd06f"