CVE-2018-18445: canonical ubuntu_linux Out-of-bounds Read
Vulnerability summary
CVE-2018-18445 is a high (CVSS 7.8) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 0.54% chance of exploitation in the next 30 days, higher than 45.3% 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 14 · Related 9Timeline
- 17-10-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.
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
0.54%
Chance of exploitation in the next 30 days
Percentile
45%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.54% 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< 4.15.0-43.46
- linux-aws< 4.15.0-1031.33
- linux-aws-hwe< 4.15.0-1031.33~16.04.1
- linux-azure< 4.15.0-1036.38~14.04.2 | < 4.15.0-1036.38~16.04.1 | < 4.15.0-1036.38
- linux-gcp< 4.15.0-1026.27~16.04.1 | < 4.15.0-1026.27
Redhat6 products
- enterprise_linux_desktop7.0
- enterprise_linux_server7.0 | 7.6
- enterprise_linux_server_aus7.6
- enterprise_linux_server_eus7.6
- enterprise_linux_server_tus7.6
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 18.10
Debian1 product
- linux< 4.18.20-1
Linux1 product
- linux_kernel≥ 4.14.9, < 4.14.75 | ≥ 4.15, < 4.18.13
5 vendors · 18 products
References
22 links- cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.13X Refsource MISCPatchRelease NotesThird Party AdvisoryREPORT
- cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.75X Refsource MISCPatchRelease NotesThird Party AdvisoryREPORT
- github.com/torvalds/linux/commit/b799207e1e1816b09e7a5920fbb2d5fcf6edd681X Refsource MISCPatchThird Party AdvisoryREPORT
Show all 22 references
- bugs.chromium.org/p/project-zero/issues/detail?id=1686X Refsource MISCIssue TrackingPatchThird Party AdvisoryREPORT
