CVE-2026-71968: Optee Unvalidated Ta Concurrent Flag
TA flags are validated using a bitmask without explicitly checking and rejecting TA_FLAG_CONCURRENT. In user Trusted Applications, allowing TA_FLAG_CONCURRENT permits concurrent execution without required kernel locks, which can cause use-after-free and secure kernel memory corruption.
Cgreprules fetch cve-2026-71968-optee-unvalidated-ta-concurrent-flag --engine opengrepDescription
TA flags are validated using a bitmask without explicitly checking and rejecting TA_FLAG_CONCURRENT. In user Trusted Applications, allowing TA_FLAG_CONCURRENT permits concurrent execution without required kernel locks, which can cause use-after-free and secure kernel memory corruption.
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