CVE-2021-31829

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 06-05-2021 06:15

Last modified: - 26-10-2022 01:44

Total changes: - 6

Description

kernel/bpf/verifier.c in the Linux kernel through 5.12.1 performs undesirable speculative loads, leading to disclosure of stack content via side-channel attacks, aka CID-801c6058d14a. The specific concern is not protecting the BPF stack area against speculative loads. Also, the BPF stack can contain uninitialized data that might represent sensitive information previously operated on by the kernel.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Low

Attack complexity

Local

Attack vector

None

Availability

High

Confidentiality

None

Integrity

Low

Privileges required

Unchanged

Scope

None

User interaction

5.5

Base score

1.8

3.6

Exploitability score

Impact score

Verification logic

Reference

http://www.openwall.com/lists/oss-security/2021/05/04/4
https://github.com/torvalds/linux/commit/801c6058d14a82179a7ee17a4b532cac6fad067f
FEDORA-2021-7c085ca697-Mailing List, Third Party Advisory
FEDORA-2021-5ad5249c43-Mailing List, Third Party Advisory
FEDORA-2021-9c0276e935-Mailing List, Third Party Advisory
[debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update-Mailing List, Third Party Advisory

Keywords

CVE-2021-31829

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2021-31829

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures