Bug 2545899 (CVE-2023-26242)

Summary: CVE-2023-26242 kernel: kernel: fpga: dfl-afu: integer overflow in afu_mmio_region_get_by_offset()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
afu_mmio_region_get_by_offset in drivers/fpga/dfl-afu-region.c in the Linux kernel through 6.1.12 has an integer overflow.
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-10-05 12:40:08 UTC 
An integer overflow vulnerability was found in the afu_mmio_region_get_by_offset() function in drivers/fpga/dfl-afu-region.c in the Linux kernel. The function does not properly validate region size and offset values, which can lead to an integer wraparound. This could allow a local attacker to potentially escalate privileges or cause a denial of service.