PT-2016-4874 · Linux+5 · Linux Kernel+5
Jann Horn
·
Published
2016-06-08
·
Updated
2024-06-15
·
CVE-2016-1583
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 4.6.3
Description
The issue allows local users to gain privileges or cause a denial of service due to stack memory consumption. This is achieved through vectors involving crafted mmap calls for /proc pathnames, leading to recursive pagefault handling. The
ecryptfs privileged open function in fs/ecryptfs/kthread.c is specifically implicated in this issue.Recommendations
For Linux kernel versions prior to 4.6.3, update to version 4.6.3 or later to resolve the issue. As a temporary workaround, consider restricting access to the
ecryptfs privileged open function in fs/ecryptfs/kthread.c to minimize the risk of exploitation.Exploit
Fix
DoS
Buffer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Centos
Linux Kernel
Red Hat
Suse
Ubuntu