fs/fcntl.c in the aufs 3.2.x+setfl-debian patch in the linux-image package 3.2.0-4 (kernel 3.2.81-1) in Debian wheezy mishandles F_SETFL fcntl calls on directories, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via standard filesystem operations, as demonstrated by scp from an AUFS filesystem.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Debian_linux | Debian | 7.0 (including) | 7.0 (including) |
| Linux-flo | Ubuntu | esm-apps/xenial | * |
| Linux-flo | Ubuntu | trusty | * |
| Linux-flo | Ubuntu | vivid/stable-phone-overlay | * |
| Linux-flo | Ubuntu | xenial | * |
| Linux-flo | Ubuntu | yakkety | * |
| Linux-goldfish | Ubuntu | esm-apps/xenial | * |
| Linux-goldfish | Ubuntu | trusty | * |
| Linux-goldfish | Ubuntu | xenial | * |
| Linux-goldfish | Ubuntu | yakkety | * |
| Linux-goldfish | Ubuntu | zesty | * |
| Linux-grouper | Ubuntu | trusty | * |
| Linux-linaro-omap | Ubuntu | precise | * |
| Linux-linaro-shared | Ubuntu | precise | * |
| Linux-linaro-vexpress | Ubuntu | precise | * |
| Linux-lts-quantal | Ubuntu | precise | * |
| Linux-lts-quantal | Ubuntu | precise/esm | * |
| Linux-lts-raring | Ubuntu | precise | * |
| Linux-lts-raring | Ubuntu | precise/esm | * |
| Linux-lts-saucy | Ubuntu | precise | * |
| Linux-lts-saucy | Ubuntu | precise/esm | * |
| Linux-lts-utopic | Ubuntu | trusty | * |
| Linux-lts-wily | Ubuntu | trusty | * |
| Linux-maguro | Ubuntu | trusty | * |
| Linux-mako | Ubuntu | esm-apps/xenial | * |
| Linux-mako | Ubuntu | trusty | * |
| Linux-mako | Ubuntu | vivid/stable-phone-overlay | * |
| Linux-mako | Ubuntu | xenial | * |
| Linux-mako | Ubuntu | yakkety | * |
| Linux-manta | Ubuntu | trusty | * |
| Linux-qcm-msm | Ubuntu | precise | * |