Medium severity5.5NVD Advisory· Published Mar 10, 2022· Updated Jun 17, 2026
CVE-2021-44421
CVE-2021-44421
Description
The pointer-validation logic in util/mem_util.rs in Occlum before 0.26.0 for Intel SGX acts as a confused deputy that allows a local attacker to access unauthorized information via side-channel analysis.
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Affected products
3- Occlum/Occlumdescription
- cpe:2.3:a:occlum_project:occlum:*:*:*:*:*:software_guard_extensions:*:*Range: <0.26.0
Patches
Vulnerability mechanics
References
4- github.com/occlum/occlum/commit/36918e42bf6732c4d3996bc99eb013eb6b90b249nvdPatchThird Party Advisory
- github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rsnvdExploitThird Party Advisory
- github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rsnvdExploitThird Party Advisory
- github.com/occlum/occlum/compare/0.25.0...v0.26.0nvdThird Party Advisory
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