CVE-2018-15471: canonical ubuntu_linux Out-of-bounds Read
Vulnerability summary
CVE-2018-15471 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 0.33% chance of exploitation in the next 30 days, higher than 26% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 11 · Related 6Timeline
- 17-08-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in xenvif_set_hash_mapping in drivers/net/xen-netback/hash.c in the Linux kernel through 4.18.1, as used in Xen through 4.11.x and other products. The Linux netback driver allows frontends to control mapping of requests to request queues. When processing a request to set or change this mapping, some input validation (e.g., for an integer overflow) was missing or flawed, leading to OOB access in hash handling. A malicious or buggy frontend may cause the (usually privileged) backend to make out of bounds memory accesses, potentially resulting in one or more of privilege escalation, Denial of Service (DoS), or information leaks.
CVSS metrics
5 scores · 3 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.33%
Chance of exploitation in the next 30 days
Percentile
26%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.33% 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.
Ubuntu9 products
- linux< 4.15.0-39.42
- linux-aws< 4.15.0-1027.27
- linux-azure< 4.15.0-1031.32~14.04.1 | < 4.15.0-1031.32~16.04.1 | < 4.15.0-1031.32
- linux-azure-edge< 4.18.0-1006.6~16.04.2
- linux-gcp< 4.15.0-1024.25~16.04.2 | < 4.15.0-1024.25
Suse2 products
- kernel-livepatch-SLE15_Update_0&distro=SUSE Linux Enterprise Live Patching 15< 3-7.3
- kernel-livepatch-SLE15_Update_1&distro=SUSE Linux Enterprise Live Patching 15< 3-2.1
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 18.10
Debian1 product
- linux< 4.18.10-2
Linux1 product
- linux_kernel≥ 4.7, < 4.9.133 | ≥ 4.10, < 4.14.76 | ≥ 4.15, < 4.18.14
Xen1 product
- xen≤ 4.11.0
6 vendors · 15 products
References
20 links
- lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlMailing ListX Refsource MLISTThird Party Advisory