kernel is vulnerable to denial of service (DoS). A vulnerability was found in Linux kernel’s, versions up to 3.10, implementation of overlayfs. An attacker with local access can create a denial of service situation via NULL pointer dereference in ovl_posix_acl_create function in fs/overlayfs/dir.c. This can allow attackers with ability to create directories on overlayfs to crash the kernel creating a denial of service (DOS). A vulnerability was found in Linux kernel’s implementation of overlayfs. An attacker with local access can create a denial of service situation via NULL pointer dereference in ovl_posix_acl_create function in fs/overlayfs/dir.c.
access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/7.7_release_notes/index
access.redhat.com/errata/RHSA-2019:2043
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=1677778
bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10140
security.netapp.com/advisory/ntap-20190905-0002/