Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 3.0 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://secunia.com/advisories/45193Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc5Broken Link
- http://www.openwall.com/lists/oss-security/2011/07/15/7Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2011/07/15/8Mailing ListThird Party Advisory
- http://www.spinics.net/lists/linux-ext4/msg25697.htmlExploitPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=722557Issue TrackingPatchThird Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://secunia.com/advisories/45193Third Party Advisory
- http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.0-rc5Broken Link
- http://www.openwall.com/lists/oss-security/2011/07/15/7Mailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2011/07/15/8Mailing ListThird Party Advisory
- http://www.spinics.net/lists/linux-ext4/msg25697.htmlExploitPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=722557Issue TrackingPatchThird Party Advisory
FAQ
What is CVE-2011-2695?
CVE-2011-2695 is a vulnerability with a CVSS score of 4.9 (MEDIUM). 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...
How severe is CVE-2011-2695?
CVE-2011-2695 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-2695?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.