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Change History

In the Linux kernel, the following vulnerability has been resolved:

sched/eevdf: Prevent vlag from going out of bounds in reweight_eevdf()

It was possible to have pick_eevdf() return NULL, which then causes a
NULL-deref. This turned out to be due to entity_eligible() returning
falsely negative because of a s64 multiplcation overflow.

Specifically, reweight_eevdf() computes the vlag without considering
the limit placed upon vlag as update_entity_lag() does, and then the
scaling multiplication 

kernel.org https://git.kernel.org/stable/c/06f27e6d7bf0abf54488259ef36bbf0e1fccb35c [No types assigned]

kernel.org https://git.kernel.org/stable/c/1560d1f6eb6b398bddd80c16676776c0325fe5fe [No types assigned]

kernel.org https://git.kernel.org/stable/c/470d347b14b0ecffa9b39cf8f644fa2351db3efb [No types assigned]