GHSA-43w2-9j62-hq99

Suggest an improvement
Source
https://github.com/advisories/GHSA-43w2-9j62-hq99
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-43w2-9j62-hq99/GHSA-43w2-9j62-hq99.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-43w2-9j62-hq99
Aliases
Published
2022-05-24T17:40:21Z
Modified
2023-11-08T04:05:16.493284Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Buffer overflow in SmallVec::insert_many
Details

A bug in the SmallVec::insertmany method caused it to allocate a buffer that was smaller than needed. It then wrote past the end of the buffer, causing a buffer overflow and memory corruption on the heap. This bug was only triggered if the iterator passed to insertmany yielded more items than the lower bound returned from its size_hint method.

The flaw was corrected in smallvec 0.6.14 and 1.6.1, by ensuring that additional space is always reserved for each item inserted. The fix also simplified the implementation of insert_many to use less unsafe code, so it is easier to verify its correctness.

Database specific
{
    "nvd_published_at": "2021-01-26T18:16:00Z",
    "cwe_ids": [
        "CWE-787"
    ],
    "severity": "CRITICAL",
    "github_reviewed": true,
    "github_reviewed_at": "2022-06-17T00:20:48Z"
}
References

Affected packages

crates.io / smallvec

Package

Affected ranges

Type
SEMVER
Events
Introduced
0.6.3
Fixed
0.6.14

Ecosystem specific

{
    "affected_functions": [
        "smallvec::SmallVec::insert_many"
    ]
}

crates.io / smallvec

Package

Affected ranges

Type
SEMVER
Events
Introduced
1.0.0
Fixed
1.6.1

Ecosystem specific

{
    "affected_functions": [
        "smallvec::SmallVec::insert_many"
    ]
}