Scientific Linux Security Update : kernel on SL5.x i386/x86_64 (20150210)

high Nessus Plugin ID 81308

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Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

- 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. (CVE-2014-7822, Moderate)

This update also fixes the following bugs :

- Previously, hot-unplugging of a virtio-blk device could in some cases lead to a kernel panic, for example during in-flight I/O requests. This update fixes race condition in the hot-unplug code in the virtio_blk.ko module. As a result, hot unplugging of the virtio-blk device no longer causes the guest kernel oops when there are in-flight I/O requests.

- Before this update, due to a bug in the error-handling path, a corrupted metadata block could be used as a valid block. With this update, the error handling path has been fixed and more checks have been added to verify the metadata block. Now, when a corrupted metadata block is encountered, it is properly marked as corrupted and handled accordingly.

- Previously, an incorrectly initialized variable resulted in a random value being stored in the variable that holds the number of default ACLs, and is sent in the SET_PATH_INFO data structure. Consequently, the setfacl command could, under certain circumstances, fail with an 'Invalid argument' error. With this update, the variable is correctly initialized to zero, thus fixing the bug.

The system must be rebooted for this update to take effect.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 81308

File Name: sl_20150210_kernel_on_SL5_x.nasl

Version: 1.6

Type: local

Agent: unix

Family: Scientific Linux Local Security Checks

Published: 2/12/2015

Updated: 1/14/2021

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.1

CVSS v2

Risk Factor: High

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:kernel-debug, p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo, p-cpe:/a:fermilab:scientific_linux:kernel-xen-devel, p-cpe:/a:fermilab:scientific_linux:kernel-pae-debuginfo, p-cpe:/a:fermilab:scientific_linux:kernel-pae-devel, p-cpe:/a:fermilab:scientific_linux:kernel-doc, x-cpe:/o:fermilab:scientific_linux, p-cpe:/a:fermilab:scientific_linux:kernel-debug-devel, p-cpe:/a:fermilab:scientific_linux:kernel-devel, p-cpe:/a:fermilab:scientific_linux:kernel-xen-debuginfo, p-cpe:/a:fermilab:scientific_linux:kernel-headers, p-cpe:/a:fermilab:scientific_linux:kernel-debuginfo-common, p-cpe:/a:fermilab:scientific_linux:kernel, p-cpe:/a:fermilab:scientific_linux:kernel-xen, p-cpe:/a:fermilab:scientific_linux:kernel-pae, p-cpe:/a:fermilab:scientific_linux:kernel-debug-debuginfo

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Patch Publication Date: 2/10/2015

Vulnerability Publication Date: 3/16/2015

Reference Information

CVE: CVE-2014-7822

Detections

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