Threats Tagged 'cve-2026-79979'
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Threats Tagged 'cve-2026-79979'
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0 CVE-2026-79979 is a use-after-free vulnerability in the Zephyr project affecting arm64 builds with CONFIG_USERSPACE and CONFIG_DEMAND_PAGING enabled. The issue arises from improper TLB invalidation that only targets ASID 0, allowing stale translations for other ASIDs to persist. This flaw enables unprivileged user threads to access and modify kernel or other domain memory, breaking memory isolation and potentially leading to full system compromise. The vulnerability affects Zephyr versions from 4.3.0 up to but not including 4.5.0. A fix has been implemented to correct the TLB invalidation to cover all ASIDs and preserve proper memory domain permissions. Join the discussion | CVE Database V5 | 10/23/2026, 19:56:16 UTC Added: 10/23/2026, 20:05:59 UTC |
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