Patch Package OTP 27.3.4.11 Released

[Erlang/OTP]

Patch Package:           OTP 27.3.4.11
Git Tag:                 OTP-27.3.4.11
Date:                    2026-04-21
Trouble Report Id:       OTP-20081, OTP-20086, OTP-20094, OTP-20098,
                         OTP-20101
Seq num:                 CVE-2026-32147, GH-10667, GH-10967, PR-10976,
                         PR-10985, PR-11002, PR-11027
System:                  OTP
Release:                 27
Application:             erts-15.2.7.8, mnesia-4.23.5.2, ssh-5.2.11.7
Predecessor:             OTP 27.3.4.10

Check out the git tag OTP-27.3.4.11, and build a full OTP system including
documentation. Apply one or more applications from this build as patches to your
installation using the 'otp_patch_apply' tool. For information on install
requirements, see descriptions for each application version below.

# OTP-27.3.4.11

## Fixed Bugs and Malfunctions

- Fix the `otp_patch_apply` script to properly handle installation of
  documentation for OTP versions with more than one digit in version parts less
  significant than the major version.

  Own Id: OTP-20086
  Related Id(s): PR-10985

# erts-15.2.7.8

The erts-15.2.7.8 application can be applied independently of other applications
on a full OTP 27 installation.

## Fixed Bugs and Malfunctions

- Fixed bug in `enif_make_map_from_arrays` for arrays with at least 33 keys. If
  duplicate keys existed, instead of failing, it would skip the duplicates. If
  less than 33 unique keys existed, an internally inconsistent and broken map
  was returned.

  Own Id: OTP-20098
  Related Id(s): PR-10976

- Fixed an issue when supplying the args_file option to erl.exe on windows that
  did not handle unicode characters correctly.

  Own Id: OTP-20101
  Related Id(s): GH-10667

> #### Full runtime dependencies of erts-15.2.7.8
>
> kernel-9.0, sasl-3.3, stdlib-4.1

# mnesia-4.23.5.2

The mnesia-4.23.5.2 application can be applied independently of other
applications on a full OTP 27 installation.

## Fixed Bugs and Malfunctions

- Fixed a bug where stacktrace was not returned from mnesia:transaction/1 when
  transaction aborts with an error exception.

  Own Id: OTP-20094
  Related Id(s): GH-10967, PR-11002

> #### Full runtime dependencies of mnesia-4.23.5.2
>
> erts-9.0, kernel-5.3, stdlib-5.0

# ssh-5.2.11.7

The ssh-5.2.11.7 application can be applied independently of other applications
on a full OTP 27 installation.

## Fixed Bugs and Malfunctions

- Fixed a vulnerability in the SFTP server where file attributes could be
  modified outside the configured root directory. When using FSETSTAT on an open
  file handle, the operation used the path stored in the handle without
  verifying it was within the root directory, allowing attribute changes to
  files outside the chroot boundary.

  Thanks to John Downey.

  Own Id: OTP-20081
  Related Id(s): PR-11027, CVE-2026-32147

> #### Full runtime dependencies of ssh-5.2.11.7
>
> crypto-5.0, erts-14.0, kernel-9.0, public_key-1.6.1, runtime_tools-1.15.1,
> stdlib-5.0, stdlib-6.0

# Thanks to

Nick Vatamaniuc