From 1ae04e35111f1455134943ee098f39e55aebc3eb Mon Sep 17 00:00:00 2001
From: Leo Famulari <leo@famulari.name>
Date: Mon, 13 Feb 2017 17:31:23 -0500
Subject: gnu: vim: Fix CVE-2017-5953.

* gnu/packages/patches/vim-CVE-2017-5953.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/vim.scm (vim)[source]: Use it.
---
 gnu/packages/patches/vim-CVE-2017-5953.patch | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 gnu/packages/patches/vim-CVE-2017-5953.patch

(limited to 'gnu/packages/patches/vim-CVE-2017-5953.patch')

diff --git a/gnu/packages/patches/vim-CVE-2017-5953.patch b/gnu/packages/patches/vim-CVE-2017-5953.patch
new file mode 100644
index 0000000000..7b66f1bf16
--- /dev/null
+++ b/gnu/packages/patches/vim-CVE-2017-5953.patch
@@ -0,0 +1,24 @@
+Fix CVE-2017-5953:
+
+https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5953
+https://groups.google.com/forum/#!topic/vim_dev/t-3RSdEnrHY
+
+Patch adapted from upstream commit, correcting the transcription error
+in the bounds check:
+
+https://github.com/vim/vim/commit/399c297aa93afe2c0a39e2a1b3f972aebba44c9d
+
+diff --git a/src/spellfile.c b/src/spellfile.c
+index c7d87c6..8b1a3a6 100644
+--- a/src/spellfile.c
++++ b/src/spellfile.c
+@@ -1595,6 +1595,9 @@ spell_read_tree(
+     len = get4c(fd);
+     if (len < 0)
+ 	return SP_TRUNCERROR;
++    if (len >= 0x3fffffff)
++	/* Invalid length, multiply with sizeof(int) would overflow. */
++	return SP_FORMERROR;
+     if (len > 0)
+     {
+ 	/* Allocate the byte array. */
-- 
cgit v1.2.3