list_item_verbose in tar/util.c in libarchive through 3.7.7 does not check an strftime return value, which can lead to a denial of service or unspecified other impact via a crafted TAR archive that is read with a verbose value of 2. For example, the 100-byte buffer may not be sufficient for a custom locale.

References

• https://nvd.nist.gov/vuln/detail/CVE-2025-25724
• https://gist.github.com/Ekkosun/a83870ce7f3b7813b9b462a395e8ad92
• https://github.com/Ekkosun/pocs/blob/main/bsdtarbug
• https://github.com/libarchive/libarchive/blob/b439d586f53911c84be5e380445a8a259e19114c/tar/util.c#L751-L752