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.

Published

2011-07-28T22:55:02.657

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

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)