HAProxy known bugs for version v2.2.29 (maintenance branch 2.2) :  151 

This version (2.2.29) is a release belonging to maintenance branch 2.2 whose latest version is 2.2.34. If your version is not the last one in the maintenance branch, you are missing fixes for known bugs, and by not updating you are needlessly taking the responsibility for the risk of unexpected service outages and exposing your web site to possible security issues.

The HAProxy development team takes a great care of maintaining stable versions so that all users can apply bug fixes without having to take the risk of upgrading to a new branch. In turn users are expected to apply the fixes when the development team estimates that they were worth being backported to stable branches.

Quick links

Other versions in the same branch

This branch contains the following releases :

DateVersionComment
2025-04-232.2.34 ⇐ last
2024-04-052.2.33 
2023-12-192.2.32 
2023-08-192.2.31 
2023-06-122.2.30 
2023-02-142.2.29 ⇐ yours
2023-01-312.2.28 
2023-01-272.2.27 
2022-12-092.2.26 
2022-07-282.2.25 
2022-05-132.2.24 
2022-05-062.2.23 
2022-03-142.2.22 
2022-03-022.2.21 
2022-01-122.2.20 
2021-11-292.2.19 
2021-11-052.2.18 
2021-09-072.2.17 
2021-08-172.2.16 
2021-07-162.2.15 
2021-04-292.2.14 
2021-04-022.2.13 
2021-03-312.2.12 
2021-03-182.2.11 
2021-03-032.2.10 
2021-02-062.2.9 
2021-01-132.2.8 
2021-01-082.2.7 
2020-11-302.2.6 
2020-11-052.2.5 
2020-09-302.2.4 
2020-09-082.2.3 
2020-07-312.2.2 
2020-07-232.2.1 
2020-07-072.2.0 

Known bugs affecting this version, and already fixed in the maintenance branch

These fixes have already been queued for a more recent 2.2 version. Some of them might have already been released in a more recent version than yours, and other ones might still be pending in the maintenance branch for a future release. The list may be empty if you're already on the latest version and no new fix was backported.

Bugs are almost always tagged with a severity (some people forget the severity tag when the bug is minor). The following severities are used :

Total known bugs in this version by category :

TotalCRITICALMAJORMEDIUMMINOR
151 0 4 54 93

Click on the subjects below to get the full description of the bug :

Merge dateSubject - Severity (minor, medium, major, critical)
2025-04-23BUG/MINOR: h2: always trim leading and trailing LWS in header values
2025-04-22BUG/MEDIUM: sample: fix risk of overflow when replacing multiple regex back-refs
2025-04-22BUG/MEDIUM: peers: prevent learning expiration too far in futur from unsync node
2025-04-22BUG/MINOR: peers: fix expire learned from a peer not converted from ms to ticks
2025-04-22BUG/MEDIUM: hlua/cli: fix cli applet UAF in hlua_applet_wakeup()
2025-04-22BUG/MINOR: namespace: handle a possible strdup() failure
2025-04-22BUG/MINOR: cfgparse: fix NULL ptr dereference in cfg_parse_peers
2025-04-22BUG/MINOR: stats-json: Define JSON_INT_MAX as a signed integer
2025-04-22BUG/MINOR: cli: Fix a possible infinite loop in _getsocks()
2025-04-22BUG/MINOR: fcgi: Don't set the status to 302 if it is already set
2025-04-22BUG/MEDIUM: filters: Handle filters registered on data with no payload callback
2025-04-22BUG/MINOR: cli: Wait for the last ACK when FDs are xferred from the old worker
2025-04-22BUG/MEDIUM: htx: wrong count computation in htx_xfer_blks()
2025-04-22BUG/MINOR: spoe: Allow applet creation when closing the last one during stopping
2025-04-22BUG/MINOR: spoe: Check the shared waiting queue to shut applets during stopping
2025-04-22BUG/MEDIUM: ssl: chosing correct certificate using RSA-PSS with TLSv1.3
2025-04-22BUG/MINOR: ssl: put ssl_sock_load_ca under SSL_NO_GENERATE_CERTIFICATES
2025-04-22BUG/MINOR: stktable: fix big-endian compatiblity in smp_to_stkey()
2025-04-22BUG/MINOR: signal: register default handler for SIGINT in signal_init()
2025-04-22BUG/MINOR: h1-htx: Use default reason if not set when formatting the response
2025-04-22BUG/MEDIUM: http-ana: Reset request flag about data sent to perform a L7 retry
2025-04-22BUG/MEDIUM: mux-h2: Check the number of headers in HEADERS frame after decoding
2025-04-22BUG/MEDIUM: mux-h2: Increase max number of headers when encoding HEADERS frames
2025-04-22BUG/MINOR: http_ana: Report -1 for %Tr for invalid response only
2025-04-22BUG/MINOR: peers: make sure to always apply offsets to now_ms in expiration
2025-04-22BUG/MEDIUM: checks: make sure to always apply offsets to now_ms in expiration
2025-04-22BUG/MEDIUM: mux-h2: Don't send RST_STREAM frame for streams with no ID
2025-04-22BUG/MINOR: ssl: can't load a separated key file with openssl > 3.0
2025-04-22BUG/MINOR: mworker: fix mworker-max-reloads parser
2025-04-22BUG/MINOR: cfgparse-global: fix allowed args number for setenv
2024-09-17BUG/MINOR: server: Don't warn fallback IP is used during init-addr resolution
2024-09-17BUG/MINOR: polling: fix time reporting when using busy polling
2024-09-17BUG/MINOR: trace: automatically start in waiting mode with "start "
2024-09-17BUG/MINOR: fcgi-app: handle a possible strdup() failure
2024-09-17BUG/MEDIUM: cli: Always release back endpoint between two commands on the mcli
2024-09-17BUG/MEDIUM: stream: Prevent mux upgrades if client connection is no longer ready
2024-09-17BUG/MINOR: cli: Atomically inc the global request counter between CLI commands
2024-09-17BUG/MEDIUM: spoe: Be sure to create a SPOE applet if none on the current thread
2024-07-03BUG/MINOR: hlua: report proper context upon error in hlua_cli_io_handler_fct()
2024-07-03BUG/MINOR: cfgparse: remove the correct option on httpcheck send-state warning
2024-07-03BUG/MINOR: haproxy: only tid 0 must not sleep if got signal
2024-07-03BUG/MEDIUM: http_ana: ignore NTLM for reuse aggressive/always and no H1
2024-07-03BUG/MEDIUM: ssl: wrong priority whem limiting ECDSA ciphers in ECDSA+RSA configuration
2024-07-03BUG/MINOR: tools: fix possible null-deref in env_expand() on out-of-memory
2024-07-03BUG/MINOR: tcpcheck: report correct error in tcp-check rule parser
2024-07-03BUG/MINOR: ssl/ocsp: init callback func ptr as NULL
2024-07-03BUG/MINOR: stats: Don't state the 303 redirect response is chunked
2024-07-03BUG/MINOR: htpp-ana/stats: Specify that HTX redirect messages have a C-L header
2024-07-03BUG/MEDIUM: fd: prevent memory waste in fdtab array
2024-07-03BUG/MEDIUM: htx: mark htx_sl as packed since it may be realigned
2024-07-03BUG/MINOR: h1: fix detection of upper bytes in the URI
2024-07-03BUG/MINOR: fd: my_closefrom() on Linux could skip contiguous series of sockets
2024-07-03BUG/MEDIUM: evports: do not clear returned events list on signal
2024-07-03BUG/MEDIUM: stconn: Don't forward channel data if input data must be filtered
2024-07-03BUG/MEDIUM: http-ana: Deliver 502 on keep-alive for fressh server connection
2024-07-03BUG/MINOR: log: invalid snprintf() usage in sess_build_logline()
2024-07-03BUG/MINOR: tools/log: invalid encode_{chunk,string} usage
2024-07-03BUG/MINOR: log: fix lf_text_len() truncate inconsistency
2024-04-08BUG/MEDIUM: connection: report connection errors even when no mux is installed
2024-04-04BUG/MEDIUM: spoe: Don't rely on stream's expiration to detect processing timeout
2024-04-04BUG/MINOR: backend: properly handle redispatch 0
2024-04-04BUG/MINOR: server: 'source' interface ignored from 'default-server' directive
2024-04-04BUG/MINOR: session: ensure conn owner is set after insert into session
2024-04-04BUG/MEDIUM: spoe: Return an invalid frame on recv if size is too small
2024-04-04BUG/MINOR: ssl: fix possible ctx memory leak in sample_conv_aes_gcm()
2024-04-04BUG/MINOR: cfgparse: report proper location for log-format-sd errors
2024-04-04BUG/MINOR: hlua: Fix log level to the right value when set via TXN:set_loglevel
2024-04-03BUG/MAJOR: ssl_sock: Always clear retry flags in read/write functions
2024-04-03BUG/MEDIUM: h1: always reject the NUL character in header values
2024-04-03BUG/MINOR: h1-htx: properly initialize the err_pos field
2024-04-03BUG/MEDIUM: pool: fix rare risk of deadlock in pool_flush()
2024-04-03BUG/MEDIUM: cli: some err/warn msg dumps add LR into CSV output on stat's CLI
2024-01-19BUG/MEDIUM: spoe: Never create new spoe applet if there is no server up
2024-01-19BUG/MEDIUM: stconn: Forward shutdown on write timeout only if it is forwardable
2024-01-19BUG/MEDIUM: mux-h2: Report too large HEADERS frame only when rxbuf is empty
2023-12-15BUG/MEDIUM: ssl: fix the gcc-12 broken fix :-(
2023-12-15BUG/MINOR: startup: set GTUNE_SOCKET_TRANSFER correctly
2023-12-15BUG/MINOR: sample: Make the `word` converter compatible with `-m found`
2023-12-15BUG/MEDIUM: mux-fcgi: fail earlier on malloc in takeover()
2023-12-15BUG/MEDIUM: mux-h1: fail earlier on malloc in takeover()
2023-12-15BUG/MEDIUM: mux-h2: fail earlier on malloc in takeover()
2023-12-15BUG/MINOR: stconn: Use HTX-aware channel's functions to get info on buffer
2023-12-15BUG/MINOR: stconn: Fix streamer detection for HTX streams
2023-12-15BUG/MEDIUM: stream: Don't call mux .ctl() callback if not implemented
2023-12-15BUG/MEDIUM: stream: Properly handle abortonclose when set on backend only
2023-12-15BUG/MINOR: stconn: Handle abortonclose if backend connection was already set up
2023-12-15BUG/MINOR: stick-table/cli: Check for invalid ipv4 key
2023-12-15BUG/MINOR: cfgparse/stktable: fix error message on stktable_init() failure
2023-12-15BUG/MINOR: stktable: missing free in parse_stick_table()
2023-12-15BUG/MINOR: tcpcheck: Report hexstring instead of binary one on check failure
2023-12-15BUG/MEDIUM: ssl: segfault when cipher is NULL
2023-12-15BUG/MINOR: ssl: suboptimal certificate selection with TLSv1.3 and dual ECDSA/RSA
2023-12-15BUG/MINOR: mux-h2: commit the current stream ID even on reject
2023-12-15BUG/MEDIUM: peers: Be sure to always refresh recconnect timer in sync task
2023-12-15BUG/MEDIUM: mux-h2: Don't report an error on shutr if a shutw is pending
2023-12-15BUG/MEDIUM: actions: always apply a longest match on prefix lookup
2023-12-15BUG/MINOR: hlua_fcn: potentially unsafe stktable_data_ptr usage
2023-12-15BUG/MINOR: hlua: fix invalid use of lua_pop on error paths
2023-10-04BUG/MAJOR: mux-h2: Report a protocol error for any DATA frame before headers
2023-10-04BUG/MINOR: freq_ctr: fix possible negative rate with the scaled API
2023-10-04BUG/MEDIUM: mux-fcgi: Don't swap trash and dbuf when handling STDERR records
2023-10-04BUG/MEDIUM: hlua: don't pass stale nargs argument to lua_resume()
2023-10-04BUG/MINOR: hlua/action: incorrect message on E_YIELD error
2023-10-04BUG/MEDIUM: stconn/stream: Forward shutdown on write timeout
2023-10-04BUG/MEDIUM: stconn: Wake applets on sending path if there is a pending shutdown
2023-10-04BUG/MINOR: stktable: allow sc-set-gpt(0) from tcp-request connection
2023-08-16BUG/MINOR: http: skip leading zeroes in content-length values
2023-08-16BUG/MINOR: h2: reject more chars from the :path pseudo header
2023-08-16BUG/MINOR: h1: do not accept '#' as part of the URI component
2023-08-16BUG/MAJOR: http: reject any empty content-length header value
2023-08-16BUG/MAJOR: http-ana: Get a fresh trash buffer for each header value replacement
2023-08-16BUG/MINOR: chunk: fix chunk_appendf() to not write a zero if buffer is full
2023-08-16BUG/MINOR: h1-htx: Return the right reason for 302 FCGI responses
2023-08-16BUG/MINOR: http: Return the right reason for 302
2023-08-16BUG/MINOR: sample: Fix wrong overflow detection in add/sub conveters
2023-08-16BUG/MINOR: ring: maxlen warning reported as alert
2023-08-16BUG/MEDIUM: mworker: increase maxsock with each new worker
2023-08-16BUG/MINOR: namespace: missing free in netns_sig_stop()
2023-08-16BUG/MINOR: server: inherit from netns in srv_settings_cpy()
2023-06-12BUG/MINOR: proxy: add missing interface bind free in free_proxy
2023-06-12BUG/MINOR: cfgparse-tcp: leak when re-declaring interface from bind line
2023-06-06BUG/MINOR: spoe: Only skip sending new frame after a receive attempt
2023-05-26BUG/MINOR: server: don't use date when restoring last_change from state file
2023-05-26BUG/MINOR: server: don't miss server stats update on server state transitions
2023-05-26BUG/MINOR: server: don't miss proxy stats update on server state transitions
2023-05-26BUG/MINOR: server: incorrect report for tracking servers leaving drain
2023-05-26BUG/MEDIUM: spoe: Don't start new applet if there are enough idle ones
2023-05-26BUG/MINOR: debug: do not emit empty lines in thread dumps
2023-05-26BUG/MEDIUM: filters: Don't deinit filters for disabled proxies during startup
2023-05-26BUG/MINOR: proxy: missing free in free_proxy for redirect rules
2023-05-26BUG/MINOR: log: fix memory error handling in parse_logsrv()
2023-05-26BUG/MINOR: hlua: unsafe hlua_lua2smp() usage
2023-05-26BUG/MINOR: tcp-rules: Don't shortened the inspect-delay when EOI is set
2023-05-26BUG/MEDIUM: mux-h1: do not refrain from signaling errors after end of input
2023-05-17BUG/MINOR: checks: postpone the startup of health checks by the boot time
2023-04-24BUG/MINOR: mux-h2: make sure to produce a log on invalid requests
2023-04-24BUG/MEDIUM: Update read expiration date on synchronous send
2023-04-24BUG/MEDIUM: proxy/sktable: prevent watchdog trigger on soft-stop
2023-04-24BUG/MINOR: cfgparse: make sure to include openssl-compat
2023-04-24BUG/MINOR: stick_table: alert when type len has incorrect characters
2023-04-24BUG/MEDIUM: mux-h1: Wakeup H1C on shutw if there is no I/O subscription
2023-04-24BUG/MEDIUM: mux-h2: erase h2c->wait_event.tasklet on error path
2023-04-24BUG/MEDIUM: spoe: Don't set the default traget for the SPOE agent frontend
2023-04-24BUG/MINOR: mux-h2: make sure the h2c task exists before refreshing it
2023-04-24BUG/MINOR: ssl: Use 'date' instead of 'now' in ocsp stapling callback
2023-04-24BUG/MINOR: http-check: Skip C-L header for empty body when it's not mandatory
2023-04-24BUG/MINOR: http-check: Don't set HTX_SL_F_BODYLESS flag with a log-format body
2023-04-24BUG/MINOR: ring: do not realign ring contents on resize
2023-04-24BUG/MINOR: mworker: prevent incorrect values in uptime
2023-04-24BUG/MEDIUM: mworker: don't register mworker_accept_wrapper() when master FD is wrong
2023-04-24BUG/MINOR: mworker: stop doing strtok directly from the env

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