CVE-2018-8897: A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the…
Noroxi assessment
Priority: Plan (action score 40/100)
- A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
- Because a ready-made attack tool exists, priority is at least “Plan”.
- Probability of exploitation in the next 30 days: 18.4% (FIRST EPSS); higher than 97.2% of all records.
- Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: xen (Alpine:v3.10) 4.10.1-r1; xen (Alpine:v3.4) 4.6.6-r5; xen (Alpine:v3.5) 4.7.3-r9.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Add it to your regular patch cycle. Upgrade to xen (Alpine:v3.10) 4.10.1-r1; xen (Alpine:v3.4) 4.6.6-r5; xen (Alpine:v3.5) 4.7.3-r9 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
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.
- Published
- May 8, 2018
- Updated
- Jun 16, 2026
- EPSS
- 18.4% · 97th percentile
- CWE
- CWE-362
Report tools
Action score
40
Add it to your regular patch cycle.
- CVSS
- 31 / 40 · 7.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 6 / 30 · 18.4%
- Ready-made attack tool
- 3 / 40 · floor: at least 40
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Weaponized exploit exists
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
Is your version affected? Check itNoroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
| canonical | ubuntu linux | cpe:2.3:o:canonical:ubuntu_linux |
| redhat | enterprise linux server | cpe:2.3:o:redhat:enterprise_linux_server |
| redhat | enterprise linux workstation | cpe:2.3:o:redhat:enterprise_linux_workstation |
| redhat | enterprise virtualization manager | cpe:2.3:o:redhat:enterprise_virtualization_manager |
| citrix | xenserver | cpe:2.3:a:citrix:xenserver |
| synology | skynas | cpe:2.3:a:synology:skynas |
| synology | diskstation manager | cpe:2.3:o:synology:diskstation_manager |
| apple | mac os x | cpe:2.3:o:apple:mac_os_x |
| xen | xen | cpe:2.3:o:xen:xen |
| freebsd | freebsd | cpe:2.3:o:freebsd:freebsd |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- apple mac os xbefore 10.13.4
- canonical ubuntu linux14.04
- canonical ubuntu linux16.04
- canonical ubuntu linux17.10
- citrix xenserver6.0.2
- citrix xenserver6.2.0
- citrix xenserver6.5
- citrix xenserver7.0
+12 more rows
- citrix xenserver7.1
- citrix xenserver7.2
- citrix xenserver7.3
- citrix xenserver7.4
- debian debian linux7.0
- debian debian linux8.0
- debian debian linux9.0
- freebsd freebsd11.0 and later · before 11.1
- redhat enterprise linux server7.0
- redhat enterprise linux workstation7.0
- redhat enterprise virtualization manager3.0
- synology diskstation manager5.2
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Alpine:v3.10 | xen | before 4.10.1-r1 | 4.10.1-r1 |
| Alpine:v3.4 | xen | before 4.6.6-r5 | 4.6.6-r5 |
| Alpine:v3.5 | xen | before 4.7.3-r9 | 4.7.3-r9 |
| Alpine:v3.6 | xen | before 4.8.3-r1 | 4.8.3-r1 |
| Alpine:v3.7 | xen | before 4.9.2-r2 | 4.9.2-r2 |
| Debian:12 | linux | before 4.15.17-1 | 4.15.17-1 |
| Debian:12 | xen | before 4.8.3+xsa262+shim4.10.0+comet3-1+deb9u6 | 4.8.3+xsa262+shim4.10.0+comet3-1+deb9u6 |
| Debian:7 | linux | before 3.2.102-1 | 3.2.102-1 |
| Debian:7 | xen | before 4.1.6.lts1-14 | 4.1.6.lts1-14 |
| Debian:8 | linux | before 3.16.56-1+deb8u1 | 3.16.56-1+deb8u1 |
| Debian:8 | xen | before 4.4.4lts4-0+deb8u1 | 4.4.4lts4-0+deb8u1 |
| Debian:9 | linux | before 4.9.88-1+deb9u1 | 4.9.88-1+deb9u1 |
| Red Hat:enterprise_linux:6::client | kernel | before 0:2.6.32-696.28.1.el6 | 0:2.6.32-696.28.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-abi-whitelists | before 0:2.6.32-696.28.1.el6 | 0:2.6.32-696.28.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug | before 0:2.6.32-696.28.1.el6 | 0:2.6.32-696.28.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug-debuginfo | before 0:2.6.32-696.28.1.el6 | 0:2.6.32-696.28.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debug-devel | before 0:2.6.32-696.28.1.el6 | 0:2.6.32-696.28.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo | before 0:2.6.32-696.28.1.el6 | 0:2.6.32-696.28.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo-common-i686 | before 0:2.6.32-696.28.1.el6 | 0:2.6.32-696.28.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-debuginfo-common-x86_64 | before 0:2.6.32-696.28.1.el6 | 0:2.6.32-696.28.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-devel | before 0:2.6.32-696.28.1.el6 | 0:2.6.32-696.28.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-doc | before 0:2.6.32-696.28.1.el6 | 0:2.6.32-696.28.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-firmware | before 0:2.6.32-696.28.1.el6 | 0:2.6.32-696.28.1.el6 |
| Red Hat:enterprise_linux:6::client | kernel-headers | before 0:2.6.32-696.28.1.el6 | 0:2.6.32-696.28.1.el6 |
+96
Same product
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Published before and after this one in the same product
- ← EarlierCVE-2018-8048Mar 27, 2018 · In the Loofah gem through 2.2.0 for Ruby, non-whitelisted HTML attributes may occur in sanitized output by republishing a crafted HTML…25Monitor
- ← EarlierCVE-2018-1064Mar 28, 2018 · libvirt version before 4.2.0-rc1 is vulnerable to a resource exhaustion as a result of an incomplete fix for CVE-2018-5748 that affects…31Monitor
- Later →CVE-2018-1000301May 24, 2018 · curl version curl 7.20.0 to and including curl 7.59.0 contains a CWE-126: Buffer Over-read vulnerability in denial of service that can…38Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| alpine:xen | 4.10.1-r1 · Alpine:v3.10 | Package registry (OSV) |
| debian:linux | 4.15.17-1 · Debian:12 | Package registry (OSV) |
| debian:xen | 4.8.3+xsa262+shim4.10.0+comet3-1+deb9u6 · Debian:12 | Package registry (OSV) |
| red hat:kernel | 0:3.10.0-862.2.3.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-abi-whitelists | 0:3.10.0-862.2.3.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debug | 0:3.10.0-862.2.3.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debug-debuginfo | 0:3.10.0-862.2.3.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debug-devel | 0:3.10.0-862.2.3.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debuginfo | 0:3.10.0-862.2.3.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-debuginfo-common-x86_64 | 0:3.10.0-862.2.3.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-devel | 0:3.10.0-862.2.3.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-doc | 0:3.10.0-862.2.3.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-headers | 0:3.10.0-862.2.3.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-tools | 0:3.10.0-862.2.3.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| red hat:kernel-tools-debuginfo | 0:3.10.0-862.2.3.el7 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| suse:kernel-bigmem | 3.0.101-108.41.1 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
| suse:kernel-bigsmp | 3.0.101-0.47.106.22.1 · SUSE:Linux Enterprise Server 11 SP3-LTSS | Package registry (OSV) |
| suse:kernel-default | 3.0.101-108.41.1 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
| suse:kernel-docs | 3.0.101-108.41.1 · SUSE:Linux Enterprise Software Development Kit 11 SP4 | Package registry (OSV) |
| suse:kernel-ec2 | 3.0.101-108.41.1 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
| suse:kernel-pae | 3.0.101-108.41.1 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
| suse:kernel-ppc64 | 3.0.101-108.41.1 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
| suse:kernel-source | 3.0.101-108.41.1 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
| suse:kernel-syms | 3.0.101-108.41.1 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
| suse:kernel-trace | 3.0.101-108.41.1 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
| suse:kernel-xen | 3.0.101-108.41.1 · SUSE:Linux Enterprise Server 11 SP4 | Package registry (OSV) |
| suse:kgraft-patch-SLE12-SP2_Update_21 | 1-3.3.1 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
- Exploit-DB entry ×3
- Proof-of-concept repository on GitHub ×4
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | 4 repositories | 2018-05-10 → 2018-08-08 |
| Exploit-DB entry | local | 2018-05-22 |
| Exploit-DB entry | local | 2018-07-13 |
| Exploit-DB entry | local | 2018-07-13 |
| Metasploit module | exploit/windows/local/mov_ssMicrosoft Windows POP/MOV SS Local Privilege Elevation Vulnerabilityexploit | 2018-05-08 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Metasploit-1 d
- Published
- First PoC+1 d
- TodayNov 14, 2026+3112 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Bug bounty scope
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-19-157 · Sep 22, 2019(Huawei Ürünleri için Güvenlik Güncellemesi Yayınladı)
Not on record for this CVE: researcher credit · variant or chain candidate.
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
ATT&CK techniques
—
Change log (1)
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (19 more)Show less
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d8ba61ba58c88d5207c1ba2f7d9a2280e7d03be9
- openwall.com/lists/oss-security/2018/05/08/1
- openwall.com/lists/oss-security/2018/05/08/4
- www.huawei.com/en/psirt/security-advisories/huawei-sa-20190921-01-debug-en
- www.securityfocus.com/bid/104071
- www.securitytracker.com/id/1040744
- www.securitytracker.com/id/1040849
- www.securitytracker.com/id/1040861
- www.securitytracker.com/id/1040866
- www.securitytracker.com/id/1040882
- access.redhat.com/errata/RHSA-2018:1318
- access.redhat.com/errata/RHSA-2018:1319
- access.redhat.com/errata/RHSA-2018:1345
- access.redhat.com/errata/RHSA-2018:1346
- access.redhat.com/errata/RHSA-2018:1347
- access.redhat.com/errata/RHSA-2018:1348
- access.redhat.com/errata/RHSA-2018:1349
- access.redhat.com/errata/RHSA-2018:1350
- access.redhat.com/errata/RHSA-2018:1351
Vendor advisories and official records. Exploit/PoC links are deliberately left out.