CVE-2022-49700

CVSS 3.1 Score 7.8 of 10 (high)

Details

Published Feb 26, 2025
Updated: Feb 27, 2025
CWE ID 416

Summary

CVE-2022-49700 is a Linux kernel vulnerability affecting slab memory management. The issue lies in the mm/slub subsystem, where two places in __slab_alloc() fail to update the TID (Thread Information Data) upon slab deactivation. Consequently, if multiple processes race to perform freeing and allocating operations on the same CPU and kmem_cache, objects can get lost, or even worse, be freed onto the wrong slab's freelist, resulting in incorrect inuse counters and potential use-after-free scenarios.

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