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authorScott Murray <scott.murray@konsulko.com>2020-12-30 17:44:18 -0500
committerSteve Sakoman <steve@sakoman.com>2021-01-04 04:50:23 -1000
commitaf4fbea9a1656bdf95d85831cae13cae3a60d5ee (patch)
treea957a7c4c34c6481a116ca3963f7a5c85ec46063
parentd686a3eb928d316a4e53979fda48b205ba9104bc (diff)
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patch: fix CVE-2019-20633
* CVE detail: https://nvd.nist.gov/vuln/detail/CVE-2019-20633 * upstream tracking: https://savannah.gnu.org/bugs/index.php?56683 * Fixes potential for double free after incomplete fix for CVE-2018-6952 - src/pch.c (another_hunk): Avoid invalid memory access in context format diffs. Signed-off-by: Scott Murray <scott.murray@konsulko.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> (cherry picked from commit be71dd2cc16a4c0d244a76a748f08ca0d9bfeba0) Signed-off-by: Steve Sakoman <steve@sakoman.com>
-rw-r--r--meta/recipes-devtools/patch/patch/CVE-2019-20633.patch31
-rw-r--r--meta/recipes-devtools/patch/patch_2.7.6.bb1
2 files changed, 32 insertions, 0 deletions
diff --git a/meta/recipes-devtools/patch/patch/CVE-2019-20633.patch b/meta/recipes-devtools/patch/patch/CVE-2019-20633.patch
new file mode 100644
index 0000000000..03988a179c
--- /dev/null
+++ b/meta/recipes-devtools/patch/patch/CVE-2019-20633.patch
@@ -0,0 +1,31 @@
+From 15b158db3ae11cb835f2eb8d2eb48e09d1a4af48 Mon Sep 17 00:00:00 2001
+From: Andreas Gruenbacher <agruen@gnu.org>
+Date: Mon, 15 Jul 2019 19:10:02 +0200
+Subject: Avoid invalid memory access in context format diffs
+
+* src/pch.c (another_hunk): Avoid invalid memory access in context format
+diffs.
+
+CVE: CVE-2019-20633
+Upstream-Status: Backport[https://git.savannah.gnu.org/cgit/patch.git/patch/?id=15b158db3ae11cb835f2eb8d2eb48e09d1a4af48]
+Signed-off-by: Scott Murray <scott.murray@konsulko.com>
+
+---
+ src/pch.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/pch.c b/src/pch.c
+index a500ad9..cb54e03 100644
+--- a/src/pch.c
++++ b/src/pch.c
+@@ -1328,6 +1328,7 @@ another_hunk (enum diff difftype, bool rev)
+ ptrn_prefix_context = context;
+ ptrn_suffix_context = context;
+ if (repl_beginning
++ || p_end <= 0
+ || (p_end
+ != p_ptrn_lines + 1 + (p_Char[p_end - 1] == '\n')))
+ {
+--
+cgit v1.2.1
+
diff --git a/meta/recipes-devtools/patch/patch_2.7.6.bb b/meta/recipes-devtools/patch/patch_2.7.6.bb
index b5897b357a..1997af0c25 100644
--- a/meta/recipes-devtools/patch/patch_2.7.6.bb
+++ b/meta/recipes-devtools/patch/patch_2.7.6.bb
@@ -10,6 +10,7 @@ SRC_URI += "file://0001-Unset-need_charset_alias-when-building-for-musl.patch \
file://0001-Invoke-ed-directly-instead-of-using-the-shell.patch \
file://0001-Don-t-leak-temporary-file-on-failed-ed-style-patch.patch \
file://0001-Don-t-leak-temporary-file-on-failed-multi-file-ed.patch \
+ file://CVE-2019-20633.patch \
"
SRC_URI[md5sum] = "4c68cee989d83c87b00a3860bcd05600"