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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-04-14 08:22:40 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-04-14 08:22:40 -0300 |
| commit | 05fe3ecffff485032e904f0a3ea709e24d9188eb (patch) | |
| tree | 92516ab41f37af31dd2d33217e1547e4333701ec | |
| parent | 801deb07f6ecc6a3c8933cffc23d4b3a895259e1 (diff) | |
| download | glibc-05fe3ecffff485032e904f0a3ea709e24d9188eb.tar.gz glibc-05fe3ecffff485032e904f0a3ea709e24d9188eb.tar.xz glibc-05fe3ecffff485032e904f0a3ea709e24d9188eb.zip | |
malloc: Assure that THP mode read do write OOB end of stringt
| -rw-r--r-- | sysdeps/unix/sysv/linux/malloc-hugepages.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/malloc-hugepages.c b/sysdeps/unix/sysv/linux/malloc-hugepages.c index 740027ebfb..2f316474c1 100644 --- a/sysdeps/unix/sysv/linux/malloc-hugepages.c +++ b/sysdeps/unix/sysv/linux/malloc-hugepages.c @@ -61,6 +61,8 @@ __malloc_thp_mode (void) char str[sizeof(mode_always)]; ssize_t s = __read_nocancel (fd, str, sizeof (str)); + if (s >= sizeof str || s < 0) + return malloc_thp_mode_not_supported; str[s] = '\0'; __close_nocancel (fd); |