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NBD patches for 2024-08-26

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- One more patch for CVE-2024-7409 (use-after-free on nbd-server-stop)
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Merge tag 'pull-nbd-2024-08-26' of https://repo.or.cz/qemu/ericb into staging

NBD patches for 2024-08-26

- One more patch for CVE-2024-7409 (use-after-free on nbd-server-stop)

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# gpg: Signature made Mon 26 Aug 2024 11:49:07 PM AEST
# gpg:                using RSA key 71C2CC22B1C4602927D2F3AAA7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>" [full]
# gpg:                 aka "[jpeg image of size 6874]" [full]

* tag 'pull-nbd-2024-08-26' of https://repo.or.cz/qemu/ericb:
  nbd/server: CVE-2024-7409: Avoid use-after-free when closing server

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2024-08-27 07:06:42 +10:00
commit afaee42f77
1 changed files with 8 additions and 4 deletions
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12
blockdev-nbd.c
View File

@ -92,10 +92,13 @@ static void nbd_accept(QIONetListener *listener, QIOChannelSocket *cioc,
static void nbd_update_server_watch(NBDServerData *s)
{
if (!s->max_connections || s->connections < s->max_connections) {
qio_net_listener_set_client_func(s->listener, nbd_accept, NULL, NULL);
} else {
qio_net_listener_set_client_func(s->listener, NULL, NULL, NULL);
if (s->listener) {
if (!s->max_connections || s->connections < s->max_connections) {
qio_net_listener_set_client_func(s->listener, nbd_accept, NULL,
NULL);
} else {
qio_net_listener_set_client_func(s->listener, NULL, NULL, NULL);
}
}
}
@ -113,6 +116,7 @@ static void nbd_server_free(NBDServerData *server)
*/
qio_net_listener_disconnect(server->listener);
object_unref(OBJECT(server->listener));
server->listener = NULL;
QLIST_FOREACH_SAFE(conn, &server->conns, next, tmp) {
qio_channel_shutdown(QIO_CHANNEL(conn->cioc), QIO_CHANNEL_SHUTDOWN_BOTH,
NULL);