udlfb framebuffer

About this tag
The udlfb framebuffer tag covers discussions about the Linux kernel's udlfb framebuffer driver, particularly a security vulnerability tracked as CVE-2026-31605. This flaw involves a divide-by-zero error in the driver when processing user-controlled display timing values, potentially causing a denial of service (DoS) crash. The vulnerability affects modern systems using this old graphics path, and both the NVD and Microsoft's Security Update Guide have published details for organizations monitoring Linux exposure. Topics include kernel security, patch management, and the risks of arithmetic validation mistakes in legacy drivers.

  1. CVE-2026-31605 udlfb Kernel Divide-by-Zero: Patch to Prevent Linux DoS Crashes

    CVE-2026-31605 is not the sort of vulnerability that generates splashy exploit headlines, but it is exactly the kind of kernel flaw that keeps platform security teams busy: a small arithmetic validation mistake in an old graphics path that can still crash modern systems under the right...
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    • divide by zero linux kernel security stable patching udlfb framebuffer
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    • Forum: Security Alerts