Bug 2479770 (CVE-2026-3593) - CVE-2026-3593 bind: Heap use-after-free vulnerability in BIND 9 DNS-over-HTTPS implementation
Summary: CVE-2026-3593 bind: Heap use-after-free vulnerability in BIND 9 DNS-over-HTTP...
Keywords:
Status: NEW
Alias: CVE-2026-3593
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2480121 2481341 2481343
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-19 09:58 UTC by OSIDB Bzimport
Modified: 2026-06-03 15:50 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-05-19 09:58:00 UTC 
Description:

A use-after-free vulnerability exists within the DNS-over-HTTPS implementation.

Impact:

Crafted HTTP/2 traffic sent to a DNS-over-HTTPS endpoint can be used to trigger memory corruption.

-   Authoritative servers are affected by this vulnerability.

-   Resolvers are affected by this vulnerability.
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