HAProxy known bugs for maintenance branch 2.4 :  0 

This is maintenance branch 2.4 whose latest version is 2.4.29. 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 2.4 version other than 2.4.29, you're running with known bugs.

Quick links

Versions available in this branch

This branch contains the following releases :

DateVersionComment
2025-04-222.4.29 ⇐ last
2024-11-082.4.28 
2024-06-182.4.27 
2024-04-052.4.26 
2023-12-142.4.25 
2023-08-192.4.24 
2023-06-092.4.23 
2023-02-142.4.22 
2023-01-272.4.21 
2022-12-092.4.20 
2022-09-282.4.19 
2022-07-272.4.18 
2022-05-132.4.17 
2022-04-292.4.16 
2022-03-142.4.15 
2022-02-252.4.14 
2022-02-162.4.13 
2022-01-112.4.12 
2022-01-072.4.11 
2021-12-232.4.10 
2021-11-242.4.9 
2021-11-032.4.8 
2021-10-042.4.7 
2021-10-042.4.6 
2021-10-012.4.5 
2021-09-072.4.4 
2021-08-172.4.3 
2021-07-072.4.2 
2021-06-172.4.1 
2021-05-142.4.0 

Fixes for known bugs pending in this branch since the last release (2.4.29)

These fixes have already been queued for the next 2.4 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
0 0 0 0 0

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

Merge dateSubject - Severity (minor, medium, major, critical)

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
2025-04-30BUG/MEDIUM: connections: Report connection closing in conn_create_mux()
2025-04-30BUG/MINOR: mux-spop: Use the right bitwise operator in spop_ctl()
2025-04-30BUG/MINOR: mux-h1: Fix trace message in h1_detroy() to not relay on connection
2025-04-30BUG/MINOR: mux-h1: Don't pretend connection was released for TCP>H1>H2 upgrade
2025-04-30BUG/MEDIUM: mux-spop: Handle CLOSING state and wait for AGENT DISCONNECT frame
2025-04-30BUG/MEDIUM: mux-spop: Wait end of handshake to declare a spop connection ready
2025-04-29BUG/MINOR: dns: prevent ds accumulation within dss
2025-04-29BUG/MINOR: dns: add tempo between 2 connection attempts for dns servers
2025-04-29BUG/MINOR: acme: remove references to virt@acme
2025-04-29BUG/MINOR: quic: ensure cwnd limits are always enforced
2025-04-29BUG/MINOR: acme: creating an account should not end the task
2025-04-29BUG/MINOR: mux-h2: fix the offset of the pattern for the ping frame
2025-04-29BUG/MINOR: acme: does not try to unlock after a failed trylock
2025-04-28BUG/MINOR: ssl/acme: free EVP_PKEY upon error
2025-04-28MEDIUM: thread: set DEBUG_THREAD to 1 by default
2025-04-28MEDIUM: threads: keep history of taken locks with DEBUG_THREAD > 0
2025-04-28MINOR: threads: turn the full lock debugging to DEBUG_THREAD=2
2025-04-28MINOR: threads: prepare DEBUG_THREAD to receive more values
2025-04-25BUG/MAJOR: listeners: transfer connection accounting when switching listeners
2025-04-25BUG/MAJOR: tasklets: Make sure he tasklet can't run twice
2025-04-25BUG/MINOR: master/cli: only parse the '@@' prefix on complete lines
2025-04-25Revert "BUG/MINOR: master/cli: properly trim the '@@' process name in error messages"
2025-04-25BUG/MEDIUM: cli: Handle applet shutdown when waiting for a command line
2025-04-24BUG/MINOR: master/cli: properly trim the '@@' process name in error messages
2025-04-24BUG/MINOR: ring: Fix I/O handler of "show event" command to not rely on the SC
2025-04-24BUG/MINOR: hlua: Fix I/O handler of lua CLI commands to not rely on the SC
2025-04-24BUG/MINOR: cli: Issue an error when too many args are passed for a command
2025-04-24BUG/MINOR: mux-quic: do not decode if conn in error
2025-04-24BUG/MINOR: mux-quic: fix possible infinite loop during decoding
2025-04-22BUG/MEDIUM: mux-spop: Respect the negociated max-frame-size value to send frames

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