CVE-2023-29824

Dangling-pointer access via duplicate error-path decrement

Published Jul 6, 2023 · Updated Aug 2, 2024

A disputed use-after-free report in SciPy before 1.8.0 concerns Py_FindObjects and has no demonstrated security impact. On an allocation-error path in scipy/ndimage/src/nd_image.c, Py_FindObjects decrements the result list during cleanup and then decrements the same dangling pointer again when an exception is present. The report arose from static analysis without a proof of concept or observed error, and the upstream advisory was withdrawn after the report was found not to be a security issue.

CVSS severity9.8
Critical
EPSS probability1.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A disputed use-after-free report in SciPy before 1.8.0 concerns Py_FindObjects and has no demonstrated security impact. On an allocation-error path in scipy/ndimage/src/nd_image.c, Py_FindObjects decrements the result list during cleanup and then decrements the same dangling pointer again when an exception is present. The report arose from static analysis without a proof of concept or observed error, and the upstream advisory was withdrawn after the report was found not to be a security issue.

The record

CVE
CVE-2023-29824
Published
Jul 6, 2023
Updated
Aug 2, 2024
Vendor
SciPy
Product
SciPy
Classifications
CWE-416
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0 <1.8.0

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

SciPy · SciPyversion=0 <1.8.0

Published CVSS scores

6.7SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
4.8Amazon LinuxCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H
9.8National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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