CVE-2018-15572

Severity

21%

Complexity

39%

Confidentiality

48%

The spectre_v2_select_mitigation function in arch/x86/kernel/cpu/bugs.c in the Linux kernel before 4.18.1 does not always fill RSB upon a context switch, which makes it easier for attackers to conduct userspace-userspace spectreRSB attacks.

The spectre_v2_select_mitigation function in arch/x86/kernel/cpu/bugs.c in the Linux kernel before 4.18.1 does not always fill RSB upon a context switch, which makes it easier for attackers to conduct userspace-userspace spectreRSB attacks.

CVSS 3.0 Base Score 6.5. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N).

CVSS 2.0 Base Score 2.1. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N).

Overview

Type

Linux

First reported 6 years ago

2018-08-20 02:29:00

Last updated 5 years ago

2019-10-03 00:03:00

Affected Software

Debian Linux 8.0 (Jessie)

8.0

Debian Linux 9.0

9.0

Canonical Ubuntu Linux 12.04 ESM (Extended Security Maintenance)

12.04

Canonical Ubuntu Linux 14.04 LTS (Long-Term Support)

14.04

Canonical Ubuntu Linux 16.04 LTS (Long-Term Support)

16.04

Canonical Ubuntu Linux 18.04 LTS Edition

18.04

Linux Kernel

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fdf82a7856b32d905c39afc85e34364491e46346

Mitigation, Patch, Vendor Advisory

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.1

Mitigation, Patch, Vendor Advisory

https://github.com/torvalds/linux/commit/fdf82a7856b32d905c39afc85e34364491e46346

Mitigation, Patch, Third Party Advisory

[debian-lts-announce] 20181003 [SECURITY] [DLA 1531-1] linux-4.9 security update

Mailing List, Third Party Advisory

USN-3775-1

Third Party Advisory

USN-3775-2

Third Party Advisory

USN-3776-1

Third Party Advisory

USN-3776-2

Third Party Advisory

USN-3777-1

Third Party Advisory

USN-3777-2

Third Party Advisory

USN-3777-3

Third Party Advisory

DSA-4308

Third Party Advisory

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