CVE-2018-8781: canonical ubuntu_linux Integer Overflow or Wraparound
Vulnerability summary
CVE-2018-8781 is a high (CVSS 7.8) Integer Overflow or Wraparound vulnerability in canonical ubuntu_linux. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 42.2% 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 65 · Related 59Timeline
- 23-04-2018PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
The udl_fb_mmap function in drivers/gpu/drm/udl/udl_fb.c at the Linux kernel version 3.4 and up to and including 4.15 has an integer-overflow vulnerability allowing local users with access to the udldrmfb driver to obtain full read and write permissions on kernel physical pages, resulting in a code execution in kernel space.
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
0.49%
Chance of exploitation in the next 30 days
Percentile
42%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.49% 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.
Ubuntu17 products
- linux< 3.13.0-151.201 | < 4.4.0-127.153
- linux-aws< 4.4.0-1022.22 | < 4.4.0-1060.69
- linux-azure< 4.15.0-1013.13~16.04.2
- linux-azure-fdeAll versions (No fix recorded)
- linux-fips< 4.4.0-1008.10
Redhat3 products
Debian2 products
- linux< 4.15.17-1
- debian_linuxEOL7.0 | 8.0 | 9.0
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 17.10
Check point software technologies ltd.1 product
- linux kernelkernel version 3.4 and up to and including 4.15
Linux1 product
- linux_kernel≥ 3.4, < 3.16.57 | ≥ 3.17, < 3.18.103 | ≥ 3.19, < 4.1.52 | ≥ 4.2, < 4.4.125 | ≥ 4.5, < 4.9.91 | ≥ 4.10, < 4.14.31 | ≥ 4.15, < 4.15.14
6 vendors · 25 products
References
26 links
- patchwork.freedesktop.org/patch/211845/X Refsource MISCIssue TrackingPatchThird Party AdvisoryREPORT
Show all 26 references
- lists.debian.org/debian-lts-announce/2018/05/msg00000.htmlMailing ListX Refsource MLISTThird Party Advisory