CVE-2015-3291: arch/x86/entry/entry_64.S in the Linux kernel before 4.1.6 on the x86_64 platform does not properly determi...

Security readout for executives and security teams

CVE-2015-3291 is a Linux x86_64 kernel flaw that can let a local user crash or disrupt a system. It is not described as remotely exploitable, and the supplied sources do not show active exploitation. The main business risk is service interruption on older, unpatched Linux hosts. Exposure is most likely on x86_64 Linux systems running kernels older than 4.1.6 or vendor kernels that did not backport the fix. Systems allowing untrusted local users or workloads have higher practical risk. The provided affected-product metadata is incomplete. Treat this as a patch-management issue for legacy Linux systems. It is not presented as internet-exploitable, but a local denial-of-service flaw can still matter on shared infrastructure and production hosts with untrusted access. Mitigation focus: Update affected Linux kernels using vendor-supported security packages.; Confirm the running kernel includes the upstream 4.1.6 fix or vendor backport.; Prioritize shared, multi-user, and externally managed Linux hosts..

Prepared

Jun 13, 2026, 22:03 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.