glibc: 2.30 -> 2.31

https://lists.gnu.org/archive/html/info-gnu/2020-02/msg00001.html

pkgs/development/libraries/glibc/2.27-CVE-2019-19126.patch

@@ -1,18 +0,0 @@
-Adapted from https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=patch;h=4d5cfeb510125345cb41431afc9022492994cffa, omitting changes to NEWS
-diff --git a/sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h b/sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h
-index 1943691..ac694c0 100644
---- a/sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h
-+++ b/sysdeps/unix/sysv/linux/x86_64/64/dl-librecon.h
-@@ -31,7 +31,8 @@
-    environment variable, LD_PREFER_MAP_32BIT_EXEC.  */
- #define EXTRA_LD_ENVVARS \
-   case 21:								  \
--    if (memcmp (envline, "PREFER_MAP_32BIT_EXEC", 21) == 0)		  \
-+    if (!__libc_enable_secure						  \
-+	&& memcmp (envline, "PREFER_MAP_32BIT_EXEC", 21) == 0)		  \
-       GLRO(dl_x86_cpu_features).feature[index_arch_Prefer_MAP_32BIT_EXEC] \
- 	|= bit_arch_Prefer_MAP_32BIT_EXEC;				  \
-     break;
--- 
-2.9.3
-

pkgs/development/libraries/glibc/common.nix

@@ -36,9 +36,9 @@
 } @ args:
 
 let
-  version = "2.30";
+  version = "2.31";
   patchSuffix = "";
-  sha256 = "1bxqpg91d02qnaz837a5kamm0f43pr1il4r9pknygywsar713i72";
+  sha256 = "05zxkyz9bv3j9h0xyid1rhvh3klhsmrpkf3bcs6frvlgyr2gwilj";
 in
 
 assert withLinuxHeaders -> linuxHeaders != null;
@@ -108,8 +108,6 @@ stdenv.mkDerivation ({
       })
 
       ./fix-x64-abi.patch
-      ./2.27-CVE-2019-19126.patch
-      ./2.30-cve-2020-1752.patch
     ]
     ++ lib.optional stdenv.hostPlatform.isMusl ./fix-rpc-types-musl-conflicts.patch
     ++ lib.optional stdenv.buildPlatform.isDarwin ./darwin-cross-build.patch;