Oracle Linux: CVE-2019-12381: ELSA-2019-4729: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)
Description
An issue was discovered in ip_ra_control in net/ipv4/ip_sockglue.c in the Linux kernel through 5.1.5. There is an unchecked kmalloc of new_ra, which might allow an attacker to cause a denial of service (NULL pointer dereference and system crash). NOTE: this is disputed because new_ra is never used if it is NULL A flaw was discovered in the Linux kernel that allows an attacker to crash a system under low-memory free conditions in the ipv4 router advertisement code. The attacker must be able to send 'router advertisements' which limits the attack vector to be on the same physical segment.
Solution(s)
- oracle-linux-upgrade-kernel-uek
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