CWE-131
AllowedIncorrect Calculation of Buffer Size
Abstraction: Base · Status: Draft
The product does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow.
270 vulnerabilities reference this CWE, most recent first.
GHSA-6GQV-38Q3-6C47
Vulnerability from github – Published: 2023-02-16 09:30 – Updated: 2025-02-13 18:31In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, core path resolution function allocate buffer one byte too small. When resolving paths with lengths close to system MAXPATHLEN setting, this may lead to the byte after the allocated buffer being overwritten with NUL value, which might lead to unauthorized data access or modification.
{
"affected": [],
"aliases": [
"CVE-2023-0568"
],
"database_specific": {
"cwe_ids": [
"CWE-131",
"CWE-770"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-02-16T07:15:00Z",
"severity": "CRITICAL"
},
"details": "In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, core path resolution function allocate buffer one byte too small. When resolving paths with lengths close to system MAXPATHLEN setting, this may lead to the byte after the allocated buffer being overwritten with NUL value, which might lead to unauthorized data access or modification.",
"id": "GHSA-6gqv-38q3-6c47",
"modified": "2025-02-13T18:31:24Z",
"published": "2023-02-16T09:30:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0568"
},
{
"type": "WEB",
"url": "https://bugs.php.net/bug.php?id=81746"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20230517-0001"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-6JVC-GM78-F98R
Vulnerability from github – Published: 2025-12-09 18:30 – Updated: 2025-12-09 18:30Out-of-bounds write in Azure Monitor Agent allows an authorized attacker to execute code over a network.
{
"affected": [],
"aliases": [
"CVE-2025-62550"
],
"database_specific": {
"cwe_ids": [
"CWE-131",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-09T18:16:00Z",
"severity": "HIGH"
},
"details": "Out-of-bounds write in Azure Monitor Agent allows an authorized attacker to execute code over a network.",
"id": "GHSA-6jvc-gm78-f98r",
"modified": "2025-12-09T18:30:46Z",
"published": "2025-12-09T18:30:46Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-62550"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62550"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-6M44-C224-92XX
Vulnerability from github – Published: 2022-04-30 18:15 – Updated: 2024-02-02 03:30Buffer overflow in FTP server in HPUX 11 allows remote attackers to execute arbitrary commands by creating a long pathname and calling the STAT command, which uses glob to generate long strings.
{
"affected": [],
"aliases": [
"CVE-2001-0248"
],
"database_specific": {
"cwe_ids": [
"CWE-131"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2001-06-18T04:00:00Z",
"severity": "HIGH"
},
"details": "Buffer overflow in FTP server in HPUX 11 allows remote attackers to execute arbitrary commands by creating a long pathname and calling the STAT command, which uses glob to generate long strings.",
"id": "GHSA-6m44-c224-92xx",
"modified": "2024-02-02T03:30:27Z",
"published": "2022-04-30T18:15:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2001-0248"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/6332"
},
{
"type": "WEB",
"url": "http://www.cert.org/advisories/CA-2001-07.html"
},
{
"type": "WEB",
"url": "http://www.nai.com/research/covert/advisories/048.asp"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/2552"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-6RF3-H8VX-H8MV
Vulnerability from github – Published: 2023-03-28 21:30 – Updated: 2023-04-05 06:30This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1.0.52543. 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 JP2 images. Crafted data in a JP2 image can trigger a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-16187.
{
"affected": [],
"aliases": [
"CVE-2022-24908"
],
"database_specific": {
"cwe_ids": [
"CWE-125",
"CWE-131"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-03-28T19:15:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader 11.1.0.52543. 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 JP2 images. Crafted data in a JP2 image can trigger a read past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-16187.",
"id": "GHSA-6rf3-h8vx-h8mv",
"modified": "2023-04-05T06:30:19Z",
"published": "2023-03-28T21:30:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-24908"
},
{
"type": "WEB",
"url": "https://www.foxit.com/support/security-bulletins.html"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-22-351"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-746G-HG8C-J9CG
Vulnerability from github – Published: 2022-04-30 18:15 – Updated: 2024-02-02 03:30Heap overflow in FTP daemon in Solaris 8 allows remote attackers to execute arbitrary commands by creating a long pathname and calling the LIST command, which uses glob to generate long strings.
{
"affected": [],
"aliases": [
"CVE-2001-0249"
],
"database_specific": {
"cwe_ids": [
"CWE-131"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2001-06-18T04:00:00Z",
"severity": "HIGH"
},
"details": "Heap overflow in FTP daemon in Solaris 8 allows remote attackers to execute arbitrary commands by creating a long pathname and calling the LIST command, which uses glob to generate long strings.",
"id": "GHSA-746g-hg8c-j9cg",
"modified": "2024-02-02T03:30:27Z",
"published": "2022-04-30T18:15:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2001-0249"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/6332"
},
{
"type": "WEB",
"url": "http://www.cert.org/advisories/CA-2001-07.html"
},
{
"type": "WEB",
"url": "http://www.nai.com/research/covert/advisories/048.asp"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/2550"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-74VQ-JPR9-J6WJ
Vulnerability from github – Published: 2024-08-14 15:31 – Updated: 2026-05-12 12:32In the Linux kernel, the following vulnerability has been resolved:
drm/i915/gem: Fix Virtual Memory mapping boundaries calculation
Calculating the size of the mapped area as the lesser value between the requested size and the actual size does not consider the partial mapping offset. This can cause page fault access.
Fix the calculation of the starting and ending addresses, the total size is now deduced from the difference between the end and start addresses.
Additionally, the calculations have been rewritten in a clearer and more understandable form.
[Joonas: Add Requires: tag] Requires: 60a2066c5005 ("drm/i915/gem: Adjust vma offset for framebuffer mmap offset") (cherry picked from commit 97b6784753da06d9d40232328efc5c5367e53417)
{
"affected": [],
"aliases": [
"CVE-2024-42259"
],
"database_specific": {
"cwe_ids": [
"CWE-131"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-08-14T15:15:31Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/i915/gem: Fix Virtual Memory mapping boundaries calculation\n\nCalculating the size of the mapped area as the lesser value\nbetween the requested size and the actual size does not consider\nthe partial mapping offset. This can cause page fault access.\n\nFix the calculation of the starting and ending addresses, the\ntotal size is now deduced from the difference between the end and\nstart addresses.\n\nAdditionally, the calculations have been rewritten in a clearer\nand more understandable form.\n\n[Joonas: Add Requires: tag]\nRequires: 60a2066c5005 (\"drm/i915/gem: Adjust vma offset for framebuffer mmap offset\")\n(cherry picked from commit 97b6784753da06d9d40232328efc5c5367e53417)",
"id": "GHSA-74vq-jpr9-j6wj",
"modified": "2026-05-12T12:32:03Z",
"published": "2024-08-14T15:31:18Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-42259"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/html/ssa-265688.html"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3e06073d24807f04b4694108a8474decb7b99e60"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4b09513ce93b3dcb590baaaff2ce96f2d098312d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/50111a8098fb9ade621eeff82228a997d42732ab"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8bdd9ef7e9b1b2a73e394712b72b22055e0e26c3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/911f8055f175c82775d0fd8cedcd0b75413f4ba7"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a256d019eaf044864c7e50312f0a65b323c24f39"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e8a68aa842d3f8dd04a46b9d632e5f67fde1da9b"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ead9289a51ea82eb5b27029fcf4c34b2dd60cf06"
},
{
"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"
},
{
"type": "WEB",
"url": "https://project-zero.issues.chromium.org/issues/42451707"
}
],
"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"
}
]
}
GHSA-762H-VPVW-3RCX
Vulnerability from github – Published: 2022-11-21 20:40 – Updated: 2022-11-21 20:40Impact
When tf.raw_ops.FusedResizeAndPadConv2D is given a large tensor shape, it overflows.
import tensorflow as tf
mode = "REFLECT"
strides = [1, 1, 1, 1]
padding = "SAME"
resize_align_corners = False
input = tf.constant(147, shape=[3,3,1,1], dtype=tf.float16)
size = tf.constant([1879048192,1879048192], shape=[2], dtype=tf.int32)
paddings = tf.constant([3,4], shape=[2], dtype=tf.int32)
filter = tf.constant(123, shape=[1,3,4,1], dtype=tf.float16)
tf.raw_ops.FusedResizeAndPadConv2D(input=input, size=size, paddings=paddings, filter=filter, mode=mode, strides=strides, padding=padding, resize_align_corners=resize_align_corners)
Patches
We have patched the issue in GitHub commit d66e1d568275e6a2947de97dca7a102a211e01ce.
The fix will be included in TensorFlow 2.11. We will also cherrypick this commit on TensorFlow 2.10.1, 2.9.3, and TensorFlow 2.8.4, as these are also affected and still in supported range.
For more information
Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.
Attribution
This vulnerability has been reported by Neophytos Christou from the Secure Systems Lab (SSL) at Brown University.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.7.4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow"
},
"ranges": [
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}
],
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]
},
{
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},
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}
]
},
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"ecosystem": "PyPI",
"name": "tensorflow-cpu"
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"name": "tensorflow-cpu"
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]
},
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"ecosystem": "PyPI",
"name": "tensorflow-gpu"
},
"ranges": [
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{
"introduced": "2.8.0"
},
{
"fixed": "2.8.1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "PyPI",
"name": "tensorflow-cpu"
},
"ranges": [
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"introduced": "2.9.0"
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{
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],
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},
{
"package": {
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"name": "tensorflow-gpu"
},
"ranges": [
{
"events": [
{
"introduced": "2.9.0"
},
{
"fixed": "2.9.1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-41885"
],
"database_specific": {
"cwe_ids": [
"CWE-131"
],
"github_reviewed": true,
"github_reviewed_at": "2022-11-21T20:40:42Z",
"nvd_published_at": "2022-11-18T22:15:00Z",
"severity": "MODERATE"
},
"details": "### Impact\nWhen [`tf.raw_ops.FusedResizeAndPadConv2D`](https://github.com/tensorflow/tensorflow/blob/master/tensorflow/core/kernels/conv_ops_fused_image_transform.cc) is given a large tensor shape, it overflows.\n```python\nimport tensorflow as tf\n\nmode = \"REFLECT\"\nstrides = [1, 1, 1, 1]\npadding = \"SAME\"\nresize_align_corners = False\ninput = tf.constant(147, shape=[3,3,1,1], dtype=tf.float16)\nsize = tf.constant([1879048192,1879048192], shape=[2], dtype=tf.int32)\npaddings = tf.constant([3,4], shape=[2], dtype=tf.int32)\nfilter = tf.constant(123, shape=[1,3,4,1], dtype=tf.float16)\ntf.raw_ops.FusedResizeAndPadConv2D(input=input, size=size, paddings=paddings, filter=filter, mode=mode, strides=strides, padding=padding, resize_align_corners=resize_align_corners)\n```\n\n### Patches\nWe have patched the issue in GitHub commit [d66e1d568275e6a2947de97dca7a102a211e01ce](https://github.com/tensorflow/tensorflow/commit/d66e1d568275e6a2947de97dca7a102a211e01ce).\n\nThe fix will be included in TensorFlow 2.11. We will also cherrypick this commit on TensorFlow 2.10.1, 2.9.3, and TensorFlow 2.8.4, as these are also affected and still in supported range.\n\n\n### For more information\nPlease consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions.\n\n\n### Attribution\nThis vulnerability has been reported by Neophytos Christou from the Secure Systems Lab (SSL) at Brown University.\n",
"id": "GHSA-762h-vpvw-3rcx",
"modified": "2022-11-21T20:40:42Z",
"published": "2022-11-21T20:40:42Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/security/advisories/GHSA-762h-vpvw-3rcx"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-41885"
},
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/commit/d66e1d568275e6a2947de97dca7a102a211e01ce"
},
{
"type": "PACKAGE",
"url": "https://github.com/tensorflow/tensorflow"
},
{
"type": "WEB",
"url": "https://github.com/tensorflow/tensorflow/blob/master/tensorflow/core/kernels/conv_ops_fused_image_transform.cc"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Overflow in `FusedResizeAndPadConv2D`"
}
GHSA-76J2-HF4J-XJHQ
Vulnerability from github – Published: 2022-08-23 00:00 – Updated: 2023-05-03 15:30An out-of-bounds memory access flaw was found in the Linux kernel Intel’s iSMT SMBus host controller driver in the way a user triggers the I2C_SMBUS_BLOCK_DATA (with the ioctl I2C_SMBUS) with malicious input data. This flaw allows a local user to crash the system.
{
"affected": [],
"aliases": [
"CVE-2022-2873"
],
"database_specific": {
"cwe_ids": [
"CWE-131"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-22T15:15:00Z",
"severity": "MODERATE"
},
"details": "An out-of-bounds memory access flaw was found in the Linux kernel Intel\u2019s iSMT SMBus host controller driver in the way a user triggers the I2C_SMBUS_BLOCK_DATA (with the ioctl I2C_SMBUS) with malicious input data. This flaw allows a local user to crash the system.",
"id": "GHSA-76j2-hf4j-xjhq",
"modified": "2023-05-03T15:30:16Z",
"published": "2022-08-23T00:00:17Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-2873"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html"
},
{
"type": "WEB",
"url": "https://lore.kernel.org/lkml/20220729093451.551672-1-zheyuma97@gmail.com/T"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20230120-0001"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2023/dsa-5324"
}
],
"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"
}
]
}
GHSA-77RV-4WJP-CFHF
Vulnerability from github – Published: 2022-11-09 12:00 – Updated: 2022-11-09 19:02In typec, there is a possible out of bounds write due to an incorrect calculation of buffer size. This could lead to local escalation of privilege, for an attacker who has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07262454; Issue ID: ALPS07262454.
{
"affected": [],
"aliases": [
"CVE-2022-32618"
],
"database_specific": {
"cwe_ids": [
"CWE-131"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-08T21:15:00Z",
"severity": "MODERATE"
},
"details": "In typec, there is a possible out of bounds write due to an incorrect calculation of buffer size. This could lead to local escalation of privilege, for an attacker who has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07262454; Issue ID: ALPS07262454.",
"id": "GHSA-77rv-4wjp-cfhf",
"modified": "2022-11-09T19:02:23Z",
"published": "2022-11-09T12:00:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-32618"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/November-2022"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-78JW-WW3G-9WP7
Vulnerability from github – Published: 2026-06-17 18:35 – Updated: 2026-07-13 15:31NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_proxy_v2_module and ngx_http_grpc_module modules. This vulnerability exists when the proxy_http_version to 2 or grpc_pass directives are used to proxy HTTP/2 traffic, the ignore_invalid_headers directive is set to off, and the large_client_header_buffers directive size is larger than 2 megabytes. A remote, unauthenticated attacker, along with conditions beyond their control, could send large headers while creating an upstream request. This may cause a heap-based buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
{
"affected": [],
"aliases": [
"CVE-2026-42055"
],
"database_specific": {
"cwe_ids": [
"CWE-122",
"CWE-131",
"CWE-787"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-06-17T15:16:50Z",
"severity": "CRITICAL"
},
"details": "NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_proxy_v2_module\u00a0and ngx_http_grpc_module\u00a0modules. This vulnerability exists when the proxy_http_version to 2\u00a0or grpc_pass\u00a0directives are used to proxy HTTP/2 traffic, the ignore_invalid_headers\u00a0directive is set to off, and the large_client_header_buffers\u00a0directive size is larger than 2 megabytes. A remote, unauthenticated attacker, along with conditions beyond their control, could send large headers while creating an upstream request. This may cause a heap-based buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR. \n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.",
"id": "GHSA-78jw-ww3g-9wp7",
"modified": "2026-07-13T15:31:39Z",
"published": "2026-06-17T18:35:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42055"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:27197"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36331"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36364"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36618"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:36639"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:38847"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-42055"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2489866"
},
{
"type": "WEB",
"url": "https://my.f5.com/manage/s/article/K000161584"
},
{
"type": "WEB",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42055.json"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
Mitigation
When allocating a buffer for the purpose of transforming, converting, or encoding an input, allocate enough memory to handle the largest possible encoding. For example, in a routine that converts "&" characters to "&" for HTML entity encoding, the output buffer needs to be at least 5 times as large as the input buffer.
Mitigation MIT-36
- Understand the programming language's underlying representation and how it interacts with numeric calculation (CWE-681). Pay close attention to byte size discrepancies, precision, signed/unsigned distinctions, truncation, conversion and casting between types, "not-a-number" calculations, and how the language handles numbers that are too large or too small for its underlying representation. [REF-7]
- Also be careful to account for 32-bit, 64-bit, and other potential differences that may affect the numeric representation.
Mitigation MIT-8
Strategy: Input Validation
Perform input validation on any numeric input by ensuring that it is within the expected range. Enforce that the input meets both the minimum and maximum requirements for the expected range.
Mitigation MIT-15
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation
When processing structured incoming data containing a size field followed by raw data, identify and resolve any inconsistencies between the size field and the actual size of the data (CWE-130).
Mitigation
When allocating memory that uses sentinels to mark the end of a data structure - such as NUL bytes in strings - make sure you also include the sentinel in your calculation of the total amount of memory that must be allocated.
Mitigation MIT-13
Replace unbounded copy functions with analogous functions that support length arguments, such as strcpy with strncpy. Create these if they are not available.
Mitigation
Use sizeof() on the appropriate data type to avoid CWE-467.
Mitigation
Use the appropriate type for the desired action. For example, in C/C++, only use unsigned types for values that could never be negative, such as height, width, or other numbers related to quantity. This will simplify validation and will reduce surprises related to unexpected casting.
Mitigation MIT-4
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
- Use libraries or frameworks that make it easier to handle numbers without unexpected consequences, or buffer allocation routines that automatically track buffer size.
- Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++). [REF-106]
Mitigation MIT-10
Strategy: Environment Hardening
- Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
- D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Mitigation MIT-11
Strategy: Environment Hardening
- Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
- Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
- For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].
Mitigation MIT-12
Strategy: Environment Hardening
- Use a CPU and operating system that offers Data Execution Protection (using hardware NX or XD bits) or the equivalent techniques that simulate this feature in software, such as PaX [REF-60] [REF-61]. These techniques ensure that any instruction executed is exclusively at a memory address that is part of the code segment.
- For more information on these techniques see D3-PSEP (Process Segment Execution Prevention) from D3FEND [REF-1336].
Mitigation MIT-26
Strategy: Compilation or Build Hardening
Examine compiler warnings closely and eliminate problems with potential security implications, such as signed / unsigned mismatch in memory operations, or use of uninitialized variables. Even if the weakness is rarely exploitable, a single failure may lead to the compromise of the entire system.
Mitigation MIT-17
Strategy: Environment Hardening
Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
Mitigation MIT-22
Strategy: Sandbox or Jail
- Run the code in a "jail" or similar sandbox environment that enforces strict boundaries between the process and the operating system. This may effectively restrict which files can be accessed in a particular directory or which commands can be executed by the software.
- OS-level examples include the Unix chroot jail, AppArmor, and SELinux. In general, managed code may provide some protection. For example, java.io.FilePermission in the Java SecurityManager allows the software to specify restrictions on file operations.
- This may not be a feasible solution, and it only limits the impact to the operating system; the rest of the application may still be subject to compromise.
- Be careful to avoid CWE-243 and other weaknesses related to jails.
CAPEC-100: Overflow Buffers
Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an adversary. As a consequence, an adversary is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the adversaries' choice.
CAPEC-47: Buffer Overflow via Parameter Expansion
In this attack, the target software is given input that the adversary knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.