Vulnerability Monitor

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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.

Security Impact Summary

CVE-2011-2695 is a security vulnerability that . Impacting 1 product from linux organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2011-07-28T22:55:02.657

Last Modified

2026-04-29T01:13:23.040

Status

Modified

Source

[email protected]

Severity

CVSSv2: 4.9 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:N/I:N/A:C

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

6.9

Weaknesses

Type: Primary
CWE-193

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 3.0	Yes
Operating System	linux	linux_kernel	3.0	Yes
Operating System	linux	linux_kernel	3.0	Yes
Operating System	linux	linux_kernel	3.0	Yes
Operating System	linux	linux_kernel	3.0	Yes
Operating System	linux	linux_kernel	3.0	Yes

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f17722f917b2f21497deb6edc62fb1683daa08e6 ([email protected])
http://secunia.com/advisories/45193 Third Party Advisory ([email protected])
http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc5 Broken Link ([email protected])
http://www.openwall.com/lists/oss-security/2011/07/15/7 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2011/07/15/8 Mailing List, Third Party Advisory ([email protected])
http://www.spinics.net/lists/linux-ext4/msg25697.html Exploit, Patch, Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=722557 Issue Tracking, Patch, Third Party Advisory ([email protected])
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f17722f917b2f21497deb6edc62fb1683daa08e6 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/45193 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc5 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2011/07/15/7 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2011/07/15/8 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.spinics.net/lists/linux-ext4/msg25697.html Exploit, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=722557 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.