Disclosure summary
A memory leak vulnerability was found in the Linux kernel's eBPF for the Simulated networking device driver in the way user uses BPF for the device such that function nsim_map_alloc_elem being called. A local user could use this flaw to get unauthorized access to some data.
Source-reported weakness categories
CWE-200, CWE-401
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2021-4135
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| linux | linux_kernel | * {"versionEndExcluding":"5.16"} |
| linux | linux_kernel | 5.16 |
| linux | linux_kernel | 5.16 |
| linux | linux_kernel | 5.16 |
| linux | linux_kernel | 5.16 |
| linux | linux_kernel | 5.16 |
| linux | linux_kernel | 5.16 |
Original records & references
- NIST NVD record
- CVE Program record
- git.kernel.org — Mailing List, Patch, Vendor Advisory
- git.kernel.org — Mailing List, Patch, Vendor Advisory
PUBLISHED 2022-07-14T16:15:08-04:00
MODIFIED 2026-10-08T17:17:42-04:00
INGESTED 2026-10-10T20:50:21-04:00