DescriptionIn net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash.
Overall state of this security issue: Pending
This issue is currently rated as having moderate severity.
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.
|SUSE Linux Enterprise Desktop 12 SP3||kernel-source||Not affected|
|SUSE Linux Enterprise Module for Basesystem 15 GA||kernel-source||Affected|
|SUSE Linux Enterprise Module for Development Tools 15 GA||kernel-source||Affected|
|SUSE Linux Enterprise Server 11 SP4||kernel-source||Not affected|
|SUSE Linux Enterprise Server 12 SP3||kernel-source||Not affected|