GHSA-66M8-C62J-H6V5
Vulnerability from github – Published: 2026-07-02 20:45 – Updated: 2026-07-02 20:45
VLAI
Summary
jxl-oxide: `FrameBuffer::new` creates out-of-bounds slices on overflow
Details
Summary
jxl-oxide exposes a public safe API that can construct an undersized FrameBuffer due to unchecked usize multiplication, which immediately trigger panic while initializing the buffer in normal decoding path.
Additionally, calling the safe grouped buffer accessors afterward can create invalid oversized slices from a much smaller allocation, causing undefined behavior; however normal decoding path never reaches UB, because these methods are never used within jxl-oxide.
Impact
On 32-bit platforms this can cause panic by accessing out-of-range indices, making it a DoS vulnerability.
Severity
6.2 (Medium)
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 0.12.5"
},
"package": {
"ecosystem": "crates.io",
"name": "jxl-oxide"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.12.6"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-131",
"CWE-190"
],
"github_reviewed": true,
"github_reviewed_at": "2026-07-02T20:45:10Z",
"nvd_published_at": null,
"severity": "MODERATE"
},
"details": "### Summary\n`jxl-oxide` exposes a public safe API that can construct an undersized `FrameBuffer` due to unchecked `usize` multiplication, which immediately trigger panic while initializing the buffer in normal decoding path.\n\nAdditionally, calling the safe grouped buffer accessors afterward can create invalid oversized slices from a much smaller allocation, causing undefined behavior; however normal decoding path never reaches UB, because these methods are never used within `jxl-oxide`.\n\n### Impact\nOn 32-bit platforms this can cause panic by accessing out-of-range indices, making it a DoS vulnerability.",
"id": "GHSA-66m8-c62j-h6v5",
"modified": "2026-07-02T20:45:10Z",
"published": "2026-07-02T20:45:10Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/tirr-c/jxl-oxide/security/advisories/GHSA-66m8-c62j-h6v5"
},
{
"type": "PACKAGE",
"url": "https://github.com/tirr-c/jxl-oxide"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "jxl-oxide: `FrameBuffer::new` creates out-of-bounds slices on overflow"
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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