PT-2019-2536 · Linux+3 · Linux Kernel+3

Jann Horn · Published 2019-01-02 · Updated 2019-09-24 · CVE-2019-7308

Positive Technologies (AI Summary)

CVSS v3.1

5.6

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.20.6

Description The issue is related to undesirable out-of-bounds speculation on pointer arithmetic in the Linux kernel, specifically in kernel/bpf/verifier.c. This can lead to side-channel attacks. The vulnerability is associated with pointer offset beyond permissible values, which can be exploited to implement side-channel attacks.

Recommendations For Linux kernel versions prior to 4.20.6, update to version 4.20.6 or later to resolve the issue.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

CWE-189

Related Identifiers

ALT-PU-2019-1162

ALT-PU-2019-1231

ALT-PU-2019-1433

BDU:2019-02381

CVE-2019-7308

MGASA-2019-0170

MGASA-2019-0171

MGASA-2019-0172

OPENSUSE-SU-2019:1193-1

OPENSUSE-SU-2019_1193-1

SUSE-SU-2019:0765-1

SUSE-SU-2019:0767-1

SUSE-SU-2019:0784-1

SUSE-SU-2019:0785-1

USN-3930-1

USN-3930-2

USN-3931-1

USN-3931-2

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 386

• https://github.com/torvalds/linux/commit/979d63d50c0c0f7bc537bf821e056cc9fe5abd38 · Patch
• https://github.com/torvalds/linux/commit/d3bd7413e0ca40b60cf60d4003246d067cafdeda · Patch
• https://bugs.chromium.org/p/project-zero/issues/detail?id=1711 · Patch
• https://osv.dev/vulnerability/MGASA-2019-0172 · Vendor Advisory
• https://usn.ubuntu.com/3930-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-9162 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00052.html · Vendor Advisory
• https://osv.dev/vulnerability/USN-3930-2 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-9213 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-19824 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3931-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2019:0765-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0171 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3931-2 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3931-1 · Vendor Advisory