diff options
| author | dzwdz | 2023-06-17 22:19:36 +0200 |
|---|---|---|
| committer | dzwdz | 2023-06-17 23:39:27 +0200 |
| commit | b528a54a708c4cd2149c8e6884af2063c2b272cd (patch) | |
| tree | ded8aff45f2d5e7f08eb68f710edc7b9b164d5a2 /src/kernel/vfs/request.c | |
| parent | 8929eb838bec8d3f5eb0d5a1c6b91a4f27d0baff (diff) | |
kernel: fix procfs overflow bug, add safeguard to prevent similar ones
Diffstat (limited to 'src/kernel/vfs/request.c')
| -rw-r--r-- | src/kernel/vfs/request.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/kernel/vfs/request.c b/src/kernel/vfs/request.c index 410e41e..5723201 100644 --- a/src/kernel/vfs/request.c +++ b/src/kernel/vfs/request.c @@ -73,6 +73,10 @@ void vfsreq_finish(VfsReq *req, char __user *stored, long ret, } } + if (req->type == VFSOP_READ && ret >= 0) { + assert((size_t)ret <= req->output.len); + } + if (req->input.kern) kfree(req->input.buf_kern); |