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From: Salvatore Bonaccorso &lt;carnil@debian.org&gt;
To: Debian Bug Tracking System &lt;submit@bugs.debian.org&gt;
Subject: rust-tar: CVE-2026-33055
Message-ID: &lt;177411863367.2363237.2237947009282826046.reportbug@eldamar.lan&gt;
X-Mailer: reportbug 13.2.0
Date: Sat, 21 Mar 2026 19:43:53 +0100
Delivered-To: submit@bugs.debian.org

Source: rust-tar
Version: 0.4.44-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team &lt;team@security.debian.org&gt;

Hi,

The following vulnerability was published for rust-tar.

CVE-2026-33055[0]:
| tar-rs is a tar archive reading/writing library for Rust. Versions
| 0.4.44 and below have conditional logic that skips the PAX size
| header in cases where the base header size is nonzero. As part of
| CVE-2025-62518, the astral-tokio-tar project was changed to
| correctly honor PAX size headers in the case where it was different
| from the base header. This is almost the inverse of the astral-
| tokio-tar issue. Any discrepancy in how tar parsers honor file size
| can be used to create archives that appear differently when unpacked
| by different archivers. In this case, the tar-rs (Rust tar) crate is
| an outlier in checking for the header size - other tar parsers
| (including e.g. Go archive/tar) unconditionally use the PAX size
| override. This can affect anything that uses the tar crate to parse
| archives and expects to have a consistent view with other parsers.
| This issue has been fixed in version 0.4.45.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities &amp; Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-33055
    https://www.cve.org/CVERecord?id=CVE-2026-33055
[1] https://github.com/alexcrichton/tar-rs/security/advisories/GHSA-gchp-q4r4-x4ff
[2] https://github.com/alexcrichton/tar-rs/commit/de1a5870e603758f430073688691165f21a33946

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore
]