Race Condition Affecting kernel package, versions <0:3.10.0-693.5.2.el7
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Test your applications- Snyk ID SNYK-RHEL7-KERNEL-4761559
- published 26 Jul 2021
- disclosed 10 Aug 2017
Introduced: 10 Aug 2017
CVE-2017-1000111 Open this link in a new tabHow to fix?
Upgrade RHEL:7 kernel to version 0:3.10.0-693.5.2.el7 or higher.
This issue was patched in RHSA-2017:2930.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
Linux kernel: heap out-of-bounds in AF_PACKET sockets. This new issue is analogous to previously disclosed CVE-2016-8655. In both cases, a socket option that changes socket state may race with safety checks in packet_set_ring. Previously with PACKET_VERSION. This time with PACKET_RESERVE. The solution is similar: lock the socket for the update. This issue may be exploitable, we did not investigate further. As this issue affects PF_PACKET sockets, it requires CAP_NET_RAW in the process namespace. But note that with user namespaces enabled, any process can create a namespace in which it has CAP_NET_RAW.