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channels: add NULL session check in ssh_channel_is_open

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Prevent potential NULL pointer dereference when accessing
channel->session->alive.

Signed-off-by: Manas Trivedi <manas.trivedi.020@gmail.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
This commit is contained in:
Manas Trivedi
2026-03-20 18:06:23 +00:00
committed by Jakub Jelen
parent f060583d6f
commit 34bbb48561
1 changed files with 1 additions and 1 deletions
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2
src/channels.c
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@@ -1738,7 +1738,7 @@ int ssh_channel_write(ssh_channel channel, const void *data, uint32_t len)
*/
int ssh_channel_is_open(ssh_channel channel)
{
if (channel == NULL) {
if (channel == NULL || channel->session == NULL) {
return 0;
}
return (channel->state == SSH_CHANNEL_STATE_OPEN && channel->session->alive != 0);