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4e56c5c956fbac7319592c959980a10f9109979f
libssh/src
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Jakub Jelen 4e56c5c956 poll: Avoid passing other events to callbacks when called recursively 
Some architectures (s390x) provide different poll events such as POLLHUP in case
the remote end closed the connection (and they keep reporting this forever).

This is an issue when the user provided callback registering this event as an
error and tries to send some reply (for example EOF) using
`ssh_channel_send_eof()` which will lead to infinite recursion and sefgaults.

This was not solved by the 30b5a2e33b because the
POLLHUP event is not provided by the poll in events bitfield, but only reported
by the poll in revents bit field thus we need to filter these events later on
when the poll is recursively.

Fixes #202

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
2023-09-13 14:10:30 +02:00
..
ABI
API: Bump SO version to 4.9.0
2022-07-02 07:04:48 +02:00
external
Fix various spelling issues reported by codespell
2022-10-12 13:50:38 +02:00
threads
threads/libcrypto.c: Remove no longer supported openssl versions
2022-10-31 16:33:44 +01:00
agent.c
agent: Avoid memory leaks
2023-05-04 16:55:17 +02:00
auth.c
auth: Avoid memory leaks during agent authentication
2023-05-04 16:55:17 +02:00
base64.c
base64: Use SSH_BUFFER_FREE()
2019-12-09 16:08:03 +01:00
bignum.c
crypto: Add ssh_crypto_free().
2023-08-25 15:13:31 +02:00
bind_config.c
SSH_LOG_DEBUG: Recategorize loglevels
2022-10-07 09:13:19 +02:00
bind.c
Remove support for DSA Keys
2023-02-02 14:49:06 +01:00
buffer.c
buffer.c: Fix null pointer dereference error
2023-05-04 11:51:17 +02:00
callbacks.c
callbacks: Implement list of callbacks for channels
2016-05-02 16:56:54 +02:00
chachapoly.c
Fix multiple spelling and grammar mistakes
2022-05-02 19:05:51 +02:00
channels.c
Allow sending data payloads of remote_maxpacket length.
2023-09-08 08:48:40 +02:00
client.c
CVE-2023-1667:kex: Add support for sending first_kex_packet_follows flag
2023-05-04 11:51:17 +02:00
CMakeLists.txt
cmake: Return back the DEFAULT_C_COMPILE_FLAGS
2023-04-14 19:11:24 +02:00
config_parser.c
solve incorrect parsing of the ProxyCommand configuration option
2023-04-25 18:01:31 +02:00
config.c
add control master and path option
2023-08-02 15:37:17 +02:00
connect.c
priv.h : Add compatibility code for Windows
2023-07-11 17:47:34 +02:00
connector.c
priv.h : Add compatibility code for Windows
2023-07-11 17:47:34 +02:00
crypto_common.c
crypto: Use stdint types and make code more readable of secure_memcmp()
2022-06-20 09:18:59 +02:00
curve25519.c
CVE-2023-1667:dh: Expose the callback cleanup functions
2023-05-04 11:51:17 +02:00
dh_crypto.c
Fix memory leaks of bignums when openssl >= 3.0
2022-11-29 14:16:01 +01:00
dh_key.c
Fix various spelling issues reported by codespell
2022-10-12 13:50:38 +02:00
dh-gex.c
CVE-2023-1667:dh: Expose the callback cleanup functions
2023-05-04 11:51:17 +02:00
dh.c
CVE-2023-1667:dh: Expose the callback cleanup functions
2023-05-04 11:51:17 +02:00
ecdh_crypto.c
ecdh_crypto: Avoid memory leak on error condition
2023-06-28 12:25:58 +02:00
ecdh_gcrypt.c
Remove support for DSA Keys
2023-02-02 14:49:06 +01:00
ecdh_mbedcrypto.c
SSH_LOG_DEBUG: Recategorize loglevels
2022-10-07 09:13:19 +02:00
ecdh.c
CVE-2023-1667:dh: Expose the callback cleanup functions
2023-05-04 11:51:17 +02:00
error.c
SSH_LOG_TRACE: Recategorize loglevels
2022-10-07 09:13:19 +02:00
gcrypt_missing.c
crypto: Add ssh_crypto_free().
2023-08-25 15:13:31 +02:00
getpass.c
Reformat most of the function headers
2022-06-09 09:08:02 +02:00
getrandom_crypto.c
getrandom_crypto.c: Add function to the documentation
2022-09-29 11:12:55 +02:00
getrandom_gcrypt.c
Build external override library with all symbols
2022-07-19 15:21:50 +02:00
getrandom_mbedcrypto.c
Build external override library with all symbols
2022-07-19 15:21:50 +02:00
gssapi.c
gssapi: Rewrite allocation check to avoid zero_structpt
2023-07-11 17:45:39 +02:00
gzip.c
Reformat gzip.c
2023-01-09 22:40:10 +01:00
init.c
Add missing includes for fprintf()
2022-11-23 15:29:29 +01:00
kdf.c
kdf: Avoid endianess issues
2022-09-07 14:37:29 +02:00
kex.c
kex: Avoid NULL pointer dereference (GHSL-2023-032)
2023-05-04 11:51:17 +02:00
known_hosts.c
Remove support for DSA Keys
2023-02-02 14:49:06 +01:00
knownhosts.c
Remove support for DSA Keys
2023-02-02 14:49:06 +01:00
legacy.c
Remove support for DSA Keys
2023-02-02 14:49:06 +01:00
libcrypto-compat.h
Move old DSA and RSA structs into EVP_PKEY
2022-12-20 10:07:27 +01:00
libcrypto.c
Add support for PKCS#11 provider in OpenSSL 3.0
2023-03-01 11:35:28 +01:00
libgcrypt.c
libgcrypt.c: Fix type mismatches
2023-06-02 13:41:54 +02:00
libmbedcrypto.c
Fix various spelling issues reported by codespell
2022-10-12 13:50:38 +02:00
libssh.map
Remove needless new symbols and add required to API
2023-06-06 10:54:31 +02:00
log.c
log.c: Remove dot from documentation group definition
2022-09-29 11:13:46 +02:00
match.c
Fix type mismatch warnings
2022-06-15 14:47:06 +02:00
mbedcrypto_missing.c
crypto: Add ssh_crypto_free().
2023-08-25 15:13:31 +02:00
mbedcrypto-compat.h
Fix mbedTLS issues caused by v3 API changes
2022-07-04 08:52:18 +02:00
md_crypto.c
Move digest functions into separate file
2022-07-19 15:21:50 +02:00
md_gcrypt.c
Move digest functions into separate file
2022-07-19 15:21:50 +02:00
md_mbedcrypto.c
Move digest functions into separate file
2022-07-19 15:21:50 +02:00
messages.c
handle no-more-sessions in server
2023-04-28 10:58:11 +02:00
misc.c
misc.c : Introduce ssh_writen()
2023-08-22 14:22:14 +02:00
options.c
add control master and path option
2023-08-02 15:37:17 +02:00
packet_cb.c
auth.c: Add termination when server disconnects during authentication
2023-05-29 14:04:03 +02:00
packet_crypt.c
packet: Check hmac return codes in ssh_packet_hmac_verify()
2022-07-14 13:09:25 +02:00
packet.c
Revert the control flow callback in commit
2023-09-08 08:51:45 +02:00
pcap.c
pcap: Reformat
2023-07-11 17:45:31 +02:00
pki_container_openssh.c
Add missing return value check
2023-05-04 11:51:17 +02:00
pki_crypto.c
pki_crypto: Fix ecdsa memory leak
2023-05-09 09:07:16 +02:00
pki_ed25519_common.c
pki_ed25519_common.c: Change function parameter name
2022-11-02 12:17:21 +01:00
pki_ed25519.c
unsorted formatting cleanup
2022-05-10 12:39:26 +02:00
pki_gcrypt.c
Remove support for DSA Keys
2023-02-02 14:49:06 +01:00
pki_mbedcrypto.c
Remove support for DSA Keys
2023-02-02 14:49:06 +01:00
pki.c
priv.h : Add compatibility code for Windows
2023-07-11 17:47:34 +02:00
poll.c
poll: Avoid passing other events to callbacks when called recursively
2023-09-13 14:10:30 +02:00
scp.c
scp: Make sure arguments are sane
2023-06-28 12:22:27 +02:00
server.c
CVE-2023-1667:kex: Correctly handle last fields of KEXINIT also in the client side
2023-05-04 11:51:17 +02:00
session.c
add control master and path option
2023-08-02 15:37:17 +02:00
sftp.c
sftp: Check return value of ssh_buffer_add_data
2023-06-22 17:29:39 +02:00
sftpserver.c
sftpserver: Add missing allocation check that might cause NULL dereference
2023-07-11 17:45:45 +02:00
socket.c
priv.h : Add compatibility code for Windows
2023-07-11 17:47:34 +02:00
string.c
Fix multiple spelling and grammar mistakes
2022-05-02 19:05:51 +02:00
threads.c
threads.c: Remove dot from documentation group definition
2022-10-04 10:35:02 +02:00
token.c
CVE-2023-1667:token: Add missing whitespace
2023-05-04 11:51:17 +02:00
wrapper.c
wrapper: Reformat crypto_new
2023-05-04 11:51:17 +02:00