CVE-2018-8897
- ULN >
- Oracle Linux CVE repository >
- CVE-2018-8897
CVE Details
| Release Date: | 2018-05-08 |
Description
A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS, as demonstrated by (for example) privilege escalation in Windows, macOS, some Xen configurations, or FreeBSD, or a Linux kernel crash. The MOV to SS and POP SS instructions inhibit interrupts (including NMIs), data breakpoints, and single step trap exceptions until the instruction boundary following the next instruction (SDM Vol. 3A; section 6.8.3). (The inhibited data breakpoints are those on memory accessed by the MOV to SS or POP to SS instruction itself.) Note that debug exceptions are not inhibited by the interrupt enable (EFLAGS.IF) system flag (SDM Vol. 3A; section 2.3). If the instruction following the MOV to SS or POP to SS instruction is an instruction like SYSCALL, SYSENTER, INT 3, etc. that transfers control to the operating system at CPL < 3, the debug exception is delivered after the transfer to CPL < 3 is complete. OS kernels may not expect this order of events and may therefore experience unexpected behavior when it occurs.
See more information about CVE-2018-8897 from MITRE CVE dictionary and NIST NVD
CVSS v3.0 metrics
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
| Base Score: | 7.8 | Base Metrics: | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Access Vector: | Local network | Attack Complexity: | Low |
| Privileges Required: | Low | User Interaction: | None |
| Scope: | Unchanged | Confidentiality Impact: | High |
| Integrity Impact: | High | Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 5 (kernel) | ELSA-2018-4219 | 2018-09-18 |
| Oracle Linux version 5 (kernel-uek) | ELSA-2018-4097 | 2018-05-08 |
| Oracle Linux version 5 (ocfs2-2.6.18-419.0.0.0.11.el5) | ELSA-2018-4219 | 2018-09-18 |
| Oracle Linux version 5 (oracleasm-2.6.18-419.0.0.0.11.el5) | ELSA-2018-4219 | 2018-09-18 |
| Oracle Linux version 6 (dtrace-modules-3.8.13-118.20.7.el6uek) | ELSA-2018-4098 | 2018-05-08 |
| Oracle Linux version 6 (kernel) | ELSA-2018-1319 | 2018-05-08 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2018-4096 | 2018-05-08 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2018-4097 | 2018-05-08 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2018-4098 | 2018-05-08 |
| Oracle Linux version 7 (dtrace-modules-3.8.13-118.20.7.el7uek) | ELSA-2018-4098 | 2018-05-08 |
| Oracle Linux version 7 (kernel) | ELSA-2018-1318 | 2018-05-09 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2018-4096 | 2018-05-08 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2018-4098 | 2018-05-08 |
| Oracle VM version 3.2 (xen) | OVMSA-2018-0272 | 2018-11-13 |
| Oracle VM version 3.3 (kernel-uek) | OVMSA-2018-0041 | 2018-05-09 |
| Oracle VM version 3.3 (xen) | OVMSA-2018-0271 | 2018-11-13 |
| Oracle VM version 3.4 (kernel-uek) | OVMSA-2018-0040 | 2018-05-08 |
| Oracle VM version 3.4 (xen) | OVMSA-2018-0221 | 2018-05-22 |
This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team
