HAProxy known bugs for version v2.8.6 (maintenance branch 2.8) :  214 

This version (2.8.6) is a release belonging to maintenance branch 2.8 whose latest version is 2.8.12. 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
2024-11-082.8.12 ⇐ last
2024-09-192.8.11 
2024-06-142.8.10 
2024-04-052.8.9 
2024-04-052.8.8 
2024-02-262.8.7 
2024-02-152.8.6 ⇐ yours
2023-12-072.8.5 
2023-11-172.8.4 
2023-09-072.8.3 
2023-08-092.8.2 
2023-07-032.8.1 
2023-05-312.8.0 

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

These fixes have already been queued for a more recent 2.8 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
214 0 9 74 131

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

Merge dateSubject - Severity (minor, medium, major, critical)
2024-11-08BUG/MEDIUM: queue: make sure never to queue when there's no more served conns
2024-11-08BUG/MINOR: http-ana: Disable fast-fwd for unfinished req waiting for upgrade
2024-11-08BUG/MEDIUM: queue: always dequeue the backend when redistributing the last server
2024-11-08BUG/MEDIUM: stream: make stream_shutdown() async-safe
2024-11-08BUG/MEDIUM: mux-h1/mux-h2: Reject upgrades with payload on H2 side only
2024-11-08BUG/MINOR: h2: reject extended connect for h2c protocol
2024-11-08BUG/MINOR: h1: do not forward h2c upgrade header token
2024-11-08BUG/MINOR: ssl_sock: fix xprt_set_used() to properly clear the TASK_F_USR1 bit
2024-11-06BUG/MINOR: http-ana: Report internal error if an action yields on a final eval
2024-11-06BUG/MINOR: ssl/cli: 'set ssl cert' does not check the transaction name correctly
2024-10-24BUG/MEDIUM: server: fix race on servers_list during server deletion
2024-10-24BUG/MEDIUM: stconn: Report blocked send if sends are blocked by an error
2024-10-24BUG/MINOR: http-ana: Fix wrong client abort reports during responses forwarding
2024-10-24BUG/MINOR: server: fix dynamic server leak with check on failed init
2024-10-24BUG/MINOR: mux-quic: do not close STREAM with empty FIN if no data sent
2024-10-23BUG/MEDIUM: connection/http-reuse: fix address collision on unhandled address families
2024-10-23BUG/MINOR: mworker: fix mworker-max-reloads parser
2024-10-23BUG/MINOR: http-ana: Don't report a server abort if response payload is invalid
2024-10-23BUG/MINOR: httpclient: return NULL when no proxy available during httpclient_new()
2024-10-23BUG/MEDIUM: mux-quic: ensure timeout server is active for short requests
2024-10-23BUG/MEDIUM: hlua: properly handle sample func errors in hlua_run_sample_{fetch,conv}()
2024-10-23BUG/MEDIUM: hlua: make hlua_ctx_renew() safe
2024-10-21BUG/MEDIUM: server: server stuck in maintenance after FQDN change
2024-10-01BUG/MINOR: cfgparse-global: fix allowed args number for setenv
2024-10-01BUG/MINOR: server: make sure the HMAINT state is part of MAINT
2024-10-01BUG/MEDIUM: cli: Deadlock when setting frontend maxconn
2024-10-01BUG/MEDIUM: mux-pt: Never fully close the connection on shutdown
2024-10-01BUG/MEDIUM: ssl: Fix crash when calling "update ssl ocsp-response" when an update is ongoing
2024-10-01BUG/MAJOR: ocsp: Separate refcount per instance and per store
2024-09-18BUG/MINOR: cfgparse-listen: fix option httpslog override warning message
2024-09-17BUG/MEDIUM: promex: Wait to have the request before sending the response
2024-09-17BUG/MEDIUM: cache/stats: Wait to have the request before sending the response
2024-09-17BUG/MEDIUM: queue: implement a flag to check for the dequeuing
2024-09-17BUG/MINOR: clock: validate that now_offset still applies to the current date
2024-09-17BUG/MINOR: clock: make time jump corrections a bit more accurate
2024-09-17BUG/MINOR: polling: fix time reporting when using busy polling
2024-09-10BUG/MAJOR: mux-h1: Wake SC to perform 0-copy forwarding in CLOSING state
2024-09-10BUG/MEDIUM: pattern: prevent UAF on reused pattern expr
2024-09-10BUG/MINOR: pattern: prevent const sample from being tampered in pat_match_beg()
2024-09-10BUG/MEDIUM: clock: detect and cover jumps during execution
2024-09-10BUG/MINOR: pattern: do not leave a leading comma on "set" error messages
2024-09-10BUG/MINOR: pattern: pat_ref_set: return 0 if err was found
2024-09-10BUG/MINOR: pattern: pat_ref_set: fix UAF reported by coverity
2024-09-05BUG/MINOR: stconn: Request to send something to be woken up when the pipe is full
2024-09-05BUG/MEDIUM: mux-pt/mux-h1: Release the pipe on connection error on sending path
2024-09-05BUG/MEDIUM: clock: also update the date offset on time jumps
2024-09-05BUG/MINOR: h3: properly reject too long header responses
2024-09-05BUG/MINOR: proto_uxst: delete fd from fdtab if listen() fails
2024-09-05BUG/MINOR: mux-quic: do not send too big MAX_STREAMS ID
2024-09-05BUG/MEDIUM: mworker/cli: fix pipelined modes on master CLI
2024-09-05BUG/MINOR: proto_tcp: keep error msg if listen() fails
2024-09-05BUG/MINOR: proto_tcp: delete fd from fdtab if listen() fails
2024-09-05BUG/MINOR: quic/trace: make quic_conn_enc_level_init() emit NEW not CLOSE
2024-09-05BUG/MINOR: trace/quic: make "qconn" selectable as a lockon criterion
2024-09-05BUG/MINOR: trace: automatically start in waiting mode with "start "
2024-09-05BUG/MEDIUM: trace: fix null deref in lockon mechanism since TRACE_ENABLED()
2024-09-05BUG/MINOR: trace/quic: permit to lock on frontend/connect/session etc
2024-09-05BUG/MINOR: trace/quic: enable conn/session pointer recovery from quic_conn
2024-09-05BUG/MINOR: fcgi-app: handle a possible strdup() failure
2024-09-05BUG/MEDIUM: mux-h2: Propagate term flags to SE on error in h2s_wake_one_stream
2024-09-05BUG/MEDIUM: h2: Only report early HTX EOM for tunneled streams
2024-09-05BUG/MEDIUM: http-ana: Report error on write error waiting for the response
2024-09-05BUG/MEDIUM: quic: prevent conn freeze on 0RTT undeciphered content
2024-09-05BUG/MEDIUM: stconn: Report error on SC on send if a previous SE error was set
2024-09-05BUG/MEDIUM: mux-h1: Properly handle empty message when an error is triggered
2024-09-05BUG/MEDIUM: cli: Always release back endpoint between two commands on the mcli
2024-09-05BUG/MEDIUM: stream: Prevent mux upgrades if client connection is no longer ready
2024-07-29BUG/MEDIUM: init: fix fd_hard_limit default in compute_ideal_maxconn
2024-07-29BUG/MEDIUM: queue: deal with a rare TOCTOU in assign_server_and_queue()
2024-07-29BUG/MEDIUM: jwt: Clear SSL error queue on error when checking the signature
2024-07-29BUG/MINOR: quic: Lack of precision when computing K (cubic only cc)
2024-07-29BUG/MINOR: cli: Atomically inc the global request counter between CLI commands
2024-07-29BUG/MINOR: server: Don't warn fallback IP is used during init-addr resolution
2024-07-29BUG/MINOR: stick-table: fix crash for src_inc_gpc() without stkcounter
2024-07-29BUG/MEDIUM: ssl_sock: fix deadlock in ssl_sock_load_ocsp() on error path
2024-07-29BUG/MEDIUM: debug/cli: fix "show threads" crashing with low thread counts
2024-07-29BUG/MINOR: session: Eval L4/L5 rules defined in the default section
2024-07-29BUG/MEDIUM: bwlim: Be sure to never set the analyze expiration date in past
2024-07-29BUG/MEDIUM: spoe: Be sure to create a SPOE applet if none on the current thread
2024-07-29BUG/MEDIUM: h1: Reject empty Transfer-encoding header
2024-07-29BUG/MINOR: h1: Reject empty coding name as last transfer-encoding value
2024-07-29BUG/MINOR: h1: Fail to parse empty transfer coding names
2024-07-29BUG/MINOR: jwt: fix variable initialisation
2024-07-29BUG/MINOR: jwt: don't try to load files with HMAC algorithm
2024-07-03BUG/MEDIUM: quic: fix possible exit from qc_check_dcid() without unlocking
2024-07-03BUG/MINOR: quic: fix race-condition on trace for CID retrieval
2024-07-03BUG/MINOR: quic: fix race condition in qc_check_dcid()
2024-07-03BUG/MEDIUM: quic: fix race-condition in quic_get_cid_tid()
2024-07-03BUG/MEDIUM: h3: ensure the ":scheme" pseudo header is totally valid
2024-07-03BUG/MEDIUM: h3: ensure the ":method" pseudo header is totally valid
2024-07-03BUG/MINOR: hlua: report proper context upon error in hlua_cli_io_handler_fct()
2024-07-03BUG/MINOR: quic: fix BUG_ON() on Tx pkt alloc failure
2024-07-03BUG/MINOR: mux-quic: fix crash on qcs SD alloc failure
2024-07-03BUG/MINOR: h3: fix crash on STOP_SENDING receive after GOAWAY emission
2024-07-03BUG/MINOR: proxy: fix header_unique_id leak on deinit()
2024-07-03BUG/MINOR: proxy: fix source interface and usesrc leaks on deinit()
2024-07-03BUG/MINOR: proxy: fix dyncookie_key leak on deinit()
2024-07-03BUG/MINOR: proxy: fix check_{command,path} leak on deinit()
2024-07-03BUG/MINOR: proxy: fix log_tag leak on deinit()
2024-07-03BUG/MINOR: proxy: fix server_id_hdr_name leak on deinit()
2024-07-03BUG/MINOR: quic: fix computed length of emitted STREAM frames
2024-06-07BUG/MEDIUM: quic: don't blindly rely on unaligned accesses
2024-06-07BUG/MAJOR: connection: fix server used_conns with H2 + reuse safe
2024-06-07BUG/MEDIUM: http_ana: ignore NTLM for reuse aggressive/always and no H1
2024-06-07BUG/MAJOR: server: do not delete srv referenced by session
2024-06-07BUG/MEDIUM: quic: fix connection freeze on post handshake
2024-06-07BUG/MEDIUM: server: fix dynamic servers initial settings
2024-06-06BUG/MEDIUM: ssl: wrong priority whem limiting ECDSA ciphers in ECDSA+RSA configuration
2024-06-06BUG/MINOR: hlua: fix leak in hlua_ckch_set() error path
2024-06-06BUG/MINOR: hlua: prevent LJMP in hlua_traceback()
2024-06-06BUG/MINOR: hlua: fix unsafe hlua_pusherror() usage
2024-06-06BUG/MINOR: hlua: don't use lua_pushfstring() when we don't expect LJMP
2024-06-06BUG/MINOR: quic: prevent crash on qc_kill_conn()
2024-06-06BUG/MINOR: hlua: use CertCache.set() from various hlua contexts
2024-06-06BUG/MINOR: tools: fix possible null-deref in env_expand() on out-of-memory
2024-06-06BUG/MINOR: tcpcheck: report correct error in tcp-check rule parser
2024-06-06BUG/MINOR: cfgparse: remove the correct option on httpcheck send-state warning
2024-06-06BUG/MINOR: activity: fix Delta_calls and Delta_bytes count
2024-06-06BUG/MINOR: ssl/ocsp: init callback func ptr as NULL
2024-06-06BUG/MINOR: server: Don't reset resolver options on a new default-server line
2024-06-06BUG/MINOR: http-htx: Support default path during scheme based normalization
2024-06-06BUG/MINOR: quic: adjust restriction for stateless reset emission
2024-06-06BUG/MEDIUM: mux-quic: Create sedesc in same time of the QUIC stream
2024-06-06BUG/MEDIUM: quic_tls: prevent LibreSSL < 4.0 from negotiating CHACHA20_POLY1305
2024-06-06BUG/MAJOR: quic: Crash with TLS_AES_128_CCM_SHA256 (libressl only)
2024-06-06BUG/MINOR: connection: parse PROXY TLV for LOCAL mode
2024-06-06BUG/MINOR: stats: Don't state the 303 redirect response is chunked
2024-06-06BUG/MINOR: htpp-ana/stats: Specify that HTX redirect messages have a C-L header
2024-06-06BUG/MEDIUM: fd: prevent memory waste in fdtab array
2024-06-06BUG/MEDIUM: h1: Reject CONNECT request if the target has a scheme
2024-06-06BUG/MINOR: h1: Check authority for non-CONNECT methods only if a scheme is found
2024-06-06BUG/MEDIUM: stick-tables: properly mark stktable_data as packed
2024-06-06BUG/MEDIUM: htx: mark htx_sl as packed since it may be realigned
2024-06-06BUG/MINOR: qpack: fix error code reported on QPACK decoding failure
2024-06-06BUG/MINOR: mux-quic: fix error code on shutdown for non HTTP/3
2024-06-06BUG/MINOR: log: smp_rgs array issues with inherited global log directives
2024-06-06BUG/MINOR: log: keep the ref in dup_logger()
2024-06-06BUG/MINOR: haproxy: only tid 0 must not sleep if got signal
2024-06-06BUG/MINOR: mworker: reintroduce way to disable seamless reload with -x /dev/null
2024-06-06BUG/MINOR: h1: fix detection of upper bytes in the URI
2024-06-06BUG/MINOR: backend: use cum_sess counters instead of cum_conn
2024-06-06BUG/MINOR: fd: my_closefrom() on Linux could skip contiguous series of sockets
2024-06-06BUG/MINOR: sock: handle a weird condition with connect()
2024-06-06BUG/MINOR: stconn: Fix sc_mux_strm() return value
2024-06-06BUG/MEDIUM: cache: Vary not working properly on anything other than accept-encoding
2024-04-18BUG/MINOR: server: fix slowstart behavior
2024-04-18BUG/MEDIUM: peers: Fix exit condition when max-updates-at-once is reached
2024-04-18BUG/MEDIUM: spoe: Always retry when an applet fails to send a frame
2024-04-18BUG/MEDIUM: applet: Fix applet API to put input data in a buffer
2024-04-18BUG/MEDIUM: evports: do not clear returned events list on signal
2024-04-18BUG/MEDIUM: stconn: Don't forward channel data if input data must be filtered
2024-04-18BUG/MEDIUM: grpc: Fix several unaligned 32/64 bits accesses
2024-04-18BUG/MEDIUM: peers/trace: fix crash when listing event types
2024-04-18BUG/MINOR: debug: make sure DEBUG_STRICT=0 does work as documented
2024-04-18BUG/MINOR: http-ana: Fix TX_L7_RETRY and TX_D_L7_RETRY values
2024-04-18BUG/MEDIUM: http-ana: Deliver 502 on keep-alive for fressh server connection
2024-04-18BUG/MINOR: log: invalid snprintf() usage in sess_build_logline()
2024-04-18BUG/MINOR: tools/log: invalid encode_{chunk,string} usage
2024-04-18BUG/MINOR: log: fix lf_text_len() truncate inconsistency
2024-04-18BUG/MINOR: listener: always assign distinct IDs to shards
2024-04-18BUG/MINOR: cli: Report an error to user if command or payload is too big
2024-04-05BUG/MINOR: proxy: fix logformat expression leak in use_backend rules
2024-04-03BUG/MINOR: backend: properly handle redispatch 0
2024-04-03BUG/MINOR: server: ignore 'enabled' for dynamic servers
2024-03-29BUG/MEDIUM: cli: Warn if pipelined commands are delimited by a \n
2024-03-29BUG/MINOR: server: fix persistence cookie for dynamic servers
2024-03-29BUG/MINOR: ssl: Detect more 'ocsp-update' incompatibilities
2024-03-29BUG/MINOR: ssl: Wrong ocsp-update "incompatibility" error message
2024-03-29BUG/MINOR: server: 'source' interface ignored from 'default-server' directive
2024-03-29BUG/MEDIUM: mux-fcgi: Properly handle EOM flag on end-of-trailers HTX block
2024-03-29BUG/MINOR: mux-quic: close all QCS before freeing QCC tasklet
2024-03-29BUG/MEDIUM: ssl: Fix crash in ocsp-update log function
2024-03-29BUG/MINOR: session: ensure conn owner is set after insert into session
2024-03-29BUG/MEDIUM: spoe: Return an invalid frame on recv if size is too small
2024-03-29BUG/MINOR: spoe: Be sure to be able to quickly close IDLE applets on soft-stop
2024-03-29BUG/MEDIUM: spoe: Don't rely on stream's expiration to detect processing timeout
2024-03-29BUG/MINOR: listener: Don't schedule frontend without task in listener_release()
2024-03-29BUG/MINOR: listener: Wake proxy's mngmt task up if necessary on session release
2024-03-29BUG/MEDIUM: hlua: streams don't support mixing lua-load with lua-load-per-thread (2nd try)
2024-03-29DEBUG: lua: precisely identify if stream is stuck inside lua or not
2024-03-29BUG/MINOR: hlua: fix missing lock in hlua_filter_delete()
2024-03-29BUG/MINOR: hlua: missing lock in hlua_filter_new()
2024-03-29BUG/MINOR: hlua: segfault when loading the same filter from different contexts
2024-03-29BUG/MINOR: ssl: fix possible ctx memory leak in sample_conv_aes_gcm()
2024-03-29BUG/MINOR: cfgparse: report proper location for log-format-sd errors
2024-03-29BUG/MINOR: ssl/cli: typo in new ssl crl-file CLI description
2024-03-29BUG/MINOR: sink: fix a race condition in the TCP log forwarding code
2024-03-29BUG/MINOR: hlua: don't call ha_alert() in hlua_event_subscribe()
2024-03-29BUG/MAJOR: hlua: improper lock usage with hlua_ctx_resume()
2024-03-29BUG/MEDIUM: hlua: improper lock usage with SET_SAFE_LJMP()
2024-03-29BUG/MINOR: hlua: improper lock usage in hlua_filter_new()
2024-03-29BUG/MINOR: hlua: improper lock usage in hlua_filter_callback()
2024-03-29BUG/MINOR: hlua: fix possible crash in hlua_filter_new() under load
2024-03-29BUG/MINOR: hlua: don't use lua_tostring() from unprotected contexts
2024-03-29BUG/MINOR: hlua: fix unsafe lua_tostring() usage with empty stack
2024-03-29BUG/MINOR: tools: seed the statistical PRNG slightly better
2024-03-29BUG/MINOR: hlua: Fix log level to the right value when set via TXN:set_loglevel
2024-03-29BUG/MINOR: config/quic: Alert about PROXY protocol use on a QUIC listener
2024-03-29BUG/MINOR: ssl/cli: duplicate cleaning code in cli_parse_del_crtlist
2024-03-29BUG/MINOR: ist: only store NUL byte on succeeded alloc
2024-03-29BUG/MINOR: quic: fix output of show quic
2024-03-29BUG/MAJOR: server: fix stream crash due to deleted server
2024-03-29BUG/MINOR: stats: drop srv refcount on early release
2024-03-29BUG/MINOR: ist: allocate nul byte on istdup
2024-03-29BUG/MEDIUM: quic: fix transient send error with listener socket
2024-03-29BUG/MEDIUM: hlua: Don't loop if a lua socket does not consume received data
2024-03-29BUG/MEDIUM: hlua: Be able to garbage collect uninitialized lua sockets
2024-03-29BUG/MEDIUM: applet: Immediately free appctx on early error
2024-03-29BUG/MINOR: qpack: reject invalid dynamic table capacity
2024-03-29BUG/MINOR: qpack: reject invalid increment count decoding
2024-03-29BUG/MINOR: quic: reject HANDSHAKE_DONE as server
2024-03-29BUG/MINOR: quic: reject unknown frame type
2024-03-29BUG/MAJOR: promex: fix crash on deleted server
2024-03-12BUG/MINOR: mux-h2: count rejected DATA frames against the connection's flow control
2024-02-26BUG/MAJOR: ssl/ocsp: crash with ocsp when old process exit or using ocsp CLI

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