Bug 2516613 (CVE-2026-72270)

Summary: CVE-2026-72270 kernel: fbdev: s3fb: fix potential memory leak in s3_pci_probe()
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: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's s3fb driver, which handles S3 graphics cards. This vulnerability involves a memory leak within the `s3_pci_probe()` function. When certain error conditions occur, memory allocated for display mode lists is not properly freed. This oversight could allow an attacker to gradually consume system memory, potentially leading to a denial of service (DoS) by making the system unstable or unresponsive.
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Description OSIDB Bzimport 2026-08-15 06:21:55 UTC 
In the Linux kernel, the following vulnerability has been resolved:

fbdev: s3fb: fix potential memory leak in s3_pci_probe()

In s3_pci_probe(), the memory allocated for modelist using
fb_videomode_to_modelist() is not freed in subsequent error paths.
Fix that by calling fb_destroy_modelist()
Comment 1 Keith Grant 2026-08-18 18:22:11 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081556-CVE-2026-72270-bdbd@gregkh/T