[Bug]: Error during scan: exif_read_data(): Process tag(x0000=UndefinedTag): Illegal format code 0x0000, suppose BYTE

[andreaskoelsch]

⚠️ This issue respects the following points: ⚠️

• [X] This is a bug, not a question or a configuration/webserver/proxy issue.
• [X] This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• [X] Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• [X] I agree to follow Nextcloud's Code of Conduct.

Bug description

I have a few photos which cause an error when running occ files:scan --generate-metadata --path="user/files/testimages/" -v. The errors read as follows with different offsets.

Error during scan: exif_read_data(): Process tag(x0000=UndefinedTag): Illegal format code 0x0000, suppose BYTE
Error during scan: exif_read_data(): Process tag(x0000=UndefinedTag): Illegal pointer offset(x8520000 + xFFAA = x852FFAA > x60B4DC)

The files themselves seem okay. I can show them and everything seems fine. However, the error messages are annoying. How can I debug this issue?

Steps to reproduce

1. Upload image to Nextcloud
2. run occ files:scan --generate-metadata --path="user/files/testimages/" -v
3. See error

Expected behavior

No error

Installation method

Community Manual installation with Archive

Nextcloud Server version

28

Operating system

Debian/Ubuntu

PHP engine version

PHP 8.2

Web server

Nginx

Database engine version

MariaDB

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

What user-backends are you using?

• [X] Default user-backend (database)
• [ ] LDAP/ Active Directory
• [ ] SSO - SAML
• [ ] Other

Configuration report

No response

List of activated Apps

No response

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

I'm happy to share a file which produces the error