Bug 2460016 (CVE-2026-6844)

Summary:	CVE-2026-6844 binutils: Binutils: Denial of Service vulnerabilities in readelf via crafted ELF files
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	crizzo, gtanzill, jbuscemi, jmitchel, kshier, maojian16, pbohmill, teagle
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
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Doc Text:	A flaw was found in the `readelf` utility of the binutils package. A local attacker could exploit two Denial of Service (DoS) vulnerabilities by providing a specially crafted Executable and Linkable Format (ELF) file. One vulnerability, a resource exhaustion (CWE-400), can lead to an out-of-memory condition. The other, a null pointer dereference (CWE-476), can cause a segmentation fault. Both issues can result in the `readelf` utility becoming unresponsive or crashing, leading to a denial of service.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2460505, 2460506, 2460507
Bug Blocks:

Description OSIDB Bzimport 2026-04-21 08:38:43 UTC

Two DoS vulnerabilities in readelf 2.46:
1. Resource exhaustion (CWE-400): crafted ELF triggers 6.3TB allocation, OOM kill
2. Null pointer deref (CWE-476): malformed sh_entsize/shoff causes SIGSEGV

Discovered via AFL++ fuzzing. PoC files attached to JSM ticket. Not publicly disclosed.

Comment 4 maojian 2026-05-06 02:26:07 UTC

Does this issue affect versions between 2.34 and 2.44? Also, is there an estimated timeline for an upstream fix or patch release?