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-rw-r--r--package/tmux/0001-Do-not-write-after-the-end-of-the-array-and-overwrit.patch35
1 files changed, 35 insertions, 0 deletions
diff --git a/package/tmux/0001-Do-not-write-after-the-end-of-the-array-and-overwrit.patch b/package/tmux/0001-Do-not-write-after-the-end-of-the-array-and-overwrit.patch
new file mode 100644
index 0000000000..d169322ed7
--- /dev/null
+++ b/package/tmux/0001-Do-not-write-after-the-end-of-the-array-and-overwrit.patch
@@ -0,0 +1,35 @@
+From a868bacb46e3c900530bed47a1c6f85b0fbe701c Mon Sep 17 00:00:00 2001
+From: nicm <nicm>
+Date: Thu, 29 Oct 2020 16:33:01 +0000
+Subject: [PATCH] Do not write after the end of the array and overwrite the
+ stack when colon-separated SGR sequences contain empty arguments. Reported by
+ Sergey Nizovtsev.
+
+[Peter: Fixes CVE-2020-27347]
+Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
+---
+ input.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/input.c b/input.c
+index 42a60c92..c280c0d9 100644
+--- a/input.c
++++ b/input.c
+@@ -1976,8 +1976,13 @@ input_csi_dispatch_sgr_colon(struct input_ctx *ictx, u_int i)
+ free(copy);
+ return;
+ }
+- } else
++ } else {
+ n++;
++ if (n == nitems(p)) {
++ free(copy);
++ return;
++ }
++ }
+ log_debug("%s: %u = %d", __func__, n - 1, p[n - 1]);
+ }
+ free(copy);
+--
+2.20.1
+