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Vulnerability Details : CVE-2011-2695

Multiple off-by-one errors in the ext4 subsystem in the Linux kernel before 3.0-rc5 allow local users to cause a denial of service (BUG_ON and system crash) by accessing a sparse file in extent format with a write operation involving a block number corresponding to the largest possible 32-bit unsigned integer.
Publish Date : 2011-07-28 Last Update Date : 2020-07-31
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- CVSS Scores & Vulnerability Types

CVSS Score
4.9
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 193

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat important
4.9
AV:L/AC:L/Au:N/C:N/I:N/A:C 2011-07-15 2011-06-03
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2011-2695 oval:org.opensuse.security:def:20112695 unix
DEPRECATED: ELSA-2011-1189 -- kernel security, bug fix, and enhancement update (important) oval:org.mitre.oval:def:28043 unix
DEPRECATED: ELSA-2011-1386 -- kernel security, bug fix, and enhancement update (important) oval:org.mitre.oval:def:28137 unix
ELSA-2011-2025 -- Unbreakable Enterprise kernel security and bug fix update (important) oval:org.mitre.oval:def:28157 unix
ELSA-2011:1189: kernel security, bug fix, and enhancement update (Important) oval:org.mitre.oval:def:23636 unix
ELSA-2011:1386: kernel security, bug fix, and enhancement update (Important) oval:org.mitre.oval:def:23388 unix
RHSA-2011:1189: kernel security, bug fix, and enhancement update (Important) oval:org.mitre.oval:def:22054 unix
RHSA-2011:1189: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20111189 unix
RHSA-2011:1386: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20111386 unix
RHSA-2011:1386: kernel security, bug fix, and enhancement update (Important) oval:org.mitre.oval:def:21885 unix
USN-1228-1 -- linux-ti-omap4 vulnerabilities oval:org.mitre.oval:def:20812 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-2695

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
2 OS Linux Linux Kernel 3.0 RC3 * * Version Details Vulnerabilities
3 OS Linux Linux Kernel 3.0 RC4 * * Version Details Vulnerabilities
4 OS Linux Linux Kernel 3.0 - * * Version Details Vulnerabilities
5 OS Linux Linux Kernel 3.0 RC1 * * Version Details Vulnerabilities
6 OS Linux Linux Kernel 3.0 RC2 * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 6

- References For CVE-2011-2695

http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc5 CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=722557 CONFIRM
http://secunia.com/advisories/45193
SECUNIA 45193
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f17722f917b2f21497deb6edc62fb1683daa08e6 CONFIRM
http://www.openwall.com/lists/oss-security/2011/07/15/8
MLIST [oss-security] 20110715 Re: CVE Request -- kernel: ext4: kernel panic when writing data to the last block of sparse file
http://www.spinics.net/lists/linux-ext4/msg25697.html
MLIST [linux-ext4] 20110603 [PATCH 1/2] ext4: Fix max file size and logical block counting of extent format file
http://www.openwall.com/lists/oss-security/2011/07/15/7
MLIST [oss-security] 20110715 CVE Request -- kernel: ext4: kernel panic when writing data to the last block of sparse file

- Metasploit Modules Related To CVE-2011-2695

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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