National Vulnerability Database

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    Vulnerabilities Detail

CVE-2018-15572 Detail

Current Description

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.

Source:  MITRE
Description Last Modified:  08/19/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N (V3 legend)
Impact Score: 4.0
Exploitability Score: 2.0

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 2.1 LOW
Vector: (AV:L/AC:L/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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
https://lists.debian.org/debian-lts-announce/2018/10/msg00003.html Mailing List Third Party Advisory
https://usn.ubuntu.com/3775-1/ Third Party Advisory
https://usn.ubuntu.com/3775-2/ Third Party Advisory
https://usn.ubuntu.com/3776-1/ Third Party Advisory
https://usn.ubuntu.com/3776-2/ Third Party Advisory
https://usn.ubuntu.com/3777-1/ Third Party Advisory
https://usn.ubuntu.com/3777-2/ Third Party Advisory
https://usn.ubuntu.com/3777-3/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4308 Third Party Advisory

Technical Details

Vulnerability Type (View All)

Change History

4 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-15572
NVD Published Date:
08/19/2018
NVD Last Modified:
10/31/2018