Mandrake Linux Security Advisory : kernel (MDKSA-2007:040)

This script is Copyright (C) 2007-2015 Tenable Network Security, Inc.


Synopsis :

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

Description :

Some vulnerabilities were discovered and corrected in the Linux 2.6
kernel :

The isdn_ppp_ccp_reset_alloc_state function in drivers/isdn/isdn_ppp.c
in the Linux 2.4 kernel before 2.4.34-rc4, as well as the 2.6 kernel,
does not call the init_timer function for the ISDN PPP CCP reset state
timer, which has unknown attack vectors and results in a system crash.
(CVE-2006-5749)

The listxattr syscall can corrupt user space under certain
circumstances. The problem seems to be related to signed/unsigned
conversion during size promotion. (CVE-2006-5753)

The ext3fs_dirhash function in Linux kernel 2.6.x allows local users
to cause a denial of service (crash) via an ext3 stream with malformed
data structures. (CVE-2006-6053)

The mincore function in the Linux kernel before 2.4.33.6, as well as
the 2.6 kernel, does not properly lock access to user space, which has
unspecified impact and attack vectors, possibly related to a deadlock.
(CVE-2006-4814)

The provided packages are patched to fix these vulnerabilities. All
users are encouraged to upgrade to these updated kernels immediately
and reboot to effect the fixes.

In addition to these security fixes, other fixes have been included
such as :

- Add Ralink RT2571W/RT2671 WLAN USB support (rt73 module)
- Fix sys_msync() to report -ENOMEM as before when an
unmapped area falls within its range, and not to
overshoot (LSB regression) - Avoid disk sector_t
overflow for >2TB ext3 filesystem - USB: workaround to
fix HP scanners detection (#26728) - USB: unusual_devs.h
for Sony floppy (#28378) - Add preliminary ICH9 support
- Add TI sd card reader support - Add RT61 driver - KVM
update - Fix bttv vbi offset

To update your kernel, please follow the directions located at :

http://www.mandriva.com/en/security/kernelupdate

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 6.3
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: Mandriva Local Security Checks

Nessus Plugin ID: 24653 (mandrake_MDKSA-2007-040.nasl)

Bugtraq ID: 21663
21835
22316

CVE ID: CVE-2006-4814
CVE-2006-5749
CVE-2006-5753
CVE-2006-6053

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