CVE-2021-28878
CVSS v3
7.5
HIGH
EPSS Score
2.0 %
exploit probability, as of 2026-10-19
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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Affected and fixed versions
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
rust: memory safety violation in Zip implementation when next_back() and next() are used together
Red Hat Security Advisory: rust-toolset:rhel8 security, bug fix, and enhancement update
Red Hat Security Advisory: rust-toolset-1.52 and rust-toolset-1.52-rust security and enhancement update
Description
In the standard library in Rust before 1.52.0, the Zip implementation calls __iterator_get_unchecked() more than once for the same index (under certain conditions) when next_back() and next() are used together. This bug could lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.
Technical details
- Published
- 2021-04-11
Frequently asked questions
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