---
schema_version: '1.0'
id: security-20260705-4d7684
url: https://osv.dev/vulnerability/DEBIAN-CVE-2026-28387
url_hash: 4d76841137bd023c6ae38c80e4a2440aa6de5b39f2649d80015ca97b39a2a137
canonical_url: https://osv.dev/vulnerability/DEBIAN-CVE-2026-28387
source: osv:debian
category: security/os
category_raw: cve/os
region: null
tags:
- cve
- DEBIAN-CVE-2026-28387
- severity:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- openssl
- Debian
lang: en
published_at: '2026-04-07T22:16:20Z'
fetched_at: '2026-07-05T15:34:34Z'
updated_at: '2026-07-05T15:36:29Z'
status: published
content_hash: 81a86af5944d830741b8929819c027b8b36c1f6a5b2182af7c48b72108f35d28
license_note: full
summary: 'Issue summary: An uncommon configuration of clients performing DANE TLSA-based
  server authentication, when paired with uncommon server DANE TLSA records, may result
  in a use-after-free and/or double-free on the client side.  Impact summary: A use
  after free can have a range of po'
summary_source: rss
summary_en: 'Issue summary: An uncommon configuration of clients performing DANE TLSA-based
  server authentication, when paired with uncommon server DANE TLSA records, may result
  in a use-after-free and/or double-free on the client side.  Impact summary: A use
  after free can have a range of po'
entities: []
key_facts: []
related: []
related_auto: []
title: DEBIAN-CVE-2026-28387 — openssl
---

# DEBIAN-CVE-2026-28387 — openssl

## TL;DR
Issue summary: An uncommon configuration of clients performing DANE TLSA-based server authentication, when paired with uncommon server DANE TLSA records, may result in a use-after-free and/or double-free on the client side.  Impact summary: A use after free can have a range of po

## Key Points
- cve / DEBIAN-CVE-2026-28387 / severity:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H / openssl / Debian

## Details
**Severity:** CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
**Advisory:** DEBIAN-CVE-2026-28387

**Affected (your watchlist):**
- `Debian:openssl` 3.0.11-1~deb12u2 → no fixed version listed [rpi]

**Details:**
Issue summary: An uncommon configuration of clients performing DANE TLSA-based server authentication, when paired with uncommon server DANE TLSA records, may result in a use-after-free and/or double-free on the client side.  Impact summary: A use after free can have a range of potential consequences such as the corruption of valid data, crashes or execution of arbitrary code.  However, the issue only affects clients that make use of TLSA records with both the PKIX-TA(0/PKIX-EE(1) certificate usages and the DANE-TA(2) certificate usage.  By far the most common deployment of DANE is in SMTP MTAs for which RFC7672 recommends that clients treat as 'unusable' any TLSA records that have the PKIX certificate usages.  These SMTP (or other similar) clients are not vulnerable to this issue.  Conversely, any clients that support only the PKIX usages, and ignore the DANE-TA(2) usage are also not vulnerable.  The client would also need to be communicating with a server that publishes a TLSA RRset with both types of TLSA records.  No FIPS modules are affected by this issue, the problem code is outside the FIPS module boundary.

**References:**
- https://security-tracker.debian.org/tracker/CVE-2026-28387

_Data: OSV.dev (upstream: debian) — https://osv.dev/vulnerability/DEBIAN-CVE-2026-28387_

## Source
元記事: [DEBIAN-CVE-2026-28387 — openssl](https://osv.dev/vulnerability/DEBIAN-CVE-2026-28387) — published 2026-04-07T22:16:20Z