An issue was discovered in the Linux kernel through 4.17.3. An Integer Overflow in kernel/time/posix-timers.c in the POSIX timer code is caused by the way the overrun accounting works. Depending on interval and expiry time values, the overrun can be larger than INT_MAX, but the accounting is int based. This basically makes the accounting values, which are visible to user space via timer_getoverrun(2) and siginfo::si_overrun, random. For example, a local user can cause a denial of service (signed integer overflow) via crafted mmap, futex, timer_create, and timer_settime system calls.
The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.
Name | Vendor | Start Version | End Version |
---|---|---|---|
Linux_kernel | Linux | * | 4.17.3 (including) |
Linux | Ubuntu | artful | * |
Linux | Ubuntu | bionic | * |
Linux | Ubuntu | precise/esm | * |
Linux | Ubuntu | trusty | * |
Linux | Ubuntu | upstream | * |
Linux | Ubuntu | xenial | * |
Linux-aws | Ubuntu | bionic | * |
Linux-aws | Ubuntu | trusty | * |
Linux-aws | Ubuntu | upstream | * |
Linux-aws | Ubuntu | xenial | * |
Linux-aws-hwe | Ubuntu | upstream | * |
Linux-aws-hwe | Ubuntu | xenial | * |
Linux-azure | Ubuntu | bionic | * |
Linux-azure | Ubuntu | trusty | * |
Linux-azure | Ubuntu | upstream | * |
Linux-azure | Ubuntu | xenial | * |
Linux-azure-edge | Ubuntu | upstream | * |
Linux-azure-edge | Ubuntu | xenial | * |
Linux-euclid | Ubuntu | esm-apps/xenial | * |
Linux-euclid | Ubuntu | upstream | * |
Linux-euclid | Ubuntu | xenial | * |
Linux-flo | Ubuntu | esm-apps/xenial | * |
Linux-flo | Ubuntu | trusty | * |
Linux-flo | Ubuntu | upstream | * |
Linux-flo | Ubuntu | xenial | * |
Linux-gcp | Ubuntu | bionic | * |
Linux-gcp | Ubuntu | upstream | * |
Linux-gcp | Ubuntu | xenial | * |
Linux-gcp-edge | Ubuntu | upstream | * |
Linux-gke | Ubuntu | upstream | * |
Linux-gke | Ubuntu | xenial | * |
Linux-goldfish | Ubuntu | esm-apps/xenial | * |
Linux-goldfish | Ubuntu | trusty | * |
Linux-goldfish | Ubuntu | upstream | * |
Linux-goldfish | Ubuntu | xenial | * |
Linux-grouper | Ubuntu | trusty | * |
Linux-grouper | Ubuntu | upstream | * |
Linux-hwe | Ubuntu | upstream | * |
Linux-hwe | Ubuntu | xenial | * |
Linux-hwe-edge | Ubuntu | upstream | * |
Linux-hwe-edge | Ubuntu | xenial | * |
Linux-kvm | Ubuntu | bionic | * |
Linux-kvm | Ubuntu | upstream | * |
Linux-kvm | Ubuntu | xenial | * |
Linux-lts-trusty | Ubuntu | upstream | * |
Linux-lts-utopic | Ubuntu | trusty | * |
Linux-lts-utopic | Ubuntu | upstream | * |
Linux-lts-vivid | Ubuntu | trusty | * |
Linux-lts-vivid | Ubuntu | upstream | * |
Linux-lts-wily | Ubuntu | trusty | * |
Linux-lts-wily | Ubuntu | upstream | * |
Linux-lts-xenial | Ubuntu | trusty | * |
Linux-lts-xenial | Ubuntu | upstream | * |
Linux-maguro | Ubuntu | trusty | * |
Linux-maguro | Ubuntu | upstream | * |
Linux-mako | Ubuntu | esm-apps/xenial | * |
Linux-mako | Ubuntu | trusty | * |
Linux-mako | Ubuntu | upstream | * |
Linux-mako | Ubuntu | xenial | * |
Linux-manta | Ubuntu | trusty | * |
Linux-manta | Ubuntu | upstream | * |
Linux-oem | Ubuntu | bionic | * |
Linux-oem | Ubuntu | cosmic | * |
Linux-oem | Ubuntu | upstream | * |
Linux-oem | Ubuntu | xenial | * |
Linux-oracle | Ubuntu | upstream | * |
Linux-raspi2 | Ubuntu | artful | * |
Linux-raspi2 | Ubuntu | bionic | * |
Linux-raspi2 | Ubuntu | upstream | * |
Linux-raspi2 | Ubuntu | xenial | * |
Linux-snapdragon | Ubuntu | artful | * |
Linux-snapdragon | Ubuntu | upstream | * |
Linux-snapdragon | Ubuntu | xenial | * |