Vulnerability Description
The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel before 3.1-rc3 does not validate the length attribute of long symlinks, which allows local users to cause a denial of service (incorrect pointer dereference and OOPS) by accessing a long symlink on a malformed Be filesystem.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 3.1 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://securityreason.com/securityalert/8360ExploitThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.1-rc3Broken Link
- http://www.openwall.com/lists/oss-security/2011/08/19/1ExploitMailing ListPatch
- http://www.openwall.com/lists/oss-security/2011/08/19/5ExploitMailing ListPatch
- http://www.pre-cert.de/advisories/PRE-SA-2011-06.txtExploitThird Party Advisory
- http://www.securityfocus.com/archive/1/519387/100/0/threadedExploitThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/49256Third Party AdvisoryVDB Entry
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69343Third Party AdvisoryVDB Entry
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://securityreason.com/securityalert/8360ExploitThird Party Advisory
- http://www.kernel.org/pub/linux/kernel/v3.0/testing/ChangeLog-3.1-rc3Broken Link
- http://www.openwall.com/lists/oss-security/2011/08/19/1ExploitMailing ListPatch
- http://www.openwall.com/lists/oss-security/2011/08/19/5ExploitMailing ListPatch
- http://www.pre-cert.de/advisories/PRE-SA-2011-06.txtExploitThird Party Advisory
FAQ
What is CVE-2011-2928?
CVE-2011-2928 is a vulnerability with a CVSS score of 4.9 (MEDIUM). The befs_follow_link function in fs/befs/linuxvfs.c in the Linux kernel before 3.1-rc3 does not validate the length attribute of long symlinks, which allows local users to cause a denial of service (i...
How severe is CVE-2011-2928?
CVE-2011-2928 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-2011-2928?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.