Open
Conversation
yonas
pushed a commit
that referenced
this pull request
Apr 9, 2026
Fixes a segfault when reading `.fd` on the result of `Bun.listen({ tls:
{ ... } })`.
`Listener.getFD` was calling `uws_listener.socket(true).fd()` for TLS
listeners. For `is_ssl=true`, the uSockets wrapper
`us_internal_ssl_socket_get_native_handle` returns `s->ssl`, and `fd()`
then calls `SSL_get_fd()` on it. But a listen socket has no SSL object —
SSL is per-connection — so `s->ssl` is uninitialized memory (ASAN poison
`0xbebebe...`) and the call segfaults.
Listen sockets always have a plain poll fd regardless of TLS, so get it
via the non-SSL path.
```
#3 SSL_get_rfd (ssl=0xbebebe0000000018)
#4 SSL_get_fd (ssl=0xbebebe0000000018)
#5 deps.uws.socket.NewSocketHandler(true).fd () at src/deps/uws/socket.zig:283
bun.js.api.bun.socket.Listener.getFD at src/bun.js/api/bun/socket/Listener.zig:532
```
Repro (also triggered when `console.log()` introspects the listener):
```js
const s = Bun.listen({
hostname: "localhost", port: 0,
socket: { data(){}, open(){}, close(){} },
tls: { passphrase: "abc" },
});
console.log(s.fd);
```
Found by Fuzzilli.
---------
Co-authored-by: robobun <robobun@users.noreply.github.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
What does this PR do?
Updates libarchive to version v3.8.5
Compare: libarchive/libarchive@9525f90...dd897a7
Auto-updated by this workflow