CVE-2015-5364: High severity linux kernel vulnerability
A flaw was found in the way the Linux kernel's networking implementation handled UDP packets with incorrect checksum values. A remote attacker could potentially use this flaw to trigger an infinite loop in the kernel, resulting in a denial of service on the system, or cause a denial of service in applications using the edge triggered epoll functionality.
Other sources
Linux kernel built with the networking support(CONFIGNET) is vulnerable to an infinite loop issue. It could occur while receiving(recvmsg(2), recvfrom(2)) data over UDP channel, with an incorrect checksum value.
An unprivileged user could use this flaw to cause DoS(CVE-2015-5364) to a remote system via specially crafted UDP packets.
The CVE-2015-5366 issue is also a DoS, but is limited only to the affected application and not the entire system.
Upstream patch: --------------- -> https://git.kernel.org/linus/beb39db59d14990e401e235faf66a6b9b31240b0
Reference: ---------- -> http://seclists.org/oss-sec/2015/q3/10
— Red Hat
The (1) udprecvmsg and (2) udpv6recvmsg functions in the Linux kernel before 4.0.6 do not properly consider yielding a processor, which allows remote attackers to cause a denial of service (system hang) via incorrect checksums within a UDP packet flood.
Affected Software
Remediation
Event History
Parent advisories
This vulnerability appears in the following advisories.
Frequently Asked Questions
What is the severity of CVE-2015-5364?
CVE-2015-5364 is classified as a high severity vulnerability due to its potential to cause denial of service.
How do I fix CVE-2015-5364?
To fix CVE-2015-5364, you should update the Linux kernel to at least version 0:2.6.18-408.el5 or 0:2.6.32-573.3.1.el6 as recommended by your distribution.
What systems are affected by CVE-2015-5364?
CVE-2015-5364 affects multiple versions of the Linux kernel across various distributions including Red Hat and Ubuntu.
What are the potential consequences of CVE-2015-5364?
Exploitation of CVE-2015-5364 may lead to an infinite loop in the kernel, resulting in system instability and denial of service.
Can CVE-2015-5364 be exploited remotely?
Yes, CVE-2015-5364 can be exploited remotely by sending crafted UDP packets with incorrect checksum values.