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CVE-2014-8173

Status Candidate

Overview

The pmd_none_or_trans_huge_or_clear_bad function in include/asm-generic/pgtable.h in the Linux kernel before 3.13 on NUMA systems does not properly determine whether a Page Middle Directory (PMD) entry is a transparent huge-table entry, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted MADV_WILLNEED madvise system call that leverages the absence of a page-table lock.

Related Files

Red Hat Security Advisory 2015-0694-01
Posted Mar 18, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-0694-01 - The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's XFS file system handled replacing of remote attributes under certain conditions. A local user with access to XFS file system mount could potentially use this flaw to escalate their privileges on the system. A flaw was found in the way the Linux kernel's splice() system call validated its parameters. On certain file systems, a local, unprivileged user could use this flaw to write past the maximum file size, and thus crash the system.

tags | advisory, remote, kernel, local
systems | linux, redhat
advisories | CVE-2014-7822, CVE-2014-8086, CVE-2014-8172, CVE-2014-8173, CVE-2015-0274
SHA-256 | 0e711acf0df6e837643b849c9bb486ba31ff24ef22e412c4d7f4581de627ee57
Red Hat Security Advisory 2015-0290-01
Posted Mar 5, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-0290-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way the Linux kernel's XFS file system handled replacing of remote attributes under certain conditions. A local user with access to XFS file system mount could potentially use this flaw to escalate their privileges on the system. It was found that the Linux kernel's KVM implementation did not ensure that the host CR4 control register value remained unchanged across VM entries on the same virtual CPU. A local, unprivileged user could use this flaw to cause denial of service on the system.

tags | advisory, remote, denial of service, kernel, local
systems | linux, redhat
advisories | CVE-2014-3690, CVE-2014-3940, CVE-2014-7825, CVE-2014-7826, CVE-2014-8086, CVE-2014-8160, CVE-2014-8172, CVE-2014-8173, CVE-2014-8709, CVE-2014-8884, CVE-2015-0274
SHA-256 | 1aebc78eb21f1a9fa9c0602f7e6c1ee22261ff3e5cb9a63185775754015e6f78
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