High severity8.1NVD Advisory· Published Oct 22, 2018· Updated Jun 17, 2026
CVE-2018-18559
CVE-2018-18559
Description
In the Linux kernel through 4.19, a use-after-free can occur due to a race condition between fanout_add from setsockopt and bind on an AF_PACKET socket. This issue exists because of the 15fe076edea787807a7cdc168df832544b58eba6 incomplete fix for a race condition. The code mishandles a certain multithreaded case involving a packet_do_bind unregister action followed by a packet_notifier register action. Later, packet_release operates on only one of the two applicable linked lists. The attacker can achieve Program Counter control.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
11- Range: <=4.19
- cpe:2.3:a:redhat:openshift_container_platform:3.11:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
9- blogs.securiteam.com/index.php/archives/3731nvdExploitPatchThird Party Advisory
- access.redhat.com/errata/RHBA-2019:0327nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2019:0163nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2019:0188nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2019:1170nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2019:1190nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2019:3967nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2019:4159nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2020:0174nvdThird Party Advisory
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