Linux kernel copy_from_User information disclosure

kernel-copyfromuser-information-disclosure (29378) The risk level is classified as MediumMedium Risk

Description:

Linux kernel could allow a local attacker to obtain sensitive information, caused by improper clearing of kernel memory after receiving a fault by the copy_from_User function. By appending to a file from an invalid address, a local attacker could read kernel memory.

*CVSS:

Base Score: 2.5
  Access Vector: Local
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: Partial
  Integrity Impact: None
  Availability Impact: None
 
Temporal Score: 1.8
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Obtain Information

Remedy:

Upgrade to the latest version of Linux Kernel (version 2.6.19-rc1 or later), available from the Linux Kernel Web site. See References.

For Red Hat Linux 3:
Refer to RHSA-2006:0710-7 for patch, upgrade, or suggested workaround information. See References.

For Red Hat Linux (kernel):
Refer to RHSA-2007:0014 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

References:

  • The Linux Kernel Archives: ChangeLog-2.6.19-rc1.
  • The Linux Kernel Archives Web site: The Linux Kernel Archives.
  • ASA-2006-254: kernel security update (RHSA-2006-0710)
  • ASA-2007-063: kernel security update (RHSA-2007-0014)
  • BID-20379: Linux Kernel S/390 Copy_From_User Local Information Disclosure Vulnerability
  • CVE-2006-5174: The copy_from_user function in the uaccess code in Linux kernel 2.6 before 2.6.19-rc1, when running on s390, does not properly clear a kernel buffer, which allows local user space programs to read portions of kernel memory by appending to a file from a bad address
  • DSA-1233: kernel-source-2.6.8 -- several vulnerabilities
  • DSA-1237: kernel-source-2.4.27 -- several vulnerabilities
  • RHSA-2006-0710: kernel security update
  • RHSA-2007-0014: Important: kernel security update
  • SA22289: Linux Kernel s390 "copy_from_user" Information Disclosure
  • SA23064: Avaya Products Linux Kernel Multiple Vulnerabilities
  • SA24206: Avaya Products Kernel Multiple Vulnerabilities
  • SECTRACK ID: 1017090: Linux Kernel `uaccess` S/390 Code Discloses Kernel Memory to Local Users
  • SUSE-SA:2006:079: Linux kernel security problems
  • VUPEN/ADV-2006-3938: Linux Kernel s390 copy_from_user Local Information Disclosure Vulnerability

Platforms Affected:

  • Debian Debian Linux 3.1
  • Linux Linux Kernel 2.6.14.1
  • Linux Kernel 2.6.0 test3
  • Linux Kernel 2.6.0 test1
  • Linux Kernel 2.6.0 test10
  • Linux Kernel 2.6.0 test11
  • Linux Kernel 2.6.0 test2
  • Linux Kernel 2.6.0 test9
  • Linux Kernel 2.6.0 test4
  • Linux Kernel 2.6.0 test5
  • Linux Kernel 2.6.0 test6
  • Linux Kernel 2.6.0 test7
  • Linux Kernel 2.6.0 test8
  • Linux Kernel 2.6.0
  • Linux Kernel 2.6.1 rc3
  • Linux Kernel 2.6.1 rc2
  • Linux Kernel 2.6.1 rc1
  • Linux Kernel 2.6.1
  • Linux Kernel 2.6.10 rc3
  • Linux Kernel 2.6.10 rc1
  • Linux Kernel 2.6.10 rc2
  • Linux Kernel 2.6.10
  • Linux Kernel 2.6.11 rc3
  • Linux Kernel 2.6.11 rc2
  • Linux Kernel 2.6.11 rc5
  • Linux Kernel 2.6.11 rc4
  • Linux Kernel 2.6.11 rc1
  • Linux Kernel 2.6.11
  • Linux Kernel 2.6.11.1
  • Linux Kernel 2.6.11.10
  • Linux Kernel 2.6.11.11
  • Linux Kernel 2.6.11.12
  • Linux Kernel 2.6.11.2
  • Linux Kernel 2.6.11.3
  • Linux Kernel 2.6.11.4
  • Linux Kernel 2.6.11.5
  • Linux Kernel 2.6.11.6
  • Linux Kernel 2.6.11.7
  • Linux Kernel 2.6.11.8
  • Linux Kernel 2.6.11.9
  • Linux Kernel 2.6.12 rc6
  • Linux Kernel 2.6.12 rc3
  • Linux Kernel 2.6.12 rc5
  • Linux Kernel 2.6.12 rc2
  • Linux Kernel 2.6.12 rc1
  • Linux Kernel 2.6.12 rc4
  • Linux Kernel 2.6.12
  • Linux Kernel 2.6.12.1
  • Linux Kernel 2.6.12.12
  • Linux Kernel 2.6.12.2
  • Linux Kernel 2.6.12.22
  • Linux Kernel 2.6.12.3
  • Linux Kernel 2.6.12.4
  • Linux Kernel 2.6.12.5
  • Linux Kernel 2.6.12.6
  • Linux Kernel 2.6.13 rc4
  • Linux Kernel 2.6.13 rc3
  • Linux Kernel 2.6.13 rc7
  • Linux Kernel 2.6.13 rc6
  • Linux Kernel 2.6.13 rc5
  • Linux Kernel 2.6.13 rc2
  • Linux Kernel 2.6.13 rc1
  • Linux Kernel 2.6.13
  • Linux Kernel 2.6.13.1
  • Linux Kernel 2.6.13.2
  • Linux Kernel 2.6.13.3
  • Linux Kernel 2.6.13.4
  • Linux Kernel 2.6.13.5
  • Linux Kernel 2.6.14 rc5
  • Linux Kernel 2.6.14 rc3
  • Linux Kernel 2.6.14 rc4
  • Linux Kernel 2.6.14
  • Linux Kernel 2.6.14 rc1
  • Linux Kernel 2.6.14 rc2
  • Linux Kernel 2.6.15 rc6
  • Linux Kernel 2.6.15 rc1
  • Linux Kernel 2.6.15 rc2
  • Linux Kernel 2.6.15 rc4
  • Linux Kernel 2.6.15 rc3
  • Linux Kernel 2.6.15 rc5
  • Linux Kernel 2.6.15 rc7
  • Linux Kernel 2.6.15.11
  • Linux Kernel 2.6.16 rc7
  • Linux Kernel 2.6.17 rc4
  • Linux Kernel 2.6.17 rc3
  • Linux Kernel 2.6.17 rc2
  • Linux Kernel 2.6.17 rc6
  • Linux Kernel 2.6.17 rc5
  • Linux Kernel 2.6.17 rc1
  • Linux Kernel 2.6.18.10
  • Linux Kernel 2.6.18.11
  • Linux Kernel 2.6.18.12
  • Linux Kernel 2.6.18.13
  • Linux Kernel 2.6.18.14
  • Linux Kernel 2.6.18.15
  • Linux Kernel 2.6.18.16
  • Linux Kernel 2.6.18.17
  • Linux Kernel 2.6.18.18
  • Linux Kernel 2.6.18.19
  • Linux Kernel 2.6.18.20
  • Linux Kernel 2.6.18.21
  • Linux Kernel 2.6.18.22
  • Linux Kernel 2.6.18.23
  • Linux Kernel 2.6.18.24
  • Linux Kernel 2.6.18.25
  • Linux Kernel 2.6.18.26
  • Linux Kernel 2.6.18.27
  • Linux Kernel 2.6.18.28
  • Linux Kernel 2.6.18.29
  • Linux Kernel 2.6.18.30
  • Linux Kernel 2.6.18.31
  • Linux Kernel 2.6.18.32
  • Linux Kernel 2.6.18.33
  • Linux Kernel 2.6.18.34
  • Linux Kernel 2.6.18.35
  • Linux Kernel 2.6.18.36
  • Linux Kernel 2.6.18.37
  • Linux Kernel 2.6.18.38
  • Linux Kernel 2.6.18.39
  • Linux Kernel 2.6.18.40
  • Linux Kernel 2.6.18.41
  • Linux Kernel 2.6.18.42
  • Linux Kernel 2.6.18.43
  • Linux Kernel 2.6.18.44
  • Linux Kernel 2.6.18.45
  • Linux Kernel 2.6.18.46
  • Linux Kernel 2.6.18.47
  • Linux Kernel 2.6.18.48
  • Linux Kernel 2.6.18.49
  • Linux Kernel 2.6.18.50
  • Linux Kernel 2.6.18.51
  • Linux Kernel 2.6.18.52
  • Linux Kernel 2.6.18.53
  • Linux Kernel 2.6.18.9
  • Linux Kernel 2.6.2 rc2
  • Linux Kernel 2.6.2 rc1
  • Linux Kernel 2.6.2 rc3
  • Linux Kernel 2.6.3 rc2
  • Linux Kernel 2.6.3 rc1
  • Linux Kernel 2.6.3 rc4
  • Linux Kernel 2.6.3 rc3
  • Linux Kernel 2.6.3
  • Linux Kernel 2.6.4 rc3
  • Linux Kernel 2.6.4 rc2
  • Linux Kernel 2.6.4 rc1
  • Linux Kernel 2.6.4
  • Linux Kernel 2.6.5 rc3
  • Linux Kernel 2.6.5 rc2
  • Linux Kernel 2.6.5 rc1
  • Linux Kernel 2.6.5
  • Linux Kernel 2.6.6 rc2
  • Linux Kernel 2.6.6 rc1
  • Linux Kernel 2.6.6 rc3
  • Linux Kernel 2.6.6
  • Linux Kernel 2.6.7 rc2
  • Linux Kernel 2.6.7 rc1
  • Linux Kernel 2.6.7 rc3
  • Linux Kernel 2.6.7
  • Linux Kernel 2.6.8 rc3
  • Linux Kernel 2.6.8 rc2
  • Linux Kernel 2.6.8 rc1
  • Linux Kernel 2.6.8 rc4
  • Linux Kernel 2.6.8
  • Linux Kernel 2.6.8.1
  • Linux Kernel 2.6.9 rc4
  • Linux Kernel 2.6.9 rc3
  • Linux Kernel 2.6.9 rc2
  • Linux Kernel 2.6.9 rc1
  • Linux Kernel 2.6.9
  • Linux Linux Kernel 2.6.14.2
  • Linux Linux Kernel 2.6.14.3
  • Linux Linux Kernel 2.6.14.4
  • Linux Linux Kernel 2.6.14.5
  • Linux Linux Kernel 2.6.14.6
  • Linux Linux Kernel 2.6.14.7
  • Linux Linux Kernel 2.6.15
  • Linux Linux Kernel 2.6.15.1
  • Linux Linux Kernel 2.6.15.2
  • Linux Linux Kernel 2.6.15.3
  • Linux Linux Kernel 2.6.15.4
  • Linux Linux Kernel 2.6.15.5
  • Linux Linux Kernel 2.6.15.6
  • Linux Linux Kernel 2.6.15.7
  • Linux Linux Kernel 2.6.16
  • Linux Linux Kernel 2.6.16 rc3
  • Linux Linux Kernel 2.6.16 rc4
  • Linux Linux Kernel 2.6.16 rc5
  • Linux Linux Kernel 2.6.16 rc6
  • Linux Linux Kernel 2.6.16.1
  • Linux Linux Kernel 2.6.16.10
  • Linux Linux Kernel 2.6.16.11
  • Linux Linux Kernel 2.6.16.12
  • Linux Linux Kernel 2.6.16.13
  • Linux Linux Kernel 2.6.16.14
  • Linux Linux Kernel 2.6.16.15
  • Linux Linux Kernel 2.6.16.16
  • Linux Linux Kernel 2.6.16.17
  • Linux Linux Kernel 2.6.16.18
  • Linux Linux Kernel 2.6.16.19
  • Linux Linux Kernel 2.6.16.2
  • Linux Linux Kernel 2.6.16.20
  • Linux Linux Kernel 2.6.16.21
  • Linux Linux Kernel 2.6.16.22
  • Linux Linux Kernel 2.6.16.23
  • Linux Linux Kernel 2.6.16.24
  • Linux Linux Kernel 2.6.16.25
  • Linux Linux Kernel 2.6.16.26
  • Linux Linux Kernel 2.6.16.27
  • Linux Linux Kernel 2.6.16.28
  • Linux Linux Kernel 2.6.16.29
  • Linux Linux Kernel 2.6.16.3
  • Linux Linux Kernel 2.6.16.30
  • Linux Linux Kernel 2.6.16.31
  • Linux Linux Kernel 2.6.16.32
  • Linux Linux Kernel 2.6.16.33
  • Linux Linux Kernel 2.6.16.34
  • Linux Linux Kernel 2.6.16.35
  • Linux Linux Kernel 2.6.16.36
  • Linux Linux Kernel 2.6.16.37
  • Linux Linux Kernel 2.6.16.38
  • Linux Linux Kernel 2.6.16.39
  • Linux Linux Kernel 2.6.16.4
  • Linux Linux Kernel 2.6.16.40
  • Linux Linux Kernel 2.6.16.41
  • Linux Linux Kernel 2.6.16.43
  • Linux Linux Kernel 2.6.16.44
  • Linux Linux Kernel 2.6.16.45
  • Linux Linux Kernel 2.6.16.46
  • Linux Linux Kernel 2.6.16.47
  • Linux Linux Kernel 2.6.16.48
  • Linux Linux Kernel 2.6.16.49
  • Linux Linux Kernel 2.6.16.5
  • Linux Linux Kernel 2.6.16.50
  • Linux Linux Kernel 2.6.16.51
  • Linux Linux Kernel 2.6.16.52
  • Linux Linux Kernel 2.6.16.53
  • Linux Linux Kernel 2.6.16.6
  • Linux Linux Kernel 2.6.16.7
  • Linux Linux Kernel 2.6.16.8
  • Linux Linux Kernel 2.6.16.9
  • Linux Linux Kernel 2.6.17
  • Linux Linux Kernel 2.6.17.1
  • Linux Linux Kernel 2.6.17.10
  • Linux Linux Kernel 2.6.17.11
  • Linux Linux Kernel 2.6.17.12
  • Linux Linux Kernel 2.6.17.13
  • Linux Linux Kernel 2.6.17.14
  • Linux Linux Kernel 2.6.17.2
  • Linux Linux Kernel 2.6.17.3
  • Linux Linux Kernel 2.6.17.4
  • Linux Linux Kernel 2.6.17.5
  • Linux Linux Kernel 2.6.17.6
  • Linux Linux Kernel 2.6.17.7
  • Linux Linux Kernel 2.6.17.8
  • Linux Linux Kernel 2.6.17.9
  • Linux Linux Kernel 2.6.18 rc4
  • Linux Linux Kernel 2.6.18
  • Linux Linux Kernel 2.6.18 rc7
  • Linux Linux Kernel 2.6.18 rc6
  • Linux Linux Kernel 2.6.18 rc5
  • Linux Linux Kernel 2.6.18 rc3
  • Linux Linux Kernel 2.6.18 rc2
  • Linux Linux Kernel 2.6.18 rc1
  • Linux Linux Kernel 2.6.18.1
  • Linux Linux Kernel 2.6.18.2
  • Linux Linux Kernel 2.6.18.3
  • Linux Linux Kernel 2.6.18.4
  • Linux Linux Kernel 2.6.18.5
  • Linux Linux Kernel 2.6.18.6
  • Linux Linux Kernel 2.6.18.7
  • Linux Linux Kernel 2.6.18.8
  • Linux Linux Kernel 2.6.2
  • Novell Linux Desktop 9
  • Novell Linux POS 9
  • Novell Open Enterprise Server
  • Novell Open Enterprise Server
  • RedHat Enterprise Linux 3 Desktop
  • RedHat Enterprise Linux 3 WS
  • RedHat Enterprise Linux 3 ES
  • RedHat Enterprise Linux 3 AS
  • RedHat Enterprise Linux 4 Desktop
  • RedHat Enterprise Linux 4 WS
  • RedHat Enterprise Linux 4 ES
  • RedHat Enterprise Linux 4 AS
  • SuSE Linux Enterprise Server 9
  • SuSE SuSE SLED 10
  • SuSE SuSE SLES 10
  • SuSE SuSE SLES 9

Reported:

Oct 04, 2006

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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