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MiracleLinux 4 : kernel-2.6.32-642.4.2.el6 (AXSA:2016-679:07)
medium Nessus Plugin ID 289490
Synopsis
The remote MiracleLinux host is missing a security update.Description
The remote MiracleLinux 4 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2016-679:07 advisory.The kernel package contains the Linux kernel (vmlinuz), the core of any Linux operating system. The kernel handles the basic functions of the operating system: memory allocation, process allocation, device input and output, etc.
Security issues fixed with this release:
CVE-2016-5696 net/ipv4/tcp_input.c in the Linux kernel before 4.7 does not properly determine the rate of challenge ACK segments, which makes it easier for man-in-the-middle attackers to hijack TCP sessions via a blind in- window attack.
Fixed bugs:
* When loading the Direct Rendering Manager (DRM) kernel module, the kernel panicked if DRM was previously unloaded. The kernel panic was caused by a memory leak of the ID Resolver (IDR2). With this update, IDR2 is loaded during kernel boot, and the kernel panic no longer occurs in the described scenario.
* When more than one process attempted to use the configfs directory entry at the same time, a kernel panic in some cases occurred. With this update, a race condition between a directory entry and a lookup operation has been fixed. As a result, the kernel no longer panics in the described scenario.
* When shutting down the system by running the halt -p command, a kernel panic occurred due to a conflict between the kernel offlining CPUs and the sched command, which used the sched group and the sched domain data without first checking the data. The underlying source code has been fixed by adding a check to avoid the conflict. As a result, the described scenario no longer results in a kernel panic.
* In some cases, running the ipmitool command caused a kernel panic due to a race condition in the ipmi message handler. This update fixes the race condition, and the kernel panic no longer occurs in the described scenario.
* Previously, multiple Very Secure FTP daemon (vsftpd) processes on a directory with a large number of files led to a high contention rate on each inode's spinlock, which caused excessive CPU usage. With this update, a spinlock to protect a single memory-to-memory copy has been removed from the ext4_getattr() function. As a result, system CPU usage has been reduced and is no longer excessive in the described situation.
* When the gfs2_grow utility is used to extend Global File System 2 (GFS2), the next block allocation causes the GFS2 kernel module to re-read its resource group index. If multiple processes in the GFS2 module raced to do the same thing, one process sometimes overwrote a valid object pointer with an invalid pointer, which caused either a kernel panic or a file system corruption. This update ensures that the resource group object pointer is not overwritten. As a result, neither kernel panic nor file system corruption occur in the described scenario.
* Previously, the SCSI Remote Protocol over InfiniBand (IB-SRP) was disabled due to a bug in the srp_queue() function. As a consequence, an attempt to enable the Remote Direct Memory Access (RDMA) at boot caused the kernel to crash. With this update, srp_queue() has been fixed, and the system now boots as expected when RDMA is enabled.
Enhancements:
* This update optimizes the efficiency of the Transmission Control Protocol (TCP) when the peer is using a window under 537 bytes in size. As a result, devices that use maximum segment size (MSS) of 536 bytes or fewer will experience improved network performance.
Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
Plugin Details
Severity: Medium
ID: 289490
File Name: miracle_linux_AXSA-2016-679.nasl
Version: 1.1
Type: local
Published: 1/16/2026
Updated: 1/16/2026
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.3
Vendor
Vendor Severity: High
CVSS v2
Risk Factor: Medium
Base Score: 5.8
Temporal Score: 4.5
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P
CVSS Score Source: CVE-2016-5696
CVSS v3
Risk Factor: Medium
Base Score: 4.8
Temporal Score: 4.3
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:miracle:linux:kernel-debug, p-cpe:/a:miracle:linux:perf, p-cpe:/a:miracle:linux:kernel, p-cpe:/a:miracle:linux:kernel-headers, cpe:/o:miracle:linux:4, p-cpe:/a:miracle:linux:kernel-firmware, p-cpe:/a:miracle:linux:kernel-abi-whitelists, p-cpe:/a:miracle:linux:kernel-debug-devel, p-cpe:/a:miracle:linux:kernel-devel
Required KB Items: Host/local_checks_enabled, Host/MiracleLinux/release, Host/MiracleLinux/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 9/20/2016
Vulnerability Publication Date: 7/12/2016
Reference Information
CVE: CVE-2016-5696