HAProxy known bugs for maintenance branch 2.7 : 9

This is maintenance branch 2.7 whose latest version is 2.7.2. 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 2.7 version other than 2.7.2, you're running with known bugs.

Quick links

full changelog for 2.7 : here
browse history for 2.7 : here

Versions available in this branch

This branch contains the following releases :

Date Version Comment

2023-01-20 2.7.2 ⇐ last

2022-12-19 2.7.1

2022-12-01 2.7.0

Date	Version	Comment
2023-01-20	2.7.2	⇐ last
2022-12-19	2.7.1
2022-12-01	2.7.0

Fixes for known bugs pending in this branch since the last release (2.7.2)

These fixes have already been queued for the next 2.7 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 :

MINOR: the bug presents a limited impact and can easily be mitigated ; users rarely upgrade just for these ones ;
MEDIUM: the bug can cause some undesired behaviour and may require some tricky configuration changes to avoid hitting it ; users normally upgrade to get rid of them, or temporarily disable a functionality.
MAJOR: the bug affects short term reliability and cannot easily be worked around without a significant performance penalty or without a significant functional loss ; such bugs don't stay long in the queue without a release and users must plan an upgrade as soon as possible ;
CRITICAL: this one very rarely happens ; it indicates a short-term reliability or security issue for which there is no workaround. A release will be emitted for this fix even if it's alone and users are urged to upgrade immediately. Some distro maintainers might have been informed in advance in order to agree on a coordinated release date.

Total known bugs in the latest version of this branch by category :

Total CRITICAL MAJOR MEDIUM MINOR

9 0 0 2 7

Total	CRITICAL	MAJOR	MEDIUM	MINOR
9	0	0	2	7

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

Merge date Subject - Severity (minor, medium, major, critical)

2023-01-26 BUG/MINOR: sink: free the forwarding task on exit

2023-01-26 BUG/MINOR: ring: release the backing store name on exit

2023-01-26 BUG/MINOR: log: release global log servers on exit

2023-01-26 BUG/MEDIUM: hpack: fix incorrect huffman decoding of some control chars

2023-01-26 BUG/MEDIUM: mux-quic: fix crash on H3 SETTINGS emission

2023-01-26 BUG/MINOR: h3: fix GOAWAY emission

2023-01-26 MINOR: connection: add a BUG_ON() to detect destroying connection in idle list

2023-01-26 BUG/MINOR: sink: make sure to always properly unmap a file-backed ring

2023-01-23 BUG/MINOR: quic: Do not request h3 clients to close its unidirection streams

2023-01-20 BUG/MINOR: jwt: Wrong return value checked

Merge date	Subject - Severity (minor, medium, major, critical)
2023-01-26	BUG/MINOR: sink: free the forwarding task on exit
2023-01-26	BUG/MINOR: ring: release the backing store name on exit
2023-01-26	BUG/MINOR: log: release global log servers on exit
2023-01-26	BUG/MEDIUM: hpack: fix incorrect huffman decoding of some control chars
2023-01-26	BUG/MEDIUM: mux-quic: fix crash on H3 SETTINGS emission
2023-01-26	BUG/MINOR: h3: fix GOAWAY emission
2023-01-26	MINOR: connection: add a BUG_ON() to detect destroying connection in idle list
2023-01-26	BUG/MINOR: sink: make sure to always properly unmap a file-backed ring
2023-01-23	BUG/MINOR: quic: Do not request h3 clients to close its unidirection streams
2023-01-20	BUG/MINOR: jwt: Wrong return value checked

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.

Date Subject

2023-02-03 BUG/MEDIUM: quic: do not split STREAM frames if no space

2023-02-03 BUG/MINOR: quic: Unchecked source connection ID

2023-02-03 BUG/MAJOR: quic: Possible crash when processing 1-RTT during 0-RTT session

2023-02-03 BUG/MINOR: quic: Do not ignore coalesced packets in qc_prep_fast_retrans()

2023-02-03 BUG/MINOR: quic: Too big PTO during handshakes

2023-02-03 BUG/MINOR: quic: Possible stream truncations under heavy loss

2023-02-02 BUG/MINOR: stats: use proper buffer size for http dump

2023-02-02 BUG/MEDIUM: thread: consider secondary threads as idle+harmless during boot

2023-01-31 BUG/MINOR: h3: fix crash due to h3 traces

2023-01-31 BUG/MINOR: h3: fix crash due to h3 traces

2023-01-31 BUG/MEDIUM: ssl: wrong eviction from the session cache tree

2023-01-30 BUG/MINOR: h3: reject RESET_STREAM received for control stream

2023-01-30 BUG/MEDIUM: h3: handle STOP_SENDING on control stream

2023-01-30 BUG/MEDIUM: h3: do not crash if no buf space for trailers

2023-01-30 BUG/MINOR: http_ext/7239: ipv6 dumping relies on out of scope variables

2023-01-30 BUG/MINOR: mux-h2: Fix possible null pointer deref on h2c in _h2_trace_header()

Date	Subject
2023-02-03	BUG/MEDIUM: quic: do not split STREAM frames if no space
2023-02-03	BUG/MINOR: quic: Unchecked source connection ID
2023-02-03	BUG/MAJOR: quic: Possible crash when processing 1-RTT during 0-RTT session
2023-02-03	BUG/MINOR: quic: Do not ignore coalesced packets in qc_prep_fast_retrans()
2023-02-03	BUG/MINOR: quic: Too big PTO during handshakes
2023-02-03	BUG/MINOR: quic: Possible stream truncations under heavy loss
2023-02-02	BUG/MINOR: stats: use proper buffer size for http dump
2023-02-02	BUG/MEDIUM: thread: consider secondary threads as idle+harmless during boot
2023-01-31	BUG/MINOR: h3: fix crash due to h3 traces
2023-01-31	BUG/MINOR: h3: fix crash due to h3 traces
2023-01-31	BUG/MEDIUM: ssl: wrong eviction from the session cache tree
2023-01-30	BUG/MINOR: h3: reject RESET_STREAM received for control stream
2023-01-30	BUG/MEDIUM: h3: handle STOP_SENDING on control stream
2023-01-30	BUG/MEDIUM: h3: do not crash if no buf space for trailers
2023-01-30	BUG/MINOR: http_ext/7239: ipv6 dumping relies on out of scope variables
2023-01-30	BUG/MINOR: mux-h2: Fix possible null pointer deref on h2c in _h2_trace_header()

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