HAProxy known bugs for maintenance branch 2.6 :  43 

This is maintenance branch 2.6 whose latest version is 2.6.15. 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. In short, if you are running any 2.6 version other than 2.6.15, you're running with known bugs.

Quick links

Versions available in this branch

This branch contains the following releases :

DateVersionComment
2023-08-092.6.15 ⇐ last
2023-06-092.6.14 
2023-05-022.6.13 
2023-03-282.6.12 
2023-03-172.6.11 
2023-03-102.6.10 
2023-02-142.6.9 
2023-01-242.6.8 
2022-12-022.6.7 
2022-09-222.6.6 
2022-09-032.6.5 
2022-08-222.6.4 
2022-08-192.6.3 
2022-07-222.6.2 
2022-06-212.6.1 
2022-05-312.6.0 

Fixes for known bugs pending in this branch since the last release (2.6.15)

These fixes have already been queued for the next 2.6 release but no version was released with them yet. Note that fixes are backported several at a time from the development branch to maintenance branches, and the absence of a fix here doesn't mean none will be issued soon.

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 the latest version of this branch by category :

TotalCRITICALMAJORMEDIUMMINOR
43 0 2 15 26

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

Merge dateSubject - Severity (minor, medium, major, critical)
2023-10-27BUG/MINOR: mux-h2: update tracked counters with req cnt/req err
2023-10-27BUG/MINOR: mux-h2: commit the current stream ID even on reject
2023-10-27BUG/MEDIUM: peers: Fix synchro for huge number of tables
2023-10-27BUG/MEDIUM: peers: Be sure to always refresh recconnect timer in sync task
2023-10-27BUG/MINOR: mux-h2: fix http-request and http-keep-alive timeouts again
2023-10-27BUG/MEDIUM: mux-h2: Don't report an error on shutr if a shutw is pending
2023-10-27BUG/MINOR: mux-h2: make up other blocked streams upon removal from list
2023-10-27BUG/MINOR: mux-quic: fix free on qcs-new fail alloc
2023-10-27BUG/MINOR: h3: strengthen host/authority header parsing
2023-10-27BUG/MINOR: mux-quic: support initial 0 max-stream-data
2023-10-27BUG/MINOR: quic: reject packet with no frame
2023-10-27BUG/MINOR: quic: Avoid crashing with unsupported cryptographic algos
2023-10-27BUG/MINOR: hq-interop: simplify parser requirement
2023-10-27BUG/MEDIUM: h1: Ignore C-L value in the H1 parser if T-E is also set
2023-10-27BUG/MINOR: mux-h1: Ignore C-L when sending H1 messages if T-E is also set
2023-10-27BUG/MEDIUM: hlua: Initialize appctx used by a lua socket on connect only
2023-10-17BUG/MEDIUM: quic_conn: let the scheduler kill the task when needed
2023-10-06BUG/MEDIUM: actions: always apply a longest match on prefix lookup
2023-10-04BUILD: bug: make BUG_ON() void to avoid a rare warning
2023-10-04BUG/MEDIUM: server/cli: don't delete a dynamic server that has streams
2023-10-04BUG/MINOR: server: add missing free for server->rdr_pfx
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/MINOR: promex: fix backend_agg_check_status
2023-10-04BUG/MEDIUM: mux-fcgi: Don't swap trash and dbuf when handling STDERR records
2023-10-04BUG/MINOR: hlua/init: coroutine may not resume itself
2023-10-04BUG/MEDIUM: hlua: don't pass stale nargs argument to lua_resume()
2023-10-04Revert "BUG/MEDIUM: quic: missing check of dcid for init pkt including a token"
2023-10-04BUG/MEDIUM: hlua: streams don't support mixing lua-load with lua-load-per-thread
2023-10-04BUG/MINOR: quic: Wrong cluster secret initialization
2023-10-04BUG/MINOR: quic: Leak of frames to send.
2023-09-07BUG/MINOR: quic: Wrong RTT computation (srtt and rrt_var)
2023-09-07BUG/MINOR: hlua/action: incorrect message on E_YIELD error
2023-09-07BUG/MEDIUM: stconn/stream: Forward shutdown on write timeout
2023-09-07BUG/MINOR: quic: Wrong RTT adjusments
2023-09-07BUG/MEDIUM: h1-htx: Ensure chunked parsing with full output buffer
2023-09-07BUG/MAJOR: quic: Really ignore malformed ACK frames.
2023-09-07BUG/MINOR: quic: Possible skipped RTT sampling
2023-09-07BUG/MEDIUM: stconn: Don't block sends if there is a pending shutdown
2023-09-07BUG/MEDIUM: stconn: Wake applets on sending path if there is a pending shutdown
2023-09-07BUG/MINOR: ssl/cli: can't find ".crt" files when replacing a certificate
2023-09-07BUG/MINOR: ssl_sock: fix possible memory leak on OOM
2023-09-07BUG/MINOR: hlua_fcn: potentially unsafe stktable_data_ptr usage
2023-09-07BUG/MINOR: stktable: allow sc-set-gpt(0) from tcp-request connection
2023-09-07BUG/MINOR: hlua: fix invalid use of lua_pop on error paths

Known bugs fixed in the development branch after the last commit in this branch

It is important to understand that not all of these commits are necessarily relevant to this version, but clicking on them will show the bug description. All fixes are made first in the development branch and then backported to the maintenance branches. This ensures no fix is lost when upgrading. If a fix was marked for backporting to this branch and is not there yet, it's likely that it is still missing. Do not hesitate to ask on the haproxy mailing list if you feel like a fix has been skipped.

DateSubject
2023-12-08BUG/MINOR: ext-check: cannot use without preserve-env
2023-12-08BUG/MEDIUM: map/acl: pat_ref_{set,delete}_by_id regressions
2023-12-08BUG/MEDIUM: quic: Possible buffer overflow when building TLS records
2023-12-07BUG/MINOR: mworker/cli: fix set severity-output support
2023-12-06BUG/MINOR: lua: Wrong OCSP CID after modifying an SSL certficate (LUA)
2023-12-06BUG/MINOR: ssl: Wrong OCSP CID after modifying an SSL certficate
2023-12-06BUG/MINOR: ssl: Double free of OCSP Certificate ID
2023-12-05BUG/MEDIUM: peers: fix partial message decoding
2023-12-01BUG/MINOR: server/event_hdl: properly handle AF_UNSPEC for INETADDR event
2023-12-01BUG/MINOR: sample: Make the `word` converter compatible with `-m found`
2023-12-01DEBUG: stream: Report lra/fsb values for front end back SC in stream dump
2023-12-01BUG/MINOR: cfgparse-listen: fix warning being reported as an alert
2023-11-30DEBUG: unstatify a few functions that are often present in backtraces
2023-11-30BUG/MINOR: config: Stopped parsing upon unmatched environment variables
2023-11-30BUG/MINOR: quic_tp: fix preferred_address decoding
2023-11-30BUG/MINOR: acme.sh: update the deploy script
2023-11-29BUG/MEDIUM: cli: Don't look for payload pattern on empty commands
2023-11-29BUG/MINOR: h3: always reject PUSH_PROMISE
2023-11-29BUG/MINOR: h3: fix TRAILERS encoding
2023-11-29BUG/MEDIUM: mux-quic: Stop zero-copy FF during nego if input is not empty
2023-11-29BUG/MEDIUM: master/cli: Properly pin the master CLI on thread 1 / group 1
2023-11-29BUG/MINOR: compression: possible NULL dereferences in comp_prepare_compress_request()
2023-11-29BUG/MAJOR: server/addr: fix a race during server addr:svc_port updates
2023-11-29BUG/MEDIUM: server/event_hdl: memory overrun in _srv_event_hdl_prepare_inetaddr()
2023-11-28BUG/MINOR: cache: Remove incomplete entries from the cache when stream is closed
2023-11-28BUG/MEDIUM: mux-h2: Remove H2_SF_NOTIFIED flag for H2S blocked on fast-forward
2023-11-28BUG/MEDIUM: stconn: Don't perform zero-copy FF if opposite SC is blocked
2023-11-28BUG/MINOR: quic: fix CONNECTION_CLOSE_APP encoding
2023-11-27BUG/MEDIUM: mux-h1: Properly ignore trailers when a content-length is announced
2023-11-24BUG/MINOR: global: Fix tune.disable-(fast-forward/zero-copy-forwarding) options
2023-11-23BUG/MEDIUM: mux-h1: Don't set CO_SFL_MSG_MORE flag on last fast-forward send
2023-11-23DEBUG: tinfo: store the pthread ID and the stack pointer in tinfo
2023-11-23BUG/MINOR: server: do not leak default-server in defaults sections
2023-11-22BUG/MINOR: quic: Possible RX packet memory leak under heavy load
2023-11-22BUG/MINOR: quic: Possible leak of TX packets under heavy load
2023-11-22BUG/MEDIUM: quic: Possible crash during retransmissions and heavy load
2023-11-20DEBUG: connection/flags: update flags for reverse HTTP
2023-11-20BUG/MEDIUM: quic: Possible crash for connections to be killed
2023-11-20BUG/MAJOR: quic: complete thread migration before tcp-rules
2023-11-20BUG/MINOR: sock: mark abns sockets as non-suspendable and always unbind them
2023-11-20BUG/MINOR: startup: set GTUNE_SOCKET_TRANSFER correctly
2023-11-18BUG/MINOR: proxy/stktable: missing frees on proxy cleanup
2023-11-17BUG/MINOR: stream/cli: report correct stream age in "show sess"
2023-11-17BUG/MEDIUM: mux-fcgi: fail earlier on malloc in takeover()
2023-11-17BUG/MEDIUM: mux-h1: fail earlier on malloc in takeover()
2023-11-17BUG/MEDIUM: mux-h2: fail earlier on malloc in takeover()
2023-11-17BUG/MINOR: quic: Malformed CONNECTION_CLOSE frame
2023-11-17BUG/MINOR: shctx: Remove old HA_SPIN_INIT
2023-11-17BUG/MINOR: stconn: Report read activity on non-indep streams for partial sends
2023-11-17BUG/MINOR: stconn/applet: Report send activity only if there was output data
2023-11-17BUG/MINOR: stconn: Use HTX-aware channel's functions to get info on buffer
2023-11-17BUG/MINOR: stconn: Fix streamer detection for HTX streams
2023-11-17BUG/MEDIUM: stconn: Update fsb date on partial sends
2023-11-16BUG/MINOR: mux_h2: reject passive reverse conn if error on add to idle
2023-11-14BUG/MEDIUM: stream: Don't call mux .ctl() callback if not implemented
2023-11-14BUG/MEDIUM: mworker: set the master variable earlier
2023-11-14BUG/MEDIUM: stream: Properly handle abortonclose when set on backend only
2023-11-14BUG/MINOR: stconn: Handle abortonclose if backend connection was already set up
2023-11-14BUG/MEDIUM: connection: report connection errors even when no mux is installed
2023-11-13BUG/MINOR: quic: maximum window limits do not match the doc
2023-11-13BUG/MEDIUM: quic: Non initialized CRYPTO data stream deferencing
2023-11-13BUG/MEDIUM: quic: fix FD for quic_cc_conn
2023-11-13BUG/MINOR: quic: fix decrement of half_open counter on qc alloc failure
2023-11-13BUG/MINOR: quic: fix crash on qc_new_conn alloc failure
2023-11-13BUG/MINOR: log: keep the ref in dup_logger()
2023-11-13BUG/MINOR: sample: Fix bytes converter if offset is bigger than sample length
2023-11-13BUG/MEDIUM: proxy: always initialize the default settings after init
2023-11-10BUG/MINOR: quic: Useless use of non-contiguous buffer for in order CRYPTO data
2023-11-10BUG/MINOR: sink: don't learn srv port from srv addr
2023-11-10BUG/MEDIUM: server: invalid address (post)parsing checks
2023-11-10BUG/MEDIUM: applet: Remove appctx from buffer wait list on release
2023-11-10BUG/MINOR: quic: remove dead code in error path
2023-11-09BUG/MINOR: quic: fix retry token check inconsistency
2023-11-09BUG/MEDIUM: mux-h1: Exit early if fast-forward is not supported by opposite SC
2023-11-09BUG/MEDIUM: stconn: Don't update stream expiration date if already expired
2023-11-09BUG/MEDIUM: quic: Possible crashes during secrets allocations (heavy load)
2023-11-09BUG/MEDIUM: quic: Avoid some crashes upon TX packet allocation failures
2023-11-09BUG/MEDIUM: quic: Possible crashes when sending too short Initial packets
2023-11-09BUG/MEDIUM: quic: Avoid trying to send ACK frames from an empty ack ranges tree
2023-11-09BUG/MEDIUM: quic: Too short Initial packet sent (enc. level allocation failed)
2023-11-09BUG/MINOR: quic: idle timer task requeued in the past
2023-11-08BUG/MEDIUM: pool: try once to allocate from another bucket if empty
2023-11-08BUG/MINOR: pool: check one other random bucket on alloc conflict
2023-11-08BUG/MEDIUM: pool: fix releasable pool calculation when overloaded
2023-11-08BUG/MEDIUM: freq-ctr: Don't report overshoot for long inactivity period
2023-11-08BUG/MINOR: mux-h1: Properly handle http-request and http-keep-alive timeouts
2023-11-08BUG/MINOR: stick-table/cli: Check for invalid ipv4 key
2023-11-08BUG/MINOR: mux-h1: Release empty ibuf during data fast-forwarding
2023-11-07BUG/MEDIUM: mux-h1: Be sure xprt support splicing to use it during fast-forward
2023-11-07BUG/MEDIUM: quic: fix sslconns on quic_conn alloc failure
2023-11-07BUG/MEDIUM: quic: fix actconn on quic_conn alloc failure
2023-11-07BUG/MINOR: stconn: Sanitize report for read activity
2023-11-07BUG/MEDIUM: Don't apply a max value on room_needed in sc_need_room()
2023-11-07BUG/MEDIUM: stconn: Don't report rcv/snd expiration date if SC cannot epxire
2023-11-07BUG/MEDIUM: stconn: Report send activity during mux-to-mux fast-forward
2023-11-04BUG/MINOR: server: remove some incorrect free() calls on null elements
2023-11-04BUG/MEDIUM: pattern: don't trim pools under lock in pat_ref_purge_range()
2023-11-03BUG/MINOR: cfgparse/stktable: fix error message on stktable_init() failure
2023-11-03BUG/MINOR: stktable: missing free in parse_stick_table()
2023-11-03BUG/MINOR: proto_reverse_connect: support SNI on active connect
2023-10-31BUG/MINOR: tcpcheck: Report hexstring instead of binary one on check failure
2023-10-30BUG/MEDIUM: ssl: segfault when cipher is NULL
2023-10-27BUG/MINOR: mux-quic: fix early close if unset client timeout

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