CVE-2026-58813 · Infrastructure
NO FIX YET
An incorrect bounds check in the mmap code of mman.c lets a size value get truncated, which causes out-of-bounds reads and writes. A local attacker with System-level execution privileges can use this to escalate privileges.
first public Nov 10, 2026 · 1 source
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Who cares local-privilege, mman
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No fix yet, per the sources.
In mmap of mman.c, there is a possible way to trigger an out of bounds read and write via mapping size truncation due to an incorrect bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
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