CVE-2021-4090
Summary
| CVE | CVE-2021-4090 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2022-02-18 18:15:00 UTC |
| Updated | 2023-11-07 03:40:00 UTC |
| Description | An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat. |
Risk And Classification
Problem Types: CWE-787
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Linux | Linux Kernel | All | All | All | All |
| Operating System | Linux | Linux Kernel | 5.16 | - | All | All |
| Operating System | Linux | Linux Kernel | 5.16 | rc1 | All | All |
| Hardware | Netapp | Baseboard Management Controller H300e | - | All | All | All |
| Operating System | Netapp | Baseboard Management Controller H300e Firmware | - | All | All | All |
| Hardware | Netapp | Baseboard Management Controller H300s | - | All | All | All |
| Operating System | Netapp | Baseboard Management Controller H300s Firmware | - | All | All | All |
| Hardware | Netapp | Baseboard Management Controller H410c | - | All | All | All |
| Operating System | Netapp | Baseboard Management Controller H410c Firmware | - | All | All | All |
| Hardware | Netapp | Baseboard Management Controller H410s | - | All | All | All |
| Operating System | Netapp | Baseboard Management Controller H410s Firmware | - | All | All | All |
| Hardware | Netapp | Baseboard Management Controller H500e | - | All | All | All |
| Operating System | Netapp | Baseboard Management Controller H500e Firmware | - | All | All | All |
| Hardware | Netapp | Baseboard Management Controller H500s | - | All | All | All |
| Operating System | Netapp | Baseboard Management Controller H500s Firmware | - | All | All | All |
| Hardware | Netapp | Baseboard Management Controller H700e | - | All | All | All |
| Operating System | Netapp | Baseboard Management Controller H700e Firmware | - | All | All | All |
| Hardware | Netapp | Baseboard Management Controller H700s | - | All | All | All |
| Operating System | Netapp | Baseboard Management Controller H700s Firmware | - | All | All | All |
| Hardware | Netapp | H300e | - | All | All | All |
| Operating System | Netapp | H300e Firmware | - | All | All | All |
| Hardware | Netapp | H300s | - | All | All | All |
| Operating System | Netapp | H300s Firmware | - | All | All | All |
| Hardware | Netapp | H410c | - | All | All | All |
| Operating System | Netapp | H410c Firmware | - | All | All | All |
| Hardware | Netapp | H410s | - | All | All | All |
| Operating System | Netapp | H410s Firmware | - | All | All | All |
| Hardware | Netapp | H500e | - | All | All | All |
| Operating System | Netapp | H500e Firmware | - | All | All | All |
| Hardware | Netapp | H500s | - | All | All | All |
| Operating System | Netapp | H500s Firmware | - | All | All | All |
| Hardware | Netapp | H700e | - | All | All | All |
| Operating System | Netapp | H700e Firmware | - | All | All | All |
| Hardware | Netapp | H700s | - | All | All | All |
| Operating System | Netapp | H700s Firmware | - | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| [PATCH v1] NFSD: Fix exposure in nfsd4_decode_bitmap() - Chuck Lever | lore.kernel.org | ||
| CVE-2021-4090 Linux Kernel Vulnerability in NetApp Products | NetApp Product Security | CONFIRM | security.netapp.com | |
| [PATCH v1] NFSD: Fix exposure in nfsd4_decode_bitmap() - Chuck Lever | MISC | lore.kernel.org | |
| 2025101 – (CVE-2021-4090) CVE-2021-4090 kernel: Overflow of bmval[bmlen-1] in nfsd4_decode_bitmap function | MISC | bugzilla.redhat.com | |
| 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
- 182160 Debian Security Update for linux (CVE-2021-4090)
- 198624 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5217-1)
- 198653 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5265-1)
- 198728 Ubuntu Security Notification for Linux kernel (Intel IOTG) Vulnerabilities (USN-5362-1)
- 900694 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8678)
- 901154 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8654-1)
- 906175 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8678-1)
- 906459 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (8654-2)