GHSA-9pwq-gcrx-wghh

Suggest an improvement
Source
https://github.com/advisories/GHSA-9pwq-gcrx-wghh
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-9pwq-gcrx-wghh/GHSA-9pwq-gcrx-wghh.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-9pwq-gcrx-wghh
Aliases
Published
2026-08-28T18:33:58Z
Modified
2026-08-28T18:45:07Z
Severity
  • 5.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Buffa has a Use-After-Free in OwnedView via Unsound 'static Lifetime Promotion in Deref
Details

A soundness bug in buffa's OwnedView<V> allowed safe Rust code to trigger a use-after-free. The OwnedView::decode constructor transmuted a borrowed slice to &'static [u8], and the Deref implementation exposed the promoted 'static lifetime on borrowed view fields (such as &'static str and &'static [u8]) to callers. Because these references appeared to be 'static, the borrow checker permitted them to outlive the OwnedView; once the OwnedView was dropped and its backing buffer freed, those references became dangling, enabling memory corruption, information disclosure of freed heap contents, and cross-thread misuse — all without any unsafe code in the calling application. Users are advised to update to the latest patched version of buffa.

Thank you to hackerone.com/suul for reporting this issue.

Database specific 
{
    "cwe_ids": [
        "CWE-200",
        "CWE-416"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-28T18:33:58Z",
    "nvd_published_at": "2026-07-16T17:16:57Z",
    "severity": "MODERATE"
}
References

Affected packages

crates.io / buffa

Package

Name
buffa
View open source insights on deps.dev
Purl
pkg:cargo/buffa

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.7.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-9pwq-gcrx-wghh/GHSA-9pwq-gcrx-wghh.json"