CVE-2025-64031

libarchive 3.8.x before 3.8.2 has a strcpy heap-based buffer overflow in the gzip writer via the original-filename field to archive_compressor_gzip_open in archive_write_add_filter_gzip.c, aka GHSA-92wx-p669-8gr9. This relates to bsdtar. Exploitation envisions a marginally plausible scenario in which original-filename is obtained from an untrusted party. (original-filename is not derived from the input data.)

CVSS 3.1

2.5CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L

EPSS

0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-25)

CWE

CWE-122

Published

2026-09-14

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

References

• https://gist.github.com/ttuurrnn/1365a4a9b1c3d5826a3a9bbe111f26b8
• https://github.com/libarchive/libarchive/blob/master/libarchive/archive_write_add_filter_gzip.c
• https://github.com/libarchive/libarchive/pull/2734
• https://github.com/libarchive/libarchive/pull/2734/commits
• https://github.com/libarchive/libarchive/pull/2734/files

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