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.
Published: 2018-03-08
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1531-1 linux-4.9 security update
Debian DSA Debian DSA DSA-4308-1 linux security update
EUVD EUVD EUVD-2018-19467 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.
Ubuntu USN Ubuntu USN USN-3695-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3695-2 Linux kernel (HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3696-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3696-2 Linux kernel (Xenial HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-3697-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3697-2 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-3698-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-3698-2 Linux kernel (Trusty HWE) vulnerabilities
History

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Canonical Ubuntu Linux
Linux Linux Kernel
Redhat Enterprise Linux Rhel Extras Rt
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T06:37:58.053Z

Reserved: 2018-03-08T00:00:00.000Z

Link: CVE-2018-7755

cve-icon Vulnrichment

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cve-icon NVD

Status : Modified

Published: 2018-03-08T07:29:01.330

Modified: 2024-11-21T04:12:40.370

Link: CVE-2018-7755

cve-icon Redhat

Severity : Low

Publid Date: 2018-03-08T00:00:00Z

Links: CVE-2018-7755 - Bugzilla

cve-icon OpenCVE Enrichment

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Weaknesses