CVE Catalog

CVE-2017-7979

High
Published: Translated: NVD NIST

Summary

The cookie feature in the packet action API in the Linux kernel 4.11.x through 4.11-rc7 mishandles the tb nlattr array, allowing local users to cause a denial of service through uninitialized memory access and refcount underflow, potentially leading to system hang or crash.

Risk Assessment

This vulnerability may lead to significant disruptions in system operation, affecting the availability of services within the organization.

Recommendation

It is recommended to update the kernel to a version that is not vulnerable to this flaw to minimize the risk of denial of service.

Related vulnerabilities

Original NVD description (English source)

The cookie feature in the packet action API implementation in net/sched/act_api.c in the Linux kernel 4.11.x through 4.11-rc7 mishandles the tb nlattr array, which allows local users to cause a denial of service (uninitialized memory access and refcount underflow, and system hang or crash) or possibly have unspecified other impact via "tc filter add" commands in certain contexts. NOTE: this does not affect stable kernels, such as 4.10.x, from kernel.org.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS