USN-2635-1: Linux kernel (Utopic HWE) vulnerabilities
Description
The ping_unhash function in net/ipv4/ping.c in the Linux kernel before 4.0.3 does not initialize a certain list data structure during an unhash operation, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) by leveraging the ability to make a SOCK_DGRAM socket system call for the IPPROTO_ICMP or IPPROTO_ICMPV6 protocol, and then making a connect system call after a disconnect.
Solution(s)
- ubuntu-upgrade-linux-image-3-16-0-39-generic
- ubuntu-upgrade-linux-image-3-16-0-39-generic-lpae
- ubuntu-upgrade-linux-image-3-16-0-39-lowlatency
- ubuntu-upgrade-linux-image-3-16-0-39-powerpc-e500mc
- ubuntu-upgrade-linux-image-3-16-0-39-powerpc-smp
- ubuntu-upgrade-linux-image-3-16-0-39-powerpc64-emb
- ubuntu-upgrade-linux-image-3-16-0-39-powerpc64-smp
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