CVE-2018-7755: canonical ubuntu_linux
Vulnerability summary
CVE-2018-7755 is a medium (CVSS 5.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 52.2% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 21 · Related 13Timeline
- 08-03-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in the fd_locked_ioctl function in drivers/block/floppy.c in the Linux kernel through 4.15.7. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.68%
Chance of exploitation in the next 30 days
Percentile
52%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.68% 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
1 foundExploit Reference (lkml.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu22 products
- linux< 3.13.0-153.203 | < 4.4.0-130.156 | < 4.15.0-24.26
- linux-aws< 4.4.0-1024.25 | < 4.4.0-1062.71 | < 4.15.0-1011.11
- linux-azure< 4.15.0-1014.14~16.04.1 | < 4.15.0-1014.14
- linux-azure-6.11All versions (No fix recorded)
- linux-azure-fdeAll versions (No fix recorded)
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 17.10 | 18.04
Debian1 product
- linux< 4.18.10-1
Linux1 product
- linux_kernel≤ 4.15.7
4 vendors · 25 products
