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| author | Michal Sekletar <msekleta@redhat.com> | 2024-10-30 14:55:09 +0100 |
|---|---|---|
| committer | Luca Boccassi <luca.boccassi@gmail.com> | 2024-10-30 20:45:31 +0100 |
| commit | d9fd1d37079b7e439d2a1a12994bdbc106015d03 (patch) | |
| tree | 41409a74291385279b962eae7e0f93efa74d4d2f /src | |
| parent | network/tunnel: reuse existing 6rd sit tunnel (#34938) (diff) | |
| download | systemd-d9fd1d37079b7e439d2a1a12994bdbc106015d03.tar.xz systemd-d9fd1d37079b7e439d2a1a12994bdbc106015d03.zip | |
coredump: allow only empty messages after first "sentinel"
Diffstat (limited to 'src')
| -rw-r--r-- | src/coredump/coredump.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/coredump/coredump.c b/src/coredump/coredump.c index 209d2548c2..dc725d1b22 100644 --- a/src/coredump/coredump.c +++ b/src/coredump/coredump.c @@ -1151,8 +1151,14 @@ static int process_socket(int fd) { r = log_error_errno(SYNTHETIC_ERRNO(EBADMSG), "Received unexpected file descriptors."); goto finish; - } else - cmsg_close_all(&mh); + } + cmsg_close_all(&mh); + + /* Only zero length messages are allowed after the first message that carried a file descriptor. */ + if (!first) { + r = log_error_errno(SYNTHETIC_ERRNO(EBADMSG), "Received unexpected message with non zero length."); + goto finish; + } /* Add trailing NUL byte, in case these are strings */ ((char*) iovec.iov_base)[n] = 0; |