CVE-2013-7263

CVE-2013-7263 is a Linux kernel vulnerability affecting versions prior to 3.12.4, where uninitialized kernel stack memory can be exposed to local users. This information disclosure occurs due to improper handling of length values before data structure initialization in network-related system calls (recvfrom, recvmmsg, recvmsg) within IPv4 and IPv6 ping, raw, and UDP modules. With a CVSS score of 4.9 (AV:L/AC:L/Au:N/C:C/I:N/A:N), it represents a local attack vector with low complexity, leading to a complete compromise of confidentiality by revealing sensitive kernel memory. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, indicating a low current threat landscape.