---
id: CVE-2024-52296
aliases:
  - GHSA-7945-5mcv-f2pp
  - PYSEC-2026-1534
title: LibOSDP vulnerable to a null pointer deref in osdp_reply_name
summary: LibOSDP vulnerable to a null pointer deref in osdp_reply_name
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: libosdp
product: libosdp
ecosystem: pip
affected:
  - libosdp < 2.4.0
patched:
  - libosdp 2.4.0
published: '2024-03-08'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-7945-5mcv-f2pp'
references:
  - url: >-
      https://github.com/goToMain/libosdp/security/advisories/GHSA-7945-5mcv-f2pp
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-52296'
  - url: >-
      https://github.com/goToMain/libosdp/commit/24409e98a260176765956ec766a04cb35984fab1
  - url: 'https://github.com/goToMain/libosdp'
tags:
  - osv
  - pip
epss: 0.00347
epssPercentile: 0.28432
ingestedAt: '2026-07-08T18:25:46.817Z'
---

## Overview

### Issue:
At ospd_common.c, on the osdp_reply_name function, any reply id between REPLY_ACK and REPLY_XRD is valid, but names array do not declare all of the range. On a case of an undefined reply id within the range, name will be null (`name = names[reply_id - REPLY_ACK];`). Null name will casue a crash on next line: `if (name[0] == '\0')` as null[0] is invalid.

### Attack:
As this logic is not limited to a secure connection, attacker may trigger this vulnerability without any prior knowledge.

### Impact
Denial of Service

### Patch
The issue has been patched in 24409e98a260176765956ec766a04cb35984fab1


## Affected packages

- `libosdp < 2.4.0`

## Remediation

Upgrade to a patched release:

- `libosdp 2.4.0`