Use After Free Affecting op-tee/optee_os package, versions [3.16.0-rc1,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-OPTEEOPTEEOS-17308779
- published11 Jun 2026
- disclosed3 Jun 2026
- creditUnknown
Introduced: 3 Jun 2026
CVE-2026-40290 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Use After Free in the sp_mem_remove() function due to failure to acquire the global sp_mem_lock before freeing entries in smem->receivers and smem->regions. An attacker can cause memory corruption or execute arbitrary code by triggering concurrent access to these lists, leading to dereferencing of freed pointers. This is only exploitable if the system is configured as an SPMC for S-EL0 SPs with CFG_SECURE_PARTITION=y.