From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Wed, 12 Apr 2023 12:36:54 +0000 (-0300)
Subject: malloc: Assure that THP mode is always null terminated
X-Git-Tag: glibc-2.38~375
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=801deb07f6ecc6a3c8933cffc23d4b3a895259e1;p=thirdparty%2Fglibc.git

malloc: Assure that THP mode is always null terminated
---

diff --git a/sysdeps/unix/sysv/linux/malloc-hugepages.c b/sysdeps/unix/sysv/linux/malloc-hugepages.c
index 683d68c3275..740027ebfb0 100644
--- a/sysdeps/unix/sysv/linux/malloc-hugepages.c
+++ b/sysdeps/unix/sysv/linux/malloc-hugepages.c
@@ -61,6 +61,7 @@ __malloc_thp_mode (void)
 
   char str[sizeof(mode_always)];
   ssize_t s = __read_nocancel (fd, str, sizeof (str));
+  str[s] = '\0';
   __close_nocancel (fd);
 
   if (s == sizeof (mode_always) - 1)