CVE-2018-20855: linux linux_kernel
Vulnerability summary
CVE-2018-20855 is a low (CVSS 3.3) vulnerability in linux linux_kernel. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 40.5% of scored vulnerabilities.
Not severe (CVSS 3.3, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 14 · Related 14Timeline
- 26-07-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in the Linux kernel before 4.18.7. In create_qp_common in drivers/infiniband/hw/mlx5/qp.c, mlx5_ib_create_qp_resp was never initialized, resulting in a leak of stack memory to userspace.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated3.3LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- OSV · DebianEcosystem advisory · calculated3.3LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS trend
Probability
0.47%
Chance of exploitation in the next 30 days
Percentile
41%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.47% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu14 products
- linux< 4.2.0-16.19 | < 4.13.0-16.19
- linux-aws< 4.4.0-1001.10 | < 4.15.0-1001.1
- linux-aws-hwe< 4.15.0-1030.31~16.04.1
- linux-azure< 4.11.0-1009.9 | < 4.15.0-1002.2
- linux-gcp< 4.10.0-1004.4 | < 4.15.0-1001.1
Netapp4 products
- active_iq_performance_analytics_servicesna
- active_iq_unified_manager≥ 9.5 (No fix recorded)
- data_availability_servicesna
- element_softwarena
Debian1 product
- linux< 4.18.8-1
Linux1 product
- linux_kernel< 4.18.7
Opensuse1 product
- leapEOL15.0 | 15.1
5 vendors · 21 products
References
9 links- github.com/torvalds/linux/commit/0625b4ba1a5d4703c7fb01c497bd6c156908af00X Refsource MISCPatchThird Party AdvisoryREPORT
- cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.7X Refsource MISCMailing ListRelease NotesVendor AdvisoryREPORT
- lists.opensuse.org/opensuse-security-announce/2019-08/msg00055.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-08/msg00056.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
