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| author | Yu Watanabe <watanabe.yu+github@gmail.com> | 2020-09-09 00:07:50 +0900 |
|---|---|---|
| committer | Yu Watanabe <watanabe.yu+github@gmail.com> | 2020-09-09 06:39:05 +0900 |
| commit | 1263c85ef32ea35969748cd4304cd1a51d19e8d1 (patch) | |
| tree | 5d20e2d5678bae4423d91213d553a9b58d617cbe /src/basic/socket-util.c | |
| parent | 8c63924c8d1eeb5a173669b8b06230bfe721f139 (diff) | |
| download | systemd-1263c85ef32ea35969748cd4304cd1a51d19e8d1.tar.gz | |
util: refuse to set too large value for socket buffer size
Diffstat (limited to 'src/basic/socket-util.c')
| -rw-r--r-- | src/basic/socket-util.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/basic/socket-util.c b/src/basic/socket-util.c index fb12659857..3230d76b02 100644 --- a/src/basic/socket-util.c +++ b/src/basic/socket-util.c @@ -621,6 +621,9 @@ int fd_inc_sndbuf(int fd, size_t n) { int r, value; socklen_t l = sizeof(value); + if (n > INT_MAX) + return -ERANGE; + r = getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, &l); if (r >= 0 && l == sizeof(value) && (size_t) value >= n*2) return 0; @@ -640,6 +643,9 @@ int fd_inc_rcvbuf(int fd, size_t n) { int r, value; socklen_t l = sizeof(value); + if (n > INT_MAX) + return -ERANGE; + r = getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, &l); if (r >= 0 && l == sizeof(value) && (size_t) value >= n*2) return 0; |