CVE-2011-2695

Public Exploit

Description

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.

Category

4.9
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.07%
Third-Party Advisory secunia.com Third-Party Advisory openwall.com Third-Party Advisory openwall.com Third-Party Advisory spinics.net Third-Party Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2011/07/15/8 third party advisory mailing list
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=f17722f917b2f21497deb6edc62fb1683daa08e6
https://bugzilla.redhat.com/show_bug.cgi?id=722557 issue tracking third party advisory patch
http://www.spinics.net/lists/linux-ext4/msg25697.html mailing list exploit third party advisory patch
http://www.openwall.com/lists/oss-security/2011/07/15/7 third party advisory mailing list
http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc5 broken link
http://secunia.com/advisories/45193 third party advisory

Frequently Asked Questions

What is the severity of CVE-2011-2695?
CVE-2011-2695 has been scored as a medium severity vulnerability.
How to fix CVE-2011-2695?
To fix CVE-2011-2695, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-2695 being actively exploited in the wild?
It is possible that CVE-2011-2695 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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