Linux core has permission expansion and memory access Vulnerabilities

Linux core has permission expansion and memory access vulnerabilities-general Linux technology-Linux programming and kernel information. For more information, see the following. Description: These two vulnerabilities that occur in Linux cannot correctly confirm the user's metric value, resulting in a memory access vulnerability. Hackers can exploit the vulnerability to read or write data into the memory area.

Security Research Institute Securityfocus published multiple Linux core vulnerabilities last week, including one regional permission expansion and two memory access vulnerabilities that affect Linux core versions earlier than 2.6.24.1, more likely include Red Hat and Ubuntu products.

The memory access vulnerabilities in the two regions are "vmsplice_to_user ()" and "copy_from_user_mmap_sem ()", both of which cannot correctly confirm the user indicator value, resulting in a memory access vulnerability, hackers can exploit this vulnerability to read or write data into the memory area.

These two memory access vulnerabilities that affect Linux core can still affect Turbolinux Server and RedHat Fedora, which affects Debian Linux.

Another vulnerability, "vmsplice_to_pipe ()", is a region-wide vulnerability that allows hackers to gain the superuser permissions of compromised computers. In addition to the Red Hat and Turbolinux Server, the affected Linux systems also expand to Ubuntu Linux, Slackware Linux, and openSUSE.

Although the security industry Secunia classified this extended permission vulnerability as a low-risk level, both RedHat and Ubuntu have fixed the extended permission vulnerability in a short time.