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| author | Sergey Bugaev <bugaevc@gmail.com> | 2023-04-19 19:02:03 +0300 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2023-04-22 13:50:14 +0200 |
| commit | 533deafbdf189f5fbb280c28562dd43ace2f4b0f (patch) | |
| tree | 292d1cf07d52199a9dd247c6bb06f5566c218855 /elf | |
| parent | 28a441cc577e31e95742b9ec5f1737b86749b712 (diff) | |
| download | glibc-533deafbdf189f5fbb280c28562dd43ace2f4b0f.zip glibc-533deafbdf189f5fbb280c28562dd43ace2f4b0f.tar.gz glibc-533deafbdf189f5fbb280c28562dd43ace2f4b0f.tar.bz2 | |
Use O_CLOEXEC in more places (BZ #15722)
When opening a temporary file without O_CLOEXEC we risk leaking the
file descriptor if another thread calls (fork and then) exec while we
have the fd open. Fix this by consistently passing O_CLOEXEC everywhere
where we open a file for internal use (and not to return it to the user,
in which case the API defines whether or not the close-on-exec flag
shall be set on the returned fd).
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
Message-Id: <20230419160207.65988-4-bugaevc@gmail.com>
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/dl-profile.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/elf/dl-profile.c b/elf/dl-profile.c index 2ecac05..d8345da 100644 --- a/elf/dl-profile.c +++ b/elf/dl-profile.c @@ -324,7 +324,8 @@ _dl_start_profile (void) *cp++ = '/'; __stpcpy (__stpcpy (cp, GLRO(dl_profile)), ".profile"); - fd = __open64_nocancel (filename, O_RDWR|O_CREAT|O_NOFOLLOW, DEFFILEMODE); + fd = __open64_nocancel (filename, O_RDWR | O_CREAT | O_NOFOLLOW + | O_CLOEXEC, DEFFILEMODE); if (fd == -1) { char buf[400]; |