Common Weakness Enumeration

CWE-125

Allowed

Out-of-bounds Read

Abstraction: Base · Status: Draft

The product reads data past the end, or before the beginning, of the intended buffer.

11411 vulnerabilities reference this CWE, most recent first.

GHSA-4667-XXV8-3PQ6

Vulnerability from github – Published: 2024-10-21 21:30 – Updated: 2024-10-24 18:30
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

iio: health: afe4403: Fix oob read in afe4403_read_raw

KASAN report out-of-bounds read as follows:

BUG: KASAN: global-out-of-bounds in afe4403_read_raw+0x42e/0x4c0 Read of size 4 at addr ffffffffc02ac638 by task cat/279

Call Trace: afe4403_read_raw iio_read_channel_info dev_attr_show

The buggy address belongs to the variable: afe4403_channel_leds+0x18/0xffffffffffffe9e0

This issue can be reproduced by singe command:

$ cat /sys/bus/spi/devices/spi0.0/iio\:device0/in_intensity6_raw

The array size of afe4403_channel_leds is less than channels, so access with chan->address cause OOB read in afe4403_read_raw. Fix it by moving access before use it.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-49031"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T20:15:13Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: health: afe4403: Fix oob read in afe4403_read_raw\n\nKASAN report out-of-bounds read as follows:\n\nBUG: KASAN: global-out-of-bounds in afe4403_read_raw+0x42e/0x4c0\nRead of size 4 at addr ffffffffc02ac638 by task cat/279\n\nCall Trace:\n afe4403_read_raw\n iio_read_channel_info\n dev_attr_show\n\nThe buggy address belongs to the variable:\n afe4403_channel_leds+0x18/0xffffffffffffe9e0\n\nThis issue can be reproduced by singe command:\n\n $ cat /sys/bus/spi/devices/spi0.0/iio\\:device0/in_intensity6_raw\n\nThe array size of afe4403_channel_leds is less than channels, so access\nwith chan-\u003eaddress cause OOB read in afe4403_read_raw. Fix it by moving\naccess before use it.",
  "id": "GHSA-4667-xxv8-3pq6",
  "modified": "2024-10-24T18:30:42Z",
  "published": "2024-10-21T21:30:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49031"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/06c6ce21cec77dfa860d57e7a006000a57812efb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2d6a437064ffbe685c67ddb16dfc0946074c6c3f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58143c1ed5882c138a3cd2251a336fc8755f23d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/726fa3e4ab97dcff1c745bdc4fb137366cb8d3df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/98afcb5f3be645d330c74c5194ba0d80e26f95e0"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1756af172fb80a3edc143772d49e166ec691b6c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9268df36818ee4eaaaeadc80009b442a5ca69c9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e7e76a77aabef8989cbc0a8417af1aa040620867"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-466G-X784-C529

Vulnerability from github – Published: 2022-01-04 00:00 – Updated: 2022-01-13 00:01
VLAI
Details

Possible out of bound read due to lack of domain input validation while processing APK close session request in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Wearables

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2021-30336"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-01-03T08:15:00Z",
    "severity": "HIGH"
  },
  "details": "Possible out of bound read due to lack of domain input validation while processing APK close session request in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Industrial IOT, Snapdragon Wearables",
  "id": "GHSA-466g-x784-c529",
  "modified": "2022-01-13T00:01:39Z",
  "published": "2022-01-04T00:00:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-30336"
    },
    {
      "type": "WEB",
      "url": "https://www.qualcomm.com/company/product-security/bulletins/december-2021-bulletin"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-467W-QM37-MP96

Vulnerability from github – Published: 2022-05-24 16:46 – Updated: 2022-05-24 16:46
VLAI
Details

Adobe Acrobat and Reader versions 2019.010.20069 and earlier, 2019.010.20069 and earlier, 2017.011.30113 and earlier version, and 2015.006.30464 and earlier have an out-of-bounds read vulnerability. Successful exploitation could lead to information disclosure.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2019-7036"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-05-24T19:29:00Z",
    "severity": "HIGH"
  },
  "details": "Adobe Acrobat and Reader versions 2019.010.20069 and earlier, 2019.010.20069 and earlier, 2017.011.30113 and earlier version, and 2015.006.30464 and earlier have an out-of-bounds read vulnerability. Successful exploitation could lead to information disclosure.",
  "id": "GHSA-467w-qm37-mp96",
  "modified": "2022-05-24T16:46:39Z",
  "published": "2022-05-24T16:46:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-7036"
    },
    {
      "type": "WEB",
      "url": "https://helpx.adobe.com/security/products/acrobat/apsb19-07.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

GHSA-46C4-Q95P-8FGW

Vulnerability from github – Published: 2024-03-11 21:31 – Updated: 2024-11-15 00:31
VLAI
Details

In ProtocolPsKeepAliveStatusAdapter::getCode() of protocolpsadapter.cpp, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with baseband firmware compromise required. User interaction is not needed for exploitation.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-27230"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-03-11T19:15:48Z",
    "severity": "MODERATE"
  },
  "details": "In ProtocolPsKeepAliveStatusAdapter::getCode() of protocolpsadapter.cpp, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with baseband firmware compromise required. User interaction is not needed for exploitation.",
  "id": "GHSA-46c4-q95p-8fgw",
  "modified": "2024-11-15T00:31:50Z",
  "published": "2024-03-11T21:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-27230"
    },
    {
      "type": "WEB",
      "url": "https://source.android.com/security/bulletin/pixel/2024-03-01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-46CJ-7V75-QQVJ

Vulnerability from github – Published: 2025-09-02 21:30 – Updated: 2025-09-02 21:30
VLAI
Details

Foxit PDF Reader PRC File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of PRC files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-26802.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2025-9324"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-02T21:15:34Z",
    "severity": "LOW"
  },
  "details": "Foxit PDF Reader PRC File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.\n\nThe specific flaw exists within the parsing of PRC files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated object. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-26802.",
  "id": "GHSA-46cj-7v75-qqvj",
  "modified": "2025-09-02T21:30:59Z",
  "published": "2025-09-02T21:30:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-9324"
    },
    {
      "type": "WEB",
      "url": "https://www.foxit.com/support/security-bulletins.html"
    },
    {
      "type": "WEB",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-25-868"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-46CQ-2JQF-RQ53

Vulnerability from github – Published: 2022-12-13 18:30 – Updated: 2022-12-15 15:32
VLAI
Details

In fdt_path_offset_namelen of fdt_ro.c, there is a possible out of bounds read due to an incorrect bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12L Android-13Android ID: A-246465319

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2022-20498"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-12-13T16:15:00Z",
    "severity": "MODERATE"
  },
  "details": "In fdt_path_offset_namelen of fdt_ro.c, there is a possible out of bounds read due to an incorrect bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12L Android-13Android ID: A-246465319",
  "id": "GHSA-46cq-2jqf-rq53",
  "modified": "2022-12-15T15:32:13Z",
  "published": "2022-12-13T18:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-20498"
    },
    {
      "type": "WEB",
      "url": "https://source.android.com/security/bulletin/2022-12-01"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-46F6-CWR6-VH3Q

Vulnerability from github – Published: 2025-01-28 00:32 – Updated: 2025-11-03 21:32
VLAI
Details

An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in iPadOS 17.7.4, visionOS 2.2, tvOS 18.2, watchOS 11.2, iOS 18.2 and iPadOS 18.2, macOS Sonoma 14.7.2, macOS Sequoia 15.2. Processing maliciously crafted web content may lead to an unexpected process crash.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-54478"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-01-27T22:15:12Z",
    "severity": "MODERATE"
  },
  "details": "An out-of-bounds access issue was addressed with improved bounds checking. This issue is fixed in iPadOS 17.7.4, visionOS 2.2, tvOS 18.2, watchOS 11.2, iOS 18.2 and iPadOS 18.2, macOS Sonoma 14.7.2, macOS Sequoia 15.2. Processing maliciously crafted web content may lead to an unexpected process crash.",
  "id": "GHSA-46f6-cwr6-vh3q",
  "modified": "2025-11-03T21:32:24Z",
  "published": "2025-01-28T00:32:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-54478"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/121837"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/121839"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/121840"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/121843"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/121844"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/121845"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/en-us/122067"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2025/Jan/14"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-46H8-9XPR-RF6W

Vulnerability from github – Published: 2022-05-24 17:14 – Updated: 2022-05-24 17:14
VLAI
Details

An issue was discovered in OpenEXR before 2.4.1. There is an out-of-bounds read in ImfOptimizedPixelReading.h.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2020-11758"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-04-14T23:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in OpenEXR before 2.4.1. There is an out-of-bounds read in ImfOptimizedPixelReading.h.",
  "id": "GHSA-46h8-9xpr-rf6w",
  "modified": "2022-05-24T17:14:41Z",
  "published": "2022-05-24T17:14:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-11758"
    },
    {
      "type": "WEB",
      "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1987"
    },
    {
      "type": "WEB",
      "url": "https://github.com/AcademySoftwareFoundation/openexr/blob/master/CHANGES.md#version-241-february-11-2020"
    },
    {
      "type": "WEB",
      "url": "https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v2.4.1"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2020/08/msg00056.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/F4KFGDQG5PVYAU7TS5MZ7XCS6EMPVII3"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202107-27"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT211288"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT211289"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT211290"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT211291"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT211293"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT211294"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT211295"
    },
    {
      "type": "WEB",
      "url": "https://usn.ubuntu.com/4339-1"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2020/dsa-4755"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00051.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-46HR-Q4HP-W8V2

Vulnerability from github – Published: 2022-05-14 02:21 – Updated: 2022-05-14 02:21
VLAI
Details

Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel 2016, Office Compatibility Pack SP3, Excel Viewer, Excel Services on SharePoint Server 2007 SP3, and Excel Services on SharePoint Server 2010 SP2 allow remote attackers to obtain sensitive information from process memory or cause a denial of service (out-of-bounds read) via a crafted document, aka "Microsoft Office Information Disclosure Vulnerability."

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2016-7265"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2016-12-20T06:59:00Z",
    "severity": "HIGH"
  },
  "details": "Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel 2016, Office Compatibility Pack SP3, Excel Viewer, Excel Services on SharePoint Server 2007 SP3, and Excel Services on SharePoint Server 2010 SP2 allow remote attackers to obtain sensitive information from process memory or cause a denial of service (out-of-bounds read) via a crafted document, aka \"Microsoft Office Information Disclosure Vulnerability.\"",
  "id": "GHSA-46hr-q4hp-w8v2",
  "modified": "2022-05-14T02:21:53Z",
  "published": "2022-05-14T02:21:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2016-7265"
    },
    {
      "type": "WEB",
      "url": "https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-148"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/94721"
    },
    {
      "type": "WEB",
      "url": "http://www.securitytracker.com/id/1037441"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GHSA-46JX-3CG2-9964

Vulnerability from github – Published: 2024-08-17 09:30 – Updated: 2026-05-12 12:32
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

ext4: check dot and dotdot of dx_root before making dir indexed

Syzbot reports a issue as follows:

BUG: unable to handle page fault for address: ffffed11022e24fe PGD 23ffee067 P4D 23ffee067 PUD 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 PID: 5079 Comm: syz-executor306 Not tainted 6.10.0-rc5-g55027e689933 #0 Call Trace: make_indexed_dir+0xdaf/0x13c0 fs/ext4/namei.c:2341 ext4_add_entry+0x222a/0x25d0 fs/ext4/namei.c:2451 ext4_rename fs/ext4/namei.c:3936 [inline] ext4_rename2+0x26e5/0x4370 fs/ext4/namei.c:4214 [...] ============================================

The immediate cause of this problem is that there is only one valid dentry for the block to be split during do_split, so split==0 results in out of bounds accesses to the map triggering the issue.

do_split
  unsigned split
  dx_make_map
   count = 1
  split = count/2 = 0;
  continued = hash2 == map[split - 1].hash;
   ---> map[4294967295]

The maximum length of a filename is 255 and the minimum block size is 1024, so it is always guaranteed that the number of entries is greater than or equal to 2 when do_split() is called.

But syzbot's crafted image has no dot and dotdot in dir, and the dentry distribution in dirblock is as follows:

bus dentry1 hole dentry2 free |xx--|xx-------------|...............|xx-------------|...............| 0 12 (8+248)=256 268 256 524 (8+256)=264 788 236 1024

So when renaming dentry1 increases its name_len length by 1, neither hole nor free is sufficient to hold the new dentry, and make_indexed_dir() is called.

In make_indexed_dir() it is assumed that the first two entries of the dirblock must be dot and dotdot, so bus and dentry1 are left in dx_root because they are treated as dot and dotdot, and only dentry2 is moved to the new leaf block. That's why count is equal to 1.

Therefore add the ext4_check_dx_root() helper function to add more sanity checks to dot and dotdot before starting the conversion to avoid the above issue.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2024-42305"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-08-17T09:15:10Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: check dot and dotdot of dx_root before making dir indexed\n\nSyzbot reports a issue as follows:\n============================================\nBUG: unable to handle page fault for address: ffffed11022e24fe\nPGD 23ffee067 P4D 23ffee067 PUD 0\nOops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI\nCPU: 0 PID: 5079 Comm: syz-executor306 Not tainted 6.10.0-rc5-g55027e689933 #0\nCall Trace:\n \u003cTASK\u003e\n make_indexed_dir+0xdaf/0x13c0 fs/ext4/namei.c:2341\n ext4_add_entry+0x222a/0x25d0 fs/ext4/namei.c:2451\n ext4_rename fs/ext4/namei.c:3936 [inline]\n ext4_rename2+0x26e5/0x4370 fs/ext4/namei.c:4214\n[...]\n============================================\n\nThe immediate cause of this problem is that there is only one valid dentry\nfor the block to be split during do_split, so split==0 results in out of\nbounds accesses to the map triggering the issue.\n\n    do_split\n      unsigned split\n      dx_make_map\n       count = 1\n      split = count/2 = 0;\n      continued = hash2 == map[split - 1].hash;\n       ---\u003e map[4294967295]\n\nThe maximum length of a filename is 255 and the minimum block size is 1024,\nso it is always guaranteed that the number of entries is greater than or\nequal to 2 when do_split() is called.\n\nBut syzbot\u0027s crafted image has no dot and dotdot in dir, and the dentry\ndistribution in dirblock is as follows:\n\n  bus     dentry1          hole           dentry2           free\n|xx--|xx-------------|...............|xx-------------|...............|\n0   12 (8+248)=256  268     256     524 (8+256)=264 788     236     1024\n\nSo when renaming dentry1 increases its name_len length by 1, neither hole\nnor free is sufficient to hold the new dentry, and make_indexed_dir() is\ncalled.\n\nIn make_indexed_dir() it is assumed that the first two entries of the\ndirblock must be dot and dotdot, so bus and dentry1 are left in dx_root\nbecause they are treated as dot and dotdot, and only dentry2 is moved\nto the new leaf block. That\u0027s why count is equal to 1.\n\nTherefore add the ext4_check_dx_root() helper function to add more sanity\nchecks to dot and dotdot before starting the conversion to avoid the above\nissue.",
  "id": "GHSA-46jx-3cg2-9964",
  "modified": "2026-05-12T12:32:04Z",
  "published": "2024-08-17T09:30:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42305"
    },
    {
      "type": "WEB",
      "url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19e13b4d7f0303186fcc891aba8d0de7c8fdbda8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/42d420517072028fb0eb852c358056b7717ba5aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/50ea741def587a64e08879ce6c6a30131f7111e7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8afe06ed3be7a874b3cd82ef5f8959aca8d6429a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9d241b7a39af192d1bb422714a458982c7cc67a2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/abb411ac991810c0bcbe51c2e76d2502bf611b5c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b80575ffa98b5bb3a5d4d392bfe4c2e03e9557db"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cdd345321699042ece4a9d2e70754d2397d378c5"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

Mitigation MIT-5
Implementation

Strategy: Input Validation

  • Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
  • To reduce the likelihood of introducing an out-of-bounds read, ensure that you validate and ensure correct calculations for any length argument, buffer size calculation, or offset. Be especially careful of relying on a sentinel (i.e. special character such as NUL) in untrusted inputs.
Mitigation
Architecture and Design

Strategy: Language Selection

Use a language that provides appropriate memory abstractions.

CAPEC-540: Overread Buffers

An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.