Lucene search

K
cvelistGitHub_MCVELIST:CVE-2020-26268
HistoryDec 10, 2020 - 10:10 p.m.

CVE-2020-26268 Write to immutable memory region in TensorFlow

2020-12-1022:10:35
CWE-471
GitHub_M
www.cve.org

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

LOW

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

5.6 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.8%

In affected versions of TensorFlow the tf.raw_ops.ImmutableConst operation returns a constant tensor created from a memory mapped file which is assumed immutable. However, if the type of the tensor is not an integral type, the operation crashes the Python interpreter as it tries to write to the memory area. If the file is too small, TensorFlow properly returns an error as the memory area has fewer bytes than what is needed for the tensor it creates. However, as soon as there are enough bytes, the above snippet causes a segmentation fault. This is because the allocator used to return the buffer data is not marked as returning an opaque handle since the needed virtual method is not overridden. This is fixed in versions 1.15.5, 2.0.4, 2.1.3, 2.2.2, 2.3.2, and 2.4.0.

CNA Affected

[
  {
    "product": "tensorflow",
    "vendor": "tensorflow",
    "versions": [
      {
        "status": "affected",
        "version": "< 1.15.5"
      },
      {
        "status": "affected",
        "version": ">= 2.0.0, < 2.0.4"
      },
      {
        "status": "affected",
        "version": ">= 2.1.0, < 2.1.3"
      },
      {
        "status": "affected",
        "version": ">= 2.2.0, < 2.2.2"
      },
      {
        "status": "affected",
        "version": ">= 2.3.0, < 2.3.2"
      }
    ]
  }
]

4.4 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

LOW

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

5.6 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

12.8%