Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-001124)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-001124 advisory. In 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,...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002732)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-002732 advisory. In 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,...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-003160)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-003160 advisory. In 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,...

kernel: NULL pointer dereference if close and fchownat system calls share a socket file descriptor

A NULL pointer dereference issue was found in the Linux kernel. If the close and fchownat system calls share a socket file descriptor as an argument, then the two calls can race and trigger a NULL pointer dereference leading to a system crash and a denial of service...

systemd - chown_one() Dereference Symlinks

systemd - chownone Dereference Symlinks I am sending this bug report to Ubuntu, even though it's an upstream bug, as requested at https://github.com/systemd/systemd/blob/master/docs/CONTRIBUTING.mdsecurity-vulnerability-reports . When chownone in the recursive chown logic decides that it has to...

Linux systemd Symlink Dereference Via chown_one() Exploit

Linux suffers from an issue with systemd where chownone can dereference symlinks. systemd: chownone can dereference symlinks CVE-2018-15687 I am sending this bug report to Ubuntu, even though it's an upstream bug, as requested at...

Amazon Linux AMI : kernel (ALAS-2018-1044)

A NULL pointer dereference issue was found in the Linux kernel. If the close and fchownat system calls share a socket file descriptor as an argument, then the two calls can race and trigger a NULL pointer dereference leading to a system crash and a denial of service.CVE-2018-12232 C Tenable Netwo...

CVE-2018-12232

A NULL pointer dereference issue was found in the Linux kernel. If the close and fchownat system calls share a socket file descriptor as an argument, then the two calls can race and trigger a NULL pointer dereference leading to a system crash and a denial of service...

DEBIAN-CVE-2018-12232

In 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 sockclose and sockfssetattr functions. fchownat does not increment the file descriptor reference count, which allows...

CVE-2018-12232

In 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 sockclose and sockfssetattr functions. fchownat does not increment the file descriptor reference count, which allows...

CVE-2018-12232

CVE-2018-12232: In the Linux kernel up to 4.17.1, there is a race between fchownat and close when targeting the same socket file descriptor. fchownat does not increment the file descriptor reference count, allowing close to set the socket to NULL during fchownat’s execution, causing a NULL pointe...

CVE-2018-12232

In 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 sockclose and sockfssetattr functions. fchownat does not increment the file descriptor reference count, which allows...

PT-2018-11063

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.17.1 Description A race condition exists between the fchownat and close functions when they target the same socket file descriptor. This issue is related to the sock close and sockfs setattr functions. The...

CVE-2018-12232: Concurrent Execution using Shared Resource with Improper Synchronization

In 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 sockclose and sockfssetattr functions. fchownat does not increment the file descriptor reference count, which allows...

UBUNTU-CVE-2018-12232

In 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 sockclose and sockfssetattr functions. fchownat does not increment the file descriptor reference count, which allows...