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authorAnders Kaseorg <andersk@mit.edu>2020-01-01 16:29:34 -0800
committerFrederik Rietdijk <freddyrietdijk@fridh.nl>2020-01-15 09:47:03 +0100
commit3cd8ce3bce1e3d89b21caa0d3ad458193f5179ba (patch)
tree7a1f1889004dce271903d69dce5c1f5a2cf92b07 /pkgs/development/compilers/llvm/8/llvm.nix
parent2e5051e2235f93829f0d6531ace21e87f2a486a4 (diff)
treewide: Fix unsafe concatenation of $LD_LIBRARY_PATH
Naive concatenation of $LD_LIBRARY_PATH can result in an empty
colon-delimited segment; this tells glibc to load libraries from the
current directory, which is definitely wrong, and may be a security
vulnerability if the current directory is untrusted.  (See #67234, for
example.)  Fix this throughout the tree.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>
Diffstat (limited to 'pkgs/development/compilers/llvm/8/llvm.nix')
-rw-r--r--pkgs/development/compilers/llvm/8/llvm.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/compilers/llvm/8/llvm.nix b/pkgs/development/compilers/llvm/8/llvm.nix
index 18946f5d640bf..a9c4a6b0ba25e 100644
--- a/pkgs/development/compilers/llvm/8/llvm.nix
+++ b/pkgs/development/compilers/llvm/8/llvm.nix
@@ -117,7 +117,7 @@ in stdenv.mkDerivation ({
   '';
 
   preCheck = ''
-    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$PWD/lib
+    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH''${LD_LIBRARY_PATH:+:}$PWD/lib
   '';
 
   postInstall = ''