Public bug reported:
During Upgrade process error is reported:
Could not install
/tmp/aot-dpkg-install-I9UXnt/33-cpp-14-x86-64-lunyx-gnu-14.3.0-14ubuntu1_admd64.deb
package may not be in a working state, please consider submutting a bug report
about it.
Cannot copy extrata data to //usrlibexec/gcc/x86_64-lunux-gnu/cc1 to
/usr/libexec/gcc/x86_64-linux/cc1.dbpg-new : unexpected end of file or
stream
After reboot cannot resolve the error with dbpg --configure etc..
upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/11.9 MB of archives.
After this operation, 8,192 B of additional disk space will be used.
Do you want to continue? [Y/n] y
(Reading database… 632952 files and directories currently installed.)
Preparing to unpack …/cpp-14-x86-64-linux-gnu_14.3.0-14ubuntu1_amd64.deb…
Unpacking cpp-14-x86-64-linux-gnu (14.3.0-14ubuntu1) over (14.3.0-8ubuntu1)…
dpkg-deb (subprocess): decompressing archive
'/var/cache/apt/archives/cpp-14-x86-64-linux-gnu_14.3.0-14ubuntu1_amd64.deb'
(size=11866708) member 'data.tar': zstd error: Restored data doesn't match
checksum
dpkg-deb: error: <decompress> subprocess failed with exit status 2
dpkg: error processing archive
/var/cache/apt/archives/cpp-14-x86-64-linux-gnu_14.3.0-14ubuntu1_amd64.deb
(--unpack):
cannot copy extracted data for './usr/libexec/gcc/x86_64-linux-gnu/14/cc1' to
'/usr/libexec/gcc/x86_64-linux-gnu/14/cc1.dpkg-new': unexpected end of file or
stream
Errors were encountered while processing:
/var/cache/apt/archives/cpp-14-x86-64-linux-gnu_14.3.0-14ubuntu1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
Why does Ubuntu not re-download the package if there is corruption ?
Why does Ubuntu not check the checksum after download ?
How to fix this.
** Affects: ubuntu
Importance: Undecided
Status: New
** Attachment added: "Screenshot From 2026-05-21 11-32-00.png"
https://bugs.launchpad.net/bugs/2153527/+attachment/5972165/+files/Screenshot%20From%202026-05-21%2011-32-00.png
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https://bugs.launchpad.net/bugs/2153527
Title:
Upgrade to 26.04 CPP-14-x86-64 failure checksum error
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