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CVE-2021-31829

CVSS v3.1 5.5 (Medium)
55% Progress
CVSS v2.0 2.1 (Low)
21% Progress
EPSS 0.05 % (17th)
0.05% Progress
Affected Products 3
Advisories 19
Info CVSS EPSS Affected Configurations References Security Advisories Packages & Software OVAL Tools, Exploits & PoC Graph Web & Social Timeline

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.

Weaknesses
CWE-863
Incorrect Authorization
CVE Status
PUBLISHED
CNA
MITRE
Published Date
2021-05-06 16:15:07
(3 years ago)
Updated Date
2023-11-07 03:35:01
(10 months ago)

Affected Products

Debian

Fedoraproject

Linux

Configuration #1

    CPE23 From Up To
  Linux Kernel 5.12.1 and prior versions cpe:2.3:o:linux:linux_kernel <= 5.12.1

Configuration #2

    CPE23 From Up To
  Fedoraproject Fedora 32 cpe:2.3:o:fedoraproject:fedora:32
  Fedoraproject Fedora 33 cpe:2.3:o:fedoraproject:fedora:33
  Fedoraproject Fedora 34 cpe:2.3:o:fedoraproject:fedora:34

Configuration #3

    CPE23 From Up To
  Debian Linux 9.0 cpe:2.3:o:debian:debian_linux:9.0