Vulnerability-Lookup

CVE-2026-52834 (GCVE-0-2026-52834)

Vulnerability from cvelistv5 – Published: 2026-08-19 14:55 – Updated: 2026-08-19 18:19

Title

jxl-oxide: Out-of-bounds writes due to integer overflow in jxl-grid on 32-bit platforms

Summary

jxl-oxide is a pure Rust implementation of a JPEG XL decoder. Prior to jxl-grid 0.6.2, decoding a crafted JPEG XL image on a 32-bit platform can overflow length calculations in AlignedGrid::with_alloc_tracker and related grid and subgrid arithmetic. A 65536 x 65536 frame can pass the frame-area limit while overflowing the usize element count, causing modular, VarDCT, or filter rendering paths to allocate a backing buffer smaller than the logical grid. A tiny bitstream-controlled cropped frame combined with a huge canvas or requested region can also reach the vulnerable composition path in crates/jxl-render/src/blend.rs through ordinary render_frame(). Later mutable subgrid and raw-pointer operations can then perform attacker-controlled out-of-bounds writes, causing memory corruption, denial of service, or arbitrary code execution. This issue is fixed in jxl-grid version 0.6.2.

Severity

7.3 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-19 18:03 UTC

CWE

CWE-122 - Heap-based Buffer Overflow
CWE-131 - Incorrect Calculation of Buffer Size
CWE-190 - Integer Overflow or Wraparound

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7886 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/tirr-c/jxl-oxide/security/advi…	x_refsource_CONFIRM
https://github.com/tirr-c/jxl-oxide/commit/3986da…	x_refsource_MISC
https://github.com/tirr-c/jxl-oxide/releases/tag/0.12.6	x_refsource_MISC
https://rustsec.org/advisories/RUSTSEC-2026-0151.html	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version	CPE status
tirr-c	jxl-oxide	Affected: < 0.12.6	guessed
tirr-c	jxl-grid	Affected: < 0.6.2	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-52834

Vulnerability from fkie_nvd - Published: 2026-08-19 15:17 - Updated: 2026-10-27 13:10

Severity

7.3 (High) - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/tirr-c/jxl-oxide/commit/3986dadd3926a95656a642e74a0702d52f5c92e2
	security-advisories@github.com	https://github.com/tirr-c/jxl-oxide/releases/tag/0.12.6
	security-advisories@github.com	https://github.com/tirr-c/jxl-oxide/security/advisories/GHSA-5pmv-rx8r-wmv5
	security-advisories@github.com	https://rustsec.org/advisories/RUSTSEC-2026-0151.html

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "jxl-oxide",
          "vendor": "tirr-c",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.12.6"
            }
          ]
        },
        {
          "product": "jxl-grid",
          "vendor": "tirr-c",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.6.2"
            }
          ]
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      ],
      "source": "security-advisories@github.com"
    }
  ],
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    {
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      "value": "jxl-oxide is a pure Rust implementation of a JPEG XL decoder. Prior to jxl-grid 0.6.2, decoding a crafted JPEG XL image on a 32-bit platform can overflow length calculations in AlignedGrid::with_alloc_tracker and related grid and subgrid arithmetic. A 65536 x 65536 frame can pass the frame-area limit while overflowing the usize element count, causing modular, VarDCT, or filter rendering paths to allocate a backing buffer smaller than the logical grid. A tiny bitstream-controlled cropped frame combined with a huge canvas or requested region can also reach the vulnerable composition path in crates/jxl-render/src/blend.rs through ordinary render_frame(). Later mutable subgrid and raw-pointer operations can then perform attacker-controlled out-of-bounds writes, causing memory corruption, denial of service, or arbitrary code execution. This issue is fixed in jxl-grid version 0.6.2."
    },
    {
      "lang": "es",
      "value": "jxl-oxide es una implementaci\u00f3n pura en Rust de un decodificador JPEG XL. Antes de jxl-grid 0.6.2, la decodificaci\u00f3n de una imagen JPEG XL manipulada en una plataforma de 32 bits puede desbordar los c\u00e1lculos de longitud en AlignedGrid::with_alloc_tracker y la aritm\u00e9tica relacionada de cuadr\u00edculas y subcuadr\u00edculas. Un fotograma de 65536 x 65536 puede superar el l\u00edmite del \u00e1rea del fotograma mientras desborda el recuento de elementos usize, haciendo que las rutas de renderizado modular, VarDCT o de filtro asignen un b\u00fafer de respaldo m\u00e1s peque\u00f1o que la cuadr\u00edcula l\u00f3gica. Un fotograma recortado peque\u00f1o controlado por el flujo de bits combinado con un lienzo enorme o una regi\u00f3n solicitada tambi\u00e9n puede alcanzar la ruta de composici\u00f3n vulnerable en crates/jxl-render/src/blend.rs a trav\u00e9s de render_frame() ordinario. Operaciones posteriores de subcuadr\u00edcula mutable y puntero sin procesar pueden entonces realizar escrituras fuera de l\u00edmites controladas por el atacante, causando corrupci\u00f3n de memoria, denegaci\u00f3n de servicio o ejecuci\u00f3n de c\u00f3digo arbitrario. Este problema est\u00e1 solucionado en la versi\u00f3n 0.6.2 de jxl-grid."
    }
  ],
  "id": "CVE-2026-52834",
  "lastModified": "2026-10-27T13:10:00.360",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.4,
        "impactScore": 5.3,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-52834",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-19T18:03:40.919161Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-19T15:17:09.810",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tirr-c/jxl-oxide/commit/3986dadd3926a95656a642e74a0702d52f5c92e2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tirr-c/jxl-oxide/releases/tag/0.12.6"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/tirr-c/jxl-oxide/security/advisories/GHSA-5pmv-rx8r-wmv5"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0151.html"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-122"
        },
        {
          "lang": "en",
          "value": "CWE-131"
        },
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-5PMV-RX8R-WMV5

Vulnerability from github – Published: 2026-07-02 20:45 – Updated: 2026-07-02 20:45

Summary

jxl-grid on 32-bit platforms has an out-of-bounds writes due to integer overflow

Details

Summary

On 32-bit platforms, decoding a crafted image may lead to out-of-bounds writes due to integer overflow in length calculation.

Details & PoC

The test listed below fail under miri with command cargo +nightly miri test --release -p jxl-grid

Or you can use Address Sanitizer, which ignores Rust-specific UB like aliasing but still flags out-of-bounds accesses:

RUSTFLAGS=-Zsanitizer=address cargo +nightly test -Zbuild-std -p jxl-grid --release --target x86_64-unknown-linux-gnu

The following tests should be appended to crates/jxl-grid/src/test/subgrids.rs:

mod miri_ub {
    use super::*;

    // `AlignedGrid::with_alloc_tracker` computes `width * height` unchecked. In release, overflow
    // can create a tiny backing buffer for huge logical dimensions.
    #[test]
    fn aligned_grid_dimension_product_overflows() {
        let width = usize::MAX / 2 + 1;
        let mut grid = AlignedGrid::<u8>::with_alloc_tracker(width, 2, None).unwrap();
        let mut subgrid = grid.as_subgrid_mut();
        *subgrid.get_mut(0, 1) = 1;
        std::hint::black_box(grid);
    }
}

This issue can be reachable through decoding a crafted image in two ways:

Huge actual frame A frame such as 65536 x 65536 passes the current frame area limit (2^32 <= 2^40) but overflows usize element count on 32-bit. Rendering then allocates too-small AlignedGrids in modular/VarDCT/filter paths and later writes through mutable subgrids.
Huge canvas plus tiny cropped frame This is the more practical “small payload, huge logical output” case. A bitstream-controlled frame crop can be tiny, but if the canvas/default requested region is huge, composition can allocate an output grid sized to the canvas/ROI at crates/jxl-render/src/blend.rs. That is bitstream frame cropping, not API crop. With a 32-bit target and a full requested image region whose area overflows, this can happen through ordinary render_frame().

Impact

On 32-bit platforms this can cause out-of-bounds writes with attacker-controlled data when decoding a crafted JPEG XL image. This could allow arbitrary code execution.

Severity

7.3 (High)


                  
                    CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.6.1"
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "jxl-grid"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-52834"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-122",
      "CWE-131",
      "CWE-190"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-02T20:45:59Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Summary\n\nOn 32-bit platforms, decoding a crafted image may lead to out-of-bounds writes due to integer overflow in length calculation.\n\n### Details \u0026 PoC\n\nThe test listed below fail under miri with command `cargo +nightly miri test --release -p jxl-grid`\n\nOr you can use Address Sanitizer, which ignores Rust-specific UB like aliasing but still flags out-of-bounds accesses:\n\n`RUSTFLAGS=-Zsanitizer=address cargo +nightly test -Zbuild-std -p jxl-grid --release --target x86_64-unknown-linux-gnu`\n\nThe following tests should be appended to `crates/jxl-grid/src/test/subgrids.rs`:\n\n```rust\nmod miri_ub {\n    use super::*;\n\n    // `AlignedGrid::with_alloc_tracker` computes `width * height` unchecked. In release, overflow\n    // can create a tiny backing buffer for huge logical dimensions.\n    #[test]\n    fn aligned_grid_dimension_product_overflows() {\n        let width = usize::MAX / 2 + 1;\n        let mut grid = AlignedGrid::\u003cu8\u003e::with_alloc_tracker(width, 2, None).unwrap();\n        let mut subgrid = grid.as_subgrid_mut();\n        *subgrid.get_mut(0, 1) = 1;\n        std::hint::black_box(grid);\n    }\n}\n```\n\nThis issue can be reachable through decoding a crafted image in two ways:\n\n1. **Huge actual frame**\n   A frame such as `65536 x 65536` passes the current frame area limit (`2^32 \u003c= 2^40`) but overflows `usize` element count on 32-bit. Rendering then allocates too-small `AlignedGrid`s in modular/VarDCT/filter paths and later writes through mutable subgrids.\n\n2. **Huge canvas plus tiny cropped frame**\n   This is the more practical \u201csmall payload, huge logical output\u201d case. A bitstream-controlled frame crop can be tiny, but if the canvas/default requested region is huge, composition can allocate an output grid sized to the canvas/ROI at crates/jxl-render/src/blend.rs. That is bitstream frame cropping, not API crop. With a 32-bit target and a full requested image region whose area overflows, this can happen through ordinary `render_frame()`.\n\n### Impact\n\nOn 32-bit platforms this can cause out-of-bounds writes with attacker-controlled data when decoding a crafted JPEG XL image. This could allow arbitrary code execution.",
  "id": "GHSA-5pmv-rx8r-wmv5",
  "modified": "2026-07-02T20:45:59Z",
  "published": "2026-07-02T20:45:59Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tirr-c/jxl-oxide/security/advisories/GHSA-5pmv-rx8r-wmv5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/tirr-c/jxl-oxide"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0151.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "jxl-grid on 32-bit platforms has an out-of-bounds writes due to integer overflow"
}

RUSTSEC-2026-0151 (CVE-2026-52834)

Vulnerability from osv_rustsec – Published: 2026-05-29 12:00 – Updated: 2026-10-12 17:47 – Source website

Summary

Out-of-bounds writes due to integer overflow in jxl-grid on 32-bit platforms

Details

On 32-bit platforms, decoding a crafted image may lead to out-of-bounds writes due to integer overflow in length calculation. This could allow arbitrary code execution.

Details & PoC

The test listed below fail under miri with command cargo +nightly miri test --release -p jxl-grid

Or you can use Address Sanitizer, which ignores Rust-specific UB like aliasing but still flags out-of-bounds accesses:

RUSTFLAGS=-Zsanitizer=address cargo +nightly test -Zbuild-std -p jxl-grid --release --target x86_64-unknown-linux-gnu

The following tests should be appended to crates/jxl-grid/src/test/subgrids.rs:

mod miri_ub {
    use super::*;

    // `AlignedGrid::with_alloc_tracker` computes `width * height` unchecked. In release, overflow
    // can create a tiny backing buffer for huge logical dimensions.
    #[test]
    fn aligned_grid_dimension_product_overflows() {
        let width = usize::MAX / 2 + 1;
        let mut grid = AlignedGrid::<u8>::with_alloc_tracker(width, 2, None).unwrap();
        let mut subgrid = grid.as_subgrid_mut();
        *subgrid.get_mut(0, 1) = 1;
        std::hint::black_box(grid);
    }
}

This issue can be reachable through decoding a crafted image in two ways:

Huge actual frame A frame such as 65536 x 65536 passes the current frame area limit (2^32 <= 2^40) but overflows usize element count on 32-bit. Rendering then allocates too-small AlignedGrids in modular/VarDCT/filter paths and later writes through mutable subgrids.
Huge canvas plus tiny cropped frame This is the more practical “small payload, huge logical output” case. A bitstream-controlled frame crop can be tiny, but if the canvas/default requested region is huge, composition can allocate an output grid sized to the canvas/ROI at crates/jxl-render/src/blend.rs. That is bitstream frame cropping, not API crop. With a 32-bit target and a full requested image region whose area overflows, this can happen through ordinary render_frame().

References

URL

Type

	https://crates.io/crates/jxl-grid	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2026-0151.html	ADVISORY
	https://github.com/tirr-c/jxl-oxide/commit/3986da…	WEB

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-corruption"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "jxl-grid",
        "purl": "pkg:cargo/jxl-grid"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.6.2"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2026-52834",
    "GHSA-5pmv-rx8r-wmv5"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "On 32-bit platforms, decoding a crafted image may lead to out-of-bounds writes due to integer overflow in length calculation. This could allow arbitrary code execution.\n\n### Details \u0026 PoC\n\nThe test listed below fail under miri with command `cargo +nightly miri test --release -p jxl-grid`\n\nOr you can use Address Sanitizer, which ignores Rust-specific UB like aliasing but still flags out-of-bounds accesses:\n\n`RUSTFLAGS=-Zsanitizer=address cargo +nightly test -Zbuild-std -p jxl-grid --release --target x86_64-unknown-linux-gnu`\n\nThe following tests should be appended to `crates/jxl-grid/src/test/subgrids.rs`:\n\n```rust\nmod miri_ub {\n    use super::*;\n\n    // `AlignedGrid::with_alloc_tracker` computes `width * height` unchecked. In release, overflow\n    // can create a tiny backing buffer for huge logical dimensions.\n    #[test]\n    fn aligned_grid_dimension_product_overflows() {\n        let width = usize::MAX / 2 + 1;\n        let mut grid = AlignedGrid::\u003cu8\u003e::with_alloc_tracker(width, 2, None).unwrap();\n        let mut subgrid = grid.as_subgrid_mut();\n        *subgrid.get_mut(0, 1) = 1;\n        std::hint::black_box(grid);\n    }\n}\n```\n\nThis issue can be reachable through decoding a crafted image in two ways:\n\n1. **Huge actual frame**\n   A frame such as `65536 x 65536` passes the current frame area limit (`2^32 \u003c= 2^40`) but overflows `usize` element count on 32-bit. Rendering then allocates too-small `AlignedGrid`s in modular/VarDCT/filter paths and later writes through mutable subgrids.\n\n2. **Huge canvas plus tiny cropped frame**\n   This is the more practical \u201csmall payload, huge logical output\u201d case. A bitstream-controlled frame crop can be tiny, but if the canvas/default requested region is huge, composition can allocate an output grid sized to the canvas/ROI at crates/jxl-render/src/blend.rs. That is bitstream frame cropping, not API crop. With a 32-bit target and a full requested image region whose area overflows, this can happen through ordinary `render_frame()`.",
  "id": "RUSTSEC-2026-0151",
  "modified": "2026-10-12T17:47:59Z",
  "published": "2026-05-29T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/jxl-grid"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0151.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tirr-c/jxl-oxide/commit/3986dadd3926a95656a642e74a0702d52f5c92e2"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Out-of-bounds writes due to integer overflow in jxl-grid on 32-bit platforms"
}

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.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

CVE-2026-52834 (GCVE-0-2026-52834)

FKIE_CVE-2026-52834

GHSA-5PMV-RX8R-WMV5

Summary

Details & PoC

Impact

RUSTSEC-2026-0151 (CVE-2026-52834)

Details & PoC

Tags

Sightings

Nomenclature

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Related by attack behaviour