Vulnerabilities > CVE-2016-6516 - Race Condition vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
HIGH Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
Race condition in the ioctl_file_dedupe_range function in fs/ioctl.c in the Linux kernel through 4.7 allows local users to cause a denial of service (heap-based buffer overflow) or possibly gain privileges by changing a certain count value, aka a "double fetch" vulnerability.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Leveraging Race Conditions This attack targets a race condition occurring when multiple processes access and manipulate the same resource concurrently and the outcome of the execution depends on the particular order in which the access takes place. The attacker can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance a race condition can occur while accessing a file, the attacker can trick the system by replacing the original file with his version and cause the system to read the malicious file.
- Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.
Nessus
| NASL family | Huawei Local Security Checks |
| NASL id | EULEROS_SA-2019-1506.NASL |
| description | According to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - The pagemap_open function in fs/proc/task_mmu.c in the Linux kernel before 3.19.3, as used in Android 6.0.1 before 2016-03-01, allows local users to obtain sensitive physical-address information by reading a pagemap file, aka Android internal bug 25739721.(CVE-2016-0823i1/4%0 - drivers/hid/hid-steelseries.c in the Human Interface Device (HID) subsystem in the Linux kernel through 3.11, when CONFIG_HID_STEELSERIES is enabled, allows physically proximate attackers to cause a denial of service (heap-based out-of-bounds write) via a crafted device.(CVE-2013-2891i1/4%0 - The overlayfs implementation in the Linux kernel through 4.5.2 does not properly maintain POSIX ACL xattr data, which allows local users to gain privileges by leveraging a group-writable setgid directory.(CVE-2016-1575i1/4%0 - Integer overflow in the vc4_get_bcl function in drivers/gpu/drm/vc4/vc4_gem.c in the VideoCore DRM driver in the Linux kernel before 4.9.7 allows local users to cause a denial of service or possibly have unspecified other impact via a crafted size value in a VC4_SUBMIT_CL ioctl call.(CVE-2017-5576i1/4%0 - The KVM subsystem in the Linux kernel through 3.12.5 allows local users to gain privileges or cause a denial of service (system crash) via a VAPIC synchronization operation involving a page-end address.(CVE-2013-6368i1/4%0 - It was found that the code in net/sctp/socket.c in the Linux kernel through 4.10.1 does not properly restrict association peel-off operations during certain wait states, which allows local users to cause a denial of service (invalid unlock and double free) via a multithreaded application. This vulnerability was introduced by CVE-2017-5986 fix (commit 2dcab5984841).(CVE-2017-6353i1/4%0 - net/netfilter/nf_conntrack_proto_dccp.c in the Linux kernel through 3.13.6 uses a DCCP header pointer incorrectly, which allows remote attackers to cause a denial of service (system crash) or possibly execute arbitrary code via a DCCP packet that triggers a call to the (1) dccp_new, (2) dccp_packet, or (3) dccp_error function.(CVE-2014-2523i1/4%0 - Race condition vulnerability was found in drivers/misc/mic/vop/vop_vringh.c in the MIC VOP driver in the Linux kernel before 4.6.1. MIC VOP driver does two successive reads from user space to read a variable length data structure. Local user can obtain sensitive information from kernel memory or can cause DoS by corrupting kernel memory if the data structure changes between the two reads.(CVE-2016-5728i1/4%0 - An issue was discovered in the btrfs filesystem code in the Linux kernel. An invalid pointer dereference in io_ctl_map_page() when mounting and operating a crafted btrfs image is due to a lack of block group item validation in check_leaf_item() in fs/btrfs/tree-checker.c function. This could lead to a system crash and a denial of service.(CVE-2018-14613i1/4%0 - A flaw was found in the way the Linux kernel handled GS segment register base switching when recovering from a #SS (stack segment) fault on an erroneous return to user space. A local, unprivileged user could use this flaw to escalate their privileges on the system.(CVE-2014-9322i1/4%0 - The keyring_search_aux function in security/keys/keyring.c in the Linux kernel allows local users to cause a denial of service via a request_key system call for the |
| last seen | 2020-03-19 |
| modified | 2019-05-13 |
| plugin id | 124829 |
| published | 2019-05-13 |
| reporter | This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/124829 |
| title | EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1506) |
| code | |
References
- https://github.com/torvalds/linux/commit/10eec60ce79187686e052092e5383c99b4420a20
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=10eec60ce79187686e052092e5383c99b4420a20
- http://www.openwall.com/lists/oss-security/2016/07/31/6
- https://bugzilla.redhat.com/show_bug.cgi?id=1362457
- http://www.securityfocus.com/bid/92259