CVE-2021-3543
Summary
| CVE | CVE-2021-3543 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-06-01 14:15:00 UTC |
| Updated | 2023-11-07 03:38:00 UTC |
| Description | A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system. |
Risk And Classification
Problem Types: CWE-476 | CWE-416
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Fedoraproject | Fedora | 34 | All | All | All |
| Application | Nitro Enclaves Project | Nitro Enclaves | All | All | All | All |
| Operating System | Redhat | Enterprise Linux | 8.0 | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| [PATCH v1 0/1] Nitro Enclaves kernel driver issue fix - Andra Paraschiv | MISC | lore.kernel.org | |
| [PATCH v1 1/1] nitro_enclaves: Fix stale file descriptors on failed usercopy - Andra Paraschiv | MISC | lore.kernel.org | |
| 1953022 – (CVE-2021-3543) CVE-2021-3543 kernel: nitro_enclaves stale file descriptors on failed usercopy | MISC | bugzilla.redhat.com | |
| [PATCH v1 1/1] nitro_enclaves: Fix stale file descriptors on failed usercopy - Andra Paraschiv | lore.kernel.org | ||
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Legacy QID Mappings
- 159239 Oracle Enterprise Linux Security Update for kernel (ELSA-2021-2168)
- 179556 Debian Security Update for linux (CVE-2021-3543)
- 198416 Ubuntu Security Notification for Linux kernel vulnerabilities (USN-4997-1)
- 198419 Ubuntu Security Notification for Linux kernel (OEM) vulnerabilities (USN-5001-1)
- 198426 Ubuntu Security Notification for Linux kernel (KVM) vulnerabilities (USN-4997-2)
- 239379 Red Hat Update for kernel (RHSA-2021:2168)
- 239454 Red Hat Update for kernel-rt (RHSA-2021:2169)
- 353158 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.10-2022-002
- 940125 AlmaLinux Security Update for kernel (ALSA-2021:2168)
- 960066 Rocky Linux Security Update for kernel (RLSA-2021:2168)