Bug 2443826 (CVE-2026-3441)

Summary: CVE-2026-3441 binutils: GNU Binutils: Information disclosure via specially crafted XCOFF object file
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: crizzo, gtanzill, jbuscemi, jmitchel, kshier, pbohmill, teagle
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in GNU Binutils. This heap-based buffer overflow vulnerability, specifically an out-of-bounds read in the bfd linker, allows an attacker to gain access to sensitive information. By convincing a user to process a specially crafted XCOFF object file, an attacker can trigger this flaw, potentially leading to information disclosure or an application level denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2443830, 2443831, 2443832, 2443835, 2443836, 2443837, 2443833, 2443834    
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Description OSIDB Bzimport 2026-03-02 14:08:14 UTC 
Summary: A heap-based buffer overflow (Out-of-Bounds Read) was found in GNU Binutils (bfd linker). The vulnerability occurs in bfd/xcofflink.c in the xcoff_link_add_symbols function. It is caused by an improper check of the x_scnlen value, leading to an out-of-bounds access on the csects array.
Requirements to exploit: An attacker needs to trick a user into running the ld linker against a specially crafted malicious XCOFF object file.