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Linux Kernel Memory Disclosure and Privilege Escalation
Secunia Advisory: SA14270
Release Date: 2005-02-15
Last Update: 2005-03-21
Popularity: 11,652 views

Critical:
Less critical
Impact: Unknown
Exposure of sensitive information
Privilege escalation
Where: Local system
Solution Status: Vendor Patch

OS:Linux Kernel 2.6.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Some vulnerabilities have been reported in the Linux Kernel, which potentially can be exploited by malicious, local users to disclose kernel memory or gain escalated privileges.

1) A race condition in the radeon driver can potentially be exploited to gain escalated privileges.

Successful exploitation reportedly requires DRI (Direct Rendering Infrastructure) privileges on the Radeon hardware.

2) A boundary error in the i2c-viapro driver can be exploited to cause a buffer overflow during a SMBus block read and may allow execution of arbitrary code with escalated privileges.

Successful exploitation depends on the permissions set on the i2c device files and specific hardware combinations.

3) A signedness error in "/proc" can be exploited to cause a buffer overflow when the "locks_read_proc()" function is called with certain arguments.

The vulnerability has been reported in versions 2.6.10 and 2.6.11rc1-bk6 on the i386 architecture. Other versions may also be affected.

4) A signedness error in "drivers/char/n_tty.c" when copying data from kernel space into user space can be exploited to disclose kernel memory.

The vulnerability has been reported in versions 2.6.10 and 2.6.11rc1 on the i386 architecture. Other versions may also be affected.

5) Some potential errors have been reported in the "atm_get_addr()" function in "net/atm/addr.c" and in the "reiserfs_copy_from_user_to_file_region()" function in "fs/reiserfs/file.c".

Change Page:
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