Bug 2535468 (CVE-2026-75029) - CVE-2026-75029 bind: BIND 9: Denial of Service via crafted query responses
Summary: CVE-2026-75029 bind: BIND 9: Denial of Service via crafted query responses
Keywords:
Status: NEW
Alias: CVE-2026-75029
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2535870
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-16 14:33 UTC by OSIDB Bzimport
Modified: 2026-09-17 08:50 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)

Description OSIDB Bzimport 2026-09-16 14:33:21 UTC 
In a query response, an attacker may send `named` multiple copies of a record that should only exist once (such as an SOA record). If the RDATA is the same on all the copies, the record is appended to the in-memory RDATA set, which can cause increased memory usage of the negative cache and possibly lead to other memory attack vectors.
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.
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