CVE-2018-16880: canonical ubuntu_linux Out-of-bounds Write
Vulnerability summary
CVE-2018-16880 is a high (CVSS 7.0) Out-of-bounds Write vulnerability in canonical ubuntu_linux. EPSS estimates a 0.56% chance of exploitation in the next 30 days, higher than 46.7% of scored vulnerabilities.
Not severe (CVSS 5.9, adjacent network); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 8 · Related 8Timeline
- 29-01-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in the Linux kernel's handle_rx() function in the [vhost_net] driver. A malicious virtual guest, under specific conditions, can trigger an out-of-bounds write in a kmalloc-8 slab on a virtual host which may lead to a kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out. Versions from v4.16 and newer are vulnerable.
CVSS metrics
7 scores · 4 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated7.0HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.0HighCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- NVDNIST5.9MediumCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
- OSV · UbuntuEcosystem advisory · calculated7.0HighCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.56%
Chance of exploitation in the next 30 days
Percentile
47%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.56% 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: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu3 products
- linux-azure< 4.18.0-1013.13~18.04.1
- linux-gcp-edge< 4.18.0-1007.8~18.04.1
- linux-hwe< 4.18.0-16.17~18.04.1
Canonical1 product
- ubuntu_linuxEOL18.04 | 18.10
Debian1 product
- linux< 4.19.20-1
Linux1 product
- linux_kernel≥ 4.16, < 4.19.20 | ≥ 4.20, < 4.20.7
The linux foundation1 product
- kernelfrom v4.16 and newer
5 vendors · 7 products
References
14 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16880X Refsource CONFIRMIssue TrackingPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-05/msg00037.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- git.kernel.org/pub/…REPORT
