Disclosure summary
The check_alu_op() function in kernel/bpf/verifier.c in the Linux kernel through v5.16-rc5 did not properly update bounds while handling the mov32 instruction, which allows local users to obtain potentially sensitive address information, aka a "pointer leak."
Source-reported weakness categories
CWE-668
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-2021-45402
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 |
Original records & references
- NIST NVD record
- CVE Program record
- git.kernel.org — Exploit, Patch, Vendor Advisory
- git.kernel.org — Exploit, Patch, Vendor Advisory
- git.kernel.org — Patch, Vendor Advisory
- git.kernel.org — Exploit, Patch, Vendor Advisory
- git.kernel.org — Exploit, Patch, Vendor Advisory
- git.kernel.org — Patch, Vendor Advisory
PUBLISHED 2022-02-11T10:15:07-05:00
MODIFIED 2026-10-08T17:17:42-04:00
INGESTED 2026-10-10T20:50:21-04:00