CVE-2011-2525 Null dereference in n/a
Local attackers can trigger a NULL pointer dereference in the Linux kernel's traffic control subsystem, causing a system crash.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-2525?
CVE-2011-2525 is a high-severity vulnerability in Linux kernel, published on 2 Feb 2012. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-476
Which versions are affected by CVE-2011-2525?
It affects 2 products.
Products include Linux kernel, Redhat Enterprise Linux.
How do I fix CVE-2011-2525?
Apply the vendor's patch.
Is CVE-2011-2525 being exploited?
There is no known exploitation of CVE-2011-2525 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as GHSA-4hrf-7c2r-c5x7.