Bug 2529094 (CVE-2026-6244)

Summary: CVE-2026-6244 libpcap: libpcap: Denial of Service via crafted BPF filter program
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: akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, kshier, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, stcannon, suppawar, teagle, vlaad, watson-tool-maintainers, yguenane
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in libpcap. The Berkeley Packet Filter (BPF) interpreter's 'div #k' and 'mod #k' instructions do not validate if the immediate value 'k' is zero. A local attacker with low privileges could exploit this by providing a specially crafted filter program, leading to a division-by-zero error. This could result in a denial of service (DoS) for the affected system.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2530708    
Bug Blocks:    

Description OSIDB Bzimport 2026-09-05 19:01:37 UTC
libpcap BPF interpreter for the 'div #k' and 'mod #k' ALU instructions does not check whether the immediate value is zero.  In particular uncommon use cases a crafted filter program can cause a division by zero.