CVEvulnerability

CVE-2015-3636

4.9 MEDIUM Published 2015-08-06 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2015-08-06
Last modified
2026-06-17
Assigner
[email protected]
CVSS 2.0 ([email protected])
4.9 MEDIUM — AV:L/AC:L/Au:N/C:N/I:N/A:C

Description

The ping_unhash function in net/ipv4/ping.c in the Linux kernel before 4.0.3 does not initialize a certain list data structure during an unhash operation, which allows local users to gain privileges or cause a denial of service (use-after-free and system crash) by leveraging the ability to make a SOCK_DGRAM socket system call for the IPPROTO_ICMP or IPPROTO_ICMPV6 protocol, and then making a connect system call after a disconnect.

Affected configurations

• linux linux kernel (<= 4.0.2) • debian debian linux 7.0 • redhat enterprise linux 6.0 • canonical ubuntu linux 12.04

References