Vulnerability in Linux Kernel
CVE-2011-4110
The user_update function in security/keys/user_defined.c in the Linux kernel 2.6 allows local users to cause a denial of service (NULL pointer dereference and kernel oops) via vectors related to a user-defined key and "updating a negative key into a fully instantiated key."
Published · last modified .
CVSS v2 metric
CVSS v2 base score 2.1 (Low). Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.005 (38.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: -0.000
Affected products
- Linux Kernel — versions 2.6
Weakness classification (CWE)
References
- lkml.org/lkml/2011/11/15/363 (mailing-list, Exploit)
- www.securityfocus.com/bid/50755 (vdb-entry)
- www.ubuntu.com/usn/USN-1328-1 (vendor-advisory)
- www.ubuntu.com/usn/USN-1344-1 (vendor-advisory)
- www.openwall.com/lists/oss-security/2011/11/22/5 (mailing-list)
- www.openwall.com/lists/oss-security/2011/11/21/19 (mailing-list)
- www.ubuntu.com/usn/USN-1324-1 (vendor-advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch)
- secunia.com/advisories/47754 (third-party-advisory)
- www.openwall.com/lists/oss-security/2011/11/22/6 (mailing-list)