VDB
DEBIAN-CVE-2021-34556
DEBIAN-CVE-2021-34556
PUBLISHED
CVSS 5.5 MEDIUM
In the Linux kernel through 5.13.7, an unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack.
Risk Scores
CVSS 3.1
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | linux | 0 |
| Debian:13 | linux | 0 |
| Debian:14 | linux | 0 |
Timeline
- Aug 2, 2021 CVE Published
- Oct 9, 2026 CVE Updated