In the standard library in Rust before 1.52.0, the Zip implementation calls __iterator_get_unchecked() more than once for the same index (un
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.
- Published
- Apr 11, 2021
- Updated
- Jun 16, 2026
- EPSS
- 2.0% · 80th percentile
- CWE
- CWE-119
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Report tools
Action score
31
Monitor
Low priority for now.
- CVSS
- 30 / 40 · 7.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 2.0%
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| rust-lang | rust | cpe:2.3:a:rust-lang:rust |
| fedoraproject | fedora | cpe:2.3:o:fedoraproject:fedora |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- fedoraproject fedora32
- fedoraproject fedora33
- fedoraproject fedora34
- rust-lang rustbefore 1.52.0
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | rustc | before 1.53.0+dfsg1-1 | 1.53.0+dfsg1-1 |
| Red Hat:devtools:2021 | rust-toolset-1.52 | before 0:1.52.1-1.el7_9 | 0:1.52.1-1.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-build | before 0:1.52.1-1.el7_9 | 0:1.52.1-1.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-cargo | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-cargo-doc | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-clippy | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-rls | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-runtime | before 0:1.52.1-1.el7_9 | 0:1.52.1-1.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-rust | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-rust-analysis | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-rust-debugger-common | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-rust-debuginfo | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-rust-doc | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-rust-gdb | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-rust-lldb | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-rust-src | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-rust-std-static | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:devtools:2021 | rust-toolset-1.52-rustfmt | before 0:1.52.1-2.el7_9 | 0:1.52.1-2.el7_9 |
| Red Hat:enterprise_linux:8::appstream | cargo | before 0:1.52.1-1.module+el8.4.0+11282+0729bac9 | 0:1.52.1-1.module+el8.4.0+11282+0729bac9 |
| Red Hat:enterprise_linux:8::appstream | cargo-debuginfo | before 0:1.52.1-1.module+el8.4.0+11282+0729bac9 | 0:1.52.1-1.module+el8.4.0+11282+0729bac9 |
| Red Hat:enterprise_linux:8::appstream | cargo-doc | before 0:1.52.1-1.module+el8.4.0+11282+0729bac9 | 0:1.52.1-1.module+el8.4.0+11282+0729bac9 |
| Red Hat:enterprise_linux:8::appstream | clippy | before 0:1.52.1-1.module+el8.4.0+11282+0729bac9 | 0:1.52.1-1.module+el8.4.0+11282+0729bac9 |
| Red Hat:enterprise_linux:8::appstream | clippy-debuginfo | before 0:1.52.1-1.module+el8.4.0+11282+0729bac9 | 0:1.52.1-1.module+el8.4.0+11282+0729bac9 |
| Red Hat:enterprise_linux:8::appstream | rls | before 0:1.52.1-1.module+el8.4.0+11282+0729bac9 | 0:1.52.1-1.module+el8.4.0+11282+0729bac9 |
+16
Same product
rust-lang: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-31162In the standard library in Rust before 1.52.0, a double free can occur in the Vec::from_iter function if freeing the element panics.40Plan
- CVE-2021-28879In the standard library in Rust before 1.52.0, the Zip implementation can report an incorrect size due to an integer overflow.40Plan
- CVE-2020-36318In the standard library in Rust before 1.49.0, VecDeque::make_contiguous has a bug that pops the same element more than once under certain c40Plan
- CVE-2018-1000810The Rust Programming Language Standard Library version 1.29.0, 1.28.0, 1.27.2, 1.27.1, 127.0, 126.2, 126.1, 126.0 contains a CWE-680: Intege40Plan
- CVE-2021-29922library/std/src/net/parser.rs in Rust before 1.53.0 does not properly consider extraneous zero characters at the beginning of an IP address 37Monitor
- CVE-2024-43402Rust OS Command Injection/Argument Injection vulnerability35Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:rustc | 1.53.0+dfsg1-1 · Debian:12 | Package registry (OSV) |
| red hat:rust-toolset-1.52 | 0:1.52.1-1.el7_9 · Red Hat:devtools:2021 | Package registry (OSV) |
| red hat:rust-toolset-1.52-build | 0:1.52.1-1.el7_9 · Red Hat:devtools:2021 | Package registry (OSV) |
| red hat:rust-toolset-1.52-cargo | 0:1.52.1-2.el7_9 · Red Hat:devtools:2021 | Package registry (OSV) |
| red hat:rust-toolset-1.52-cargo-doc | 0:1.52.1-2.el7_9 · Red Hat:devtools:2021 | Package registry (OSV) |
| red hat:rust-toolset-1.52-clippy | 0:1.52.1-2.el7_9 · Red Hat:devtools:2021 | Package registry (OSV) |
| red hat:rust-toolset-1.52-rls | 0:1.52.1-2.el7_9 · Red Hat:devtools:2021 | Package registry (OSV) |
| red hat:rust-toolset-1.52-runtime | 0:1.52.1-1.el7_9 · Red Hat:devtools:2021 | Package registry (OSV) |
| red hat:rust-toolset-1.52-rust | 0:1.52.1-2.el7_9 · Red Hat:devtools:2021 | Package registry (OSV) |
| red hat:rust-toolset-1.52-rust-analysis | 0:1.52.1-2.el7_9 · Red Hat:devtools:2021 | Package registry (OSV) |
| red hat:rust-toolset-1.52-rust-debugger-common | 0:1.52.1-2.el7_9 · Red Hat:devtools:2021 | Package registry (OSV) |
| red hat:rust-toolset-1.52-rust-debuginfo | 0:1.52.1-2.el7_9 · Red Hat:devtools:2021 | Package registry (OSV) |
| red hat:rust-toolset-1.52-rust-doc | 0:1.52.1-2.el7_9 · Red Hat:devtools:2021 | Package registry (OSV) |
| rocky linux:rust | 0:1.52.1-1.module+el8.4.0+641+ca238f88 · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:rust-toolset | 0:1.52.1-1.module+el8.4.0+641+ca238f88 · Rocky Linux:8 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- none
- Integrity
- none
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- None
- Integrity impact
- None
- Availability impact
- High
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- github.com/rust-lang/rust/pull/82292
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/
- security.gentoo.org/glsa/202210-09
Vendor advisories and official records. Exploit/PoC links are deliberately left out.