CVE-2019-7308

Public on 2019-05-02
Modified on 2021-07-15
Description
A bypass was found for the Spectre v1 hardening in the eBPF engine of the Linux kernel. The code in the kernel/bpf/verifier.c performs undesirable out-of-bounds speculation on pointer arithmetic in various cases, including cases of different branches with different state or limits to sanitize, leading to side-channel attacks.
Severity
Important
CVSS v3 Base Score
5.6
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 kernel 2021-04-20 17:55 ALAS2-2021-1627
Amazon Linux 2 kernel 2019-05-02 18:45 ALAS2-2019-1201
Amazon Linux 2 kernel 2021-04-20 17:55 ALAS2-2021-1627
Amazon Linux 2 kernel 2019-05-02 18:45 ALAS2-2019-1201
Amazon Linux 1 kernel 2019-05-02 17:22 ALAS-2019-1201

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD CVSSv2 4.7 AV:L/AC:M/Au:N/C:C/I:N/A:N
NVD CVSSv3 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N