What's the rational to want to push for a newer version at this point of
the cycle and what sort of testing was done to ensure it's not including
potential regressions? The security fixes are included as patches in the
current package revision...

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https://bugs.launchpad.net/bugs/2037527

Title:
  [Ffe] libwebp

Status in libwebp package in Ubuntu:
  Incomplete

Bug description:
  - 9/13/2023: version 1.3.2
    This is a binary compatible release.
    * security fix for lossless decoder (chromium: #1479274, CVE-2023-4863)

  - 6/23/2023: version 1.3.1
    This is a binary compatible release.
    * security fixes for lossless encoder (#603, chromium: #1420107, #1455619,
      CVE-2023-1999)
    * improve error reporting through WebPPicture error codes
    * fix upsampling for RGB565 and RGBA4444 in NEON builds
    * img2webp: add -sharp_yuv & -near_lossless
    * Windows builds:
      - fix compatibility with clang-cl (#607)
      - improve Arm64 performance with cl.exe
      - add Arm64EC support
    * fix webp_js with emcc >= 3.1.27 (stack size change, #614)
    * CMake fixes (#592, #610, #612)
    * further updates to the container and lossless bitstream docs (#581, #611)

  - 12/16/2022: version 1.3.0
    This is a binary compatible release.
    * add libsharpyuv, which exposes -sharp_yuv/config.use_sharp_yuv
      functionality to other libraries; libwebp now depends on this library
    * major updates to the container and lossless bitstream docs (#448, #546,
      #551)
    * miscellaneous warning, bug & build fixes (#576, #583, #584)

  Moreover the LP: #2013083 can be closed in this release.

  The non-bugfix changes are related to a new library added, that is
  used probably by firefox and chromium (next releases? or maybe they
  are using the embedded library)

  Changes since mantic version 1.2.4-0.3
  ======================================
  libwebp (1.3.2-0.3) unstable; urgency=medium

    * Non-maintainer upload.
    * Fix invalid incremental decoding check. (Closes: #1052447)
    * Fix next is invalid pointer when WebPSafeMalloc fails
    * Fix static analyzer warnings.

   -- Salvatore Bonaccorso  Fri, 22 Sep 2023 09:41:18 +0200

  libwebp (1.3.2-0.2) unstable; urgency=medium

    * Non-maintainer upload.
    * debian/control: Add missing dependency libwebp-dev => libsharpyuv-dev.
      (Closes: #1052355)

   -- Boyuan Yang   Wed, 20 Sep 2023 15:59:13 -0400

  libwebp (1.3.2-0.1) unstable; urgency=medium

    * Non-maintainer upload.
    * Upload to unstable.

   -- Boyuan Yang   Wed, 20 Sep 2023 11:03:28 -0400

  libwebp (1.3.2-0.1~exp2) experimental; urgency=medium

    * Non-maintainer upload.

    [ Gianfranco Costamagna ]
    * Also install .a files again.
    * Make sure we have built and installed anim_dump and anim_diff.
      (Closes: #1023482)

   -- Boyuan Yang   Fri, 15 Sep 2023 14:41:40 -0400

  libwebp (1.3.2-0.1~exp1) experimental; urgency=medium

    * Non-maintainer upload.
    * New upstream release 1.3.2.
      + The 1.3.x branch introduces libsharpyuv, which will be introduced
        as separate Debian binary packages. (Closes: #1040970)
      + CVE-2023-4863 is handled in this release. (LP: #2035220)
    * debian/gbp.conf: Use ignore-branch=True to avoid limitation on
      experimental branch.
    * debian/control:
      + Drop unnecessary build-dependency on autotools-related packages.
      + Add build-dependency on pkg-config.
      + Migrate buildsystem to cmake. (Closes: #1040972, LP: #2013083)
      + Apply RPATH-related hotfix before debhelper compat level 14.
      + Add new binary packages: libsharpyuv-dev, libsharpyuv0,
        libwebpdecoder3.
    * debian/libwebp-dev.install: Do not install static library anymore
      since CMake is not building them by default.
    * debian/rules:
      + Enforce --buildsystem=cmake.
      + Drop explicit option --enable-aligned, this option has been removed
        by libwebp upstream (see upstream ChangeLog).
    * debian/docs: Rename to libwebp-dev.docs to avoid confusion.
    * debian/patches: Drop all old patches, merged upstream.
    * debian/patches/:
      + 0001-CMakeLists.txt-Install-CMake-Config-to-arch-dep-loca.patch:
        Add patch to install CMake Config files to architecture-dependent
        location instead to retain Multi-Arch property of dev packages.
    * debian/copyright: Completely rewritten in machine-readable copyright
      format.

   -- Boyuan Yang   Thu, 14 Sep 2023 22:22:30 -0400

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