Vulnerability Description
The qdisc_notify function in net/sched/sch_api.c in the Linux kernel before 2.6.35 does not prevent tc_fill_qdisc function calls referencing builtin (aka CQ_F_BUILTIN) Qdisc structures, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact via a crafted call.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 2.6.35 |
| Redhat | Enterprise Linux | 4.0 |
Related Weaknesses (CWE)
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://kerneltrap.org/mailarchive/linux-netdev/2010/5/21/6277805Broken Link
- http://mirror.anl.gov/pub/linux/kernel/v2.6/ChangeLog-2.6.35Broken Link
- http://openwall.com/lists/oss-security/2011/07/12/1Mailing ListPatchThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2011-1065.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2011-1163.htmlThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=720552Issue TrackingPatchThird Party Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=
- http://kerneltrap.org/mailarchive/linux-netdev/2010/5/21/6277805Broken Link
- http://mirror.anl.gov/pub/linux/kernel/v2.6/ChangeLog-2.6.35Broken Link
- http://openwall.com/lists/oss-security/2011/07/12/1Mailing ListPatchThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2011-1065.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2011-1163.htmlThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=720552Issue TrackingPatchThird Party Advisory
FAQ
What is CVE-2011-2525?
CVE-2011-2525 is a vulnerability with a CVSS score of 7.8 (HIGH). The qdisc_notify function in net/sched/sch_api.c in the Linux kernel before 2.6.35 does not prevent tc_fill_qdisc function calls referencing builtin (aka CQ_F_BUILTIN) Qdisc structures, which allows l...
How severe is CVE-2011-2525?
CVE-2011-2525 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-2525?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Redhat Enterprise Linux.