CVE-2021-28877

medium
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
5.5

Description

In the standard library in Rust before 1.51.0, the Zip implementation calls __iterator_get_unchecked() for the same index more than once when nested. This bug can lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-28877

vendor Authored 2026-05-27

Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2021:3063

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-28877.html

OS impact

OSVersionStatusFixed in
arch archfixed1:1.51.0-1
suse slesaffected
rockylinux rocky8fixed
debian debianbookwormfixed1.53.0+dfsg1-1
debian debianbullseyeaffected
debian debianforkyfixed1.53.0+dfsg1-1
debian debiansidfixed1.53.0+dfsg1-1
debian debiantrixiefixed1.53.0+dfsg1-1

References

Verify integrity in audit chain (admin only). AS-IS.