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Status published
Unknown
CVE-2021-20197
There is an open race window when writing output in...
Vulnerability Description
There is an open race window when writing output in the following utilities in GNU binutils version 2.35 and earlier:ar, objcopy, strip, ranlib. When these utilities are run as a privileged user (presumably as part of a script updating binaries across different users), an unprivileged user can trick these utilities into getting ownership of arbitrary files through a symlink.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
Affected Software
binutils
Vulnerable Versions:
binutils 2.35
Timeline
Official Publish:
March 26th, 2021
Last Modified:
December 3rd, 2025
Added to House:
July 21st, 2026
CVSS Vectors
No vector data available