Scientific Linux Security Update : kernel on SL4.x i386/x86_64

This script is Copyright (C) 2012 Tenable Network Security, Inc.

Synopsis :

The remote Scientific Linux host is missing one or more security

Description :

This update fixes the following security issues :

- Information leak flaws were found in the Linux kernel
Traffic Control Unit implementation. A local attacker
could use these flaws to cause the kernel to leak kernel
memory to user-space, possibly leading to the disclosure
of sensitive information. (CVE-2010-2942, Moderate)

- A flaw was found in the tcf_act_police_dump() function
in the Linux kernel network traffic policing
implementation. A data structure in
tcf_act_police_dump() was not initialized properly
before being copied to user-space. A local, unprivileged
user could use this flaw to cause an information leak.
(CVE-2010-3477, Moderate)

- A missing upper bound integer check was found in the
sys_io_submit() function in the Linux kernel
asynchronous I/O implementation. A local, unprivileged
user could use this flaw to cause an information leak.
(CVE-2010-3067, Low)

This update also fixes the following bugs :

- When two systems using bonding devices in the adaptive
load balancing (ALB) mode communicated with each other,
an endless loop of ARP replies started between these two
systems due to a faulty MAC address update. With this
update, the MAC address update no longer creates
unneeded ARP replies. (BZ#629239)

- When running the Connectathon NFS Testsuite with certain
clients and Scientific Linux 4.8 as the server,
nfsvers4, lock, and test2 failed the Connectathon test.

- For UDP/UNIX domain sockets, due to insufficient memory
barriers in the network code, a process sleeping in
select() may have missed notifications about new data.
In rare cases, this bug may have caused a process to
sleep forever. (BZ#640117)

- In certain situations, a bug found in either the HTB or
TBF network packet schedulers in the Linux kernel could
have caused a kernel panic when using Broadcom network
cards with the bnx2 driver. (BZ#624363)

- Previously, allocating fallback cqr for DASD
reserve/release IOCTLs failed because it used the memory
pool of the respective device. This update preallocates
sufficient memory for a single reserve/release request.

- In some situations a bug prevented 'force online'
succeeding for a DASD device. (BZ#626827)

- Using the 'fsstress' utility may have caused a kernel
panic. (BZ#633968)

- This update introduces additional stack guard patches.

- A bug was found in the way the megaraid_sas driver
handled physical disks and management IOCTLs. All
physical disks were exported to the disk layer, allowing
an oops in megasas_complete_cmd_dpc() when completing
the IOCTL command if a timeout occurred. (BZ#631903)

- Previously, a warning message was returned when a large
amount of messages was passed through netconsole and a
considerable amount of network load was added. With this
update, the warning message is no longer displayed.

- Executing a large 'dd' command (1 to 5GB) on an iSCSI
device with the qla3xxx driver caused a system crash due
to the incorrect storing of a private data structure.
With this update, the size of the stored data structure
is checked and the system crashes no longer occur.

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

See also :

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.9

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 60871 ()

Bugtraq ID:

CVE ID: CVE-2010-2942