CVE-2017-5669

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Summary

CVECVE-2017-5669
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-02-24 15:59:00 UTC
Updated2020-10-09 14:49:00 UTC
DescriptionThe do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the mmap system call, by making crafted shmget and shmat system calls in a privileged context.

Risk And Classification

Problem Types: NVD-CWE-noinfo

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 12.04 All All All
Operating System Canonical Ubuntu Linux 14.04 All All All
Operating System Canonical Ubuntu Linux 12.04 All All All
Operating System Canonical Ubuntu Linux 14.04 All All All
Operating System Debian Debian Linux 8.0 All All All
Operating System Debian Debian Linux 8.0 All All All
Operating System Linux Linux Kernel All All All All
Operating System Linux Linux Kernel All All All All

References

ReferenceSourceLinkTags
Debian -- Security Information -- DSA-3804-1 linux DEBIAN www.debian.org Third Party Advisory
Linux Kernel CVE-2017-5669 Local Security Bypass Vulnerability BID www.securityfocus.com Third Party Advisory, VDB Entry
ipc/shm: Fix shmat mmap nil-page protection · torvalds/linux@95e91b8 · GitHub MISC github.com Patch, Third Party Advisory
Linux Kernel do_shmat() Flaw Lets Local Users Bypass Security Restrictions - SecurityTracker SECTRACK www.securitytracker.com Third Party Advisory, VDB Entry
USN-3583-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu security notices UBUNTU usn.ubuntu.com Third Party Advisory
192931 – Shmat allows mmap null page protection bypass MISC bugzilla.kernel.org Issue Tracking, Patch, Vendor Advisory
USN-3583-1: Linux kernel vulnerabilities | Ubuntu security notices UBUNTU usn.ubuntu.com Third Party Advisory
ipc/shm: Fix shmat mmap nil-page protection · torvalds/linux@e1d35d4 · GitHub CONFIRM github.com Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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