HAProxy known bugs for maintenance branch 2.6 :  9 

This is maintenance branch 2.6 whose latest version is 2.6.21. 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 2.6.21, you're running with known bugs.

Quick links

Versions available in this branch

This branch contains the following releases :

DateVersionComment
2025-01-292.6.21 ⇐ last
2024-11-082.6.20 
2024-09-192.6.19 
2024-06-182.6.18 
2024-04-052.6.17 
2023-12-132.6.16 
2023-08-092.6.15 
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 (2.6.21)

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
9 0 0 3 6

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

Merge dateSubject - Severity (minor, medium, major, critical)
2025-02-19BUG/MEDIUM: spoe: Don't wakeup idle applets in loop during stopping
2025-02-19BUG/MINOR: spoe: Allow applet creation when closing the last one during stopping
2025-02-19BUG/MINOR: spoe: Check the shared waiting queue to shut applets during stopping
2025-02-19BUG/MINOR: http-ana: Disable fast-fwd for unfinished req waiting for upgrade
2025-02-19BUG/MEDIUM: mux-h1/mux-h2: Reject upgrades with payload on H2 side only
2025-02-19BUG/MINOR: h2: reject extended connect for h2c protocol
2025-02-19BUG/MINOR: h1: do not forward h2c upgrade header token
2025-02-19BUG/MINOR: ssl_sock: fix xprt_set_used() to properly clear the TASK_F_USR1 bit
2025-02-11BUG/MEDIUM: ssl: chosing correct certificate using RSA-PSS with TLSv1.3

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
2025-02-21BUG/MEDIUM: stream: use non-blocking freq_ctr calls from the stream dumper
2025-02-21BUG/MEDIUM: stream: never allocate connection addresses from signal handler
2025-02-21BUG/MINOR: mux-h1: always make sure h1s->sd exists in h1_dump_h1s_info()
2025-02-21BUG/MINOR: stream: do not call co_data() from __strm_dump_to_buffer()
2025-02-21BUG/MINOR: sink: add tempo between 2 connection attempts for sft servers
2025-02-21BUG/MINOR: log: fix outgoing abns address family
2025-02-21BUG/MEDIUM: uxst: fix outgoing abns address family in connect()
2025-02-20BUG/MINOR: cfgparse: fix NULL ptr dereference in cfg_parse_peers
2025-02-20BUG/MEDIUM: spoe/mux-spop: Introduce an NOOP action to deal with empty ACK
2025-02-20BUG/MEDIUM: applet: Don't handle EOI/EOS/ERROR is applet is waiting for room

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