From: Andreas Schwab <schwab@suse.de>
Date: Wed, 25 Sep 2024 09:49:30 +0000 (+0200)
Subject: Fix missing randomness in __gen_tempname (bug 32214)
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=473597d8167f86afee3544215db108b170ec13c0;p=thirdparty%2Fglibc.git

Fix missing randomness in __gen_tempname (bug 32214)

Make sure to update the random value also if getrandom fails.

Fixes: 686d542025 ("posix: Sync tempname with gnulib")
(cherry picked from commit 5f62cf88c4530c11904482775b7582bd7f6d80d2)
---

diff --git a/NEWS b/NEWS
index 97a1e1f5d4..57feba81cd 100644
--- a/NEWS
+++ b/NEWS
@@ -18,6 +18,7 @@ The following bugs are resolved with this release:
   [32026] strerror/strsignal TLS not handled correctly for secondary namespaces
   [32052] Name space violation in fortify wrappers
   [32137] libio: Attempt wide backup free only for non-legacy code
+  [32214] Fix missing randomness in __gen_tempname
   [32231] elf: Change ldconfig auxcache magic number
   [32245] glibc -Wstringop-overflow= build failure on hppa
   [32470] x86: Avoid integer truncation with large cache sizes
diff --git a/sysdeps/posix/tempname.c b/sysdeps/posix/tempname.c
index c00fe0c181..fc30958a0c 100644
--- a/sysdeps/posix/tempname.c
+++ b/sysdeps/posix/tempname.c
@@ -117,6 +117,8 @@ random_bits (random_value *r, random_value s)
      succeed.  */
 #if !_LIBC
   *r = mix_random_values (v, clock ());
+#else
+  *r = v;
 #endif
   return false;
 }