mport is the MidnightBSD Package Manager. Prior to 2.7.8, do_actual_install() in libmport/bundle_read_install_pkg.c used path-based lstat(), chown(), stat(), and chmod() operations while installing package files. A local attacker with write access to a target directory could replace a checked file with a symlink before privileged ownership or mode changes were applied, redirecting those changes to an attacker-selected path and compromising filesystem integrity or permissions. This issue is fixed in version 2.7.8.
Metrics
Affected Vendors & Products
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Fixes
Solution
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Workaround
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References
History
Thu, 17 Sep 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | mport is the MidnightBSD Package Manager. Prior to 2.7.8, do_actual_install() in libmport/bundle_read_install_pkg.c used path-based lstat(), chown(), stat(), and chmod() operations while installing package files. A local attacker with write access to a target directory could replace a checked file with a symlink before privileged ownership or mode changes were applied, redirecting those changes to an attacker-selected path and compromising filesystem integrity or permissions. This issue is fixed in version 2.7.8. | |
| Title | mport package installation has symlink TOCTOU in chown and chmod handling | |
| Weaknesses | CWE-367 CWE-59 |
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cvssV4_0
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Projects
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-17T16:58:25.028Z
Reserved: 2026-06-15T19:15:27.343Z
Link: CVE-2026-54576
Vulnrichment
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NVD
Status : Received
Published: 2026-09-17T17:16:42.570
Modified: 2026-09-17T17:16:42.570
Link: CVE-2026-54576
Redhat
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OpenCVE Enrichment
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