CVE-2026-58094 TOCTOU race in POSIX shared memory large page configuration

The FIOSSHMLPGCNF ioctl2 operation configures the page size for a largepage shared memory object. This is intended to be used immediately after creating the object, before any memory is allocated for the object. The handler checked whether a page size had already been configured without holding t...

CVE-2026-58094 TOCTOU race in POSIX shared memory large page configuration

The FIOSSHMLPGCNF ioctl2 operation configures the page size for a largepage shared memory object. This is intended to be used immediately after creating the object, before any memory is allocated for the object. The handler checked whether a page size had already been configured without holding t...

CVE-2026-58093

The TIOCSCTTY ioctl handler drops the tty lock in order to acquire the process tree lock. After reacquiring the tty lock, the handler did not revalidate the state of the terminal, and could proceed to link a terminal that was concurrently being destroyed to the calling process' session. An...

CVE-2026-58093 Kernel use-after-free via tty ioctls

The TIOCSCTTY ioctl handler drops the tty lock in order to acquire the process tree lock. After reacquiring the tty lock, the handler did not revalidate the state of the terminal, and could proceed to link a terminal that was concurrently being destroyed to the calling process' session. An...

CVE-2026-58093 Kernel use-after-free via tty ioctls

The TIOCSCTTY ioctl handler drops the tty lock in order to acquire the process tree lock. After reacquiring the tty lock, the handler did not revalidate the state of the terminal, and could proceed to link a terminal that was concurrently being destroyed to the calling process' session. An...

CVE-2026-58093

The FreeBSD kernel contains a use-after-free vulnerability in the tty module's TIOCSCTTY ioctl handler. The issue stems from a race condition where the handler drops the tty lock to acquire the process tree lock but fails to revalidate the terminal's state upon reacquiring the lock. This allows a...

CVE-2026-58091

The implementation of this ioctl attempts to acquire locks on all channels in a sync group. If locking a channel would block, it releases the sync group list lock and sleeps. Upon reawakening, it is possible that the sync group structure is freed, but the implementation did not handle this...

EUVD-2026-66236

The implementation of this ioctl attempts to acquire locks on all channels in a sync group. If locking a channel would block, it releases the sync group list lock and sleeps. Upon reawakening, it is possible that the sync group structure is freed, but the implementation did not handle this...

CVE-2026-58091

The implementation of this ioctl attempts to acquire locks on all channels in a sync group. If locking a channel would block, it releases the sync group list lock and sleeps. Upon reawakening, it is possible that the sync group structure is freed, but the implementation did not handle this...

kernel: i2c: stub: Reject I2C block transfers with invalid length

A flaw was found in the Linux kernel's i2c-stub driver. A local user with access to the /dev/i2c- device can exploit this vulnerability by issuing an I2C System Management Bus SMBus input/output control ioctl command with a specially crafted block transfer length. This invalid length can cause th...

PT-2026-82094

Name of the Vulnerable Software and Affected Versions OpenZFS affected versions not specified Description On Linux, several ioctl authorization checks incorrectly treat capabilities held within a user-created, unprivileged namespace as equivalent to actual host privileges. This allows an...

CVE-2026-79619: Incorrect Authorization

On Linux, several OpenZFS ioctl authorization checks accept a capability held only within a user-created, unprivileged namespace as equivalent to real host privilege, allowing an unprivileged local user to perform operations that should require root. Affected operations include pool-administrativ...

CVE-2026-58093: Concurrent Execution using Shared Resource with Improper Synchronization

The TIOCSCTTY ioctl handler drops the tty lock in order to acquire the process tree lock. After reacquiring the tty lock, the handler did not revalidate the state of the terminal, and could proceed to link a terminal that was concurrently being destroyed to the calling process' session. An...

CVE-2026-58094: Time-of-check Time-of-use (TOCTOU) Race Condition

The FIOSSHMLPGCNF ioctl2 operation configures the page size for a largepage shared memory object. This is intended to be used immediately after creating the object, before any memory is allocated for the object. The handler checked whether a page size had already been configured without holding t...

CVE-2026-58091: Use After Free

The implementation of this ioctl attempts to acquire locks on all channels in a sync group. If locking a channel would block, it releases the sync group list lock and sleeps. Upon reawakening, it is possible that the sync group structure is freed, but the implementation did not handle this...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098701)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098701 advisory. In the Linux kernel, the following vulnerability has been resolved: ata: libata-sff: Ensure that we cannot write outside the allocated buffer reveliofuzzing reported...

Dell Watchdog Timer < 2.0.0.1 Privilege Escalation (DSA-2026-248)

According to its self-reported version, the Dell Watchdog Timer kernel driver WDTKernel.sys on the remote Windows host is prior to 2.0.0.1. It is, therefore, affected by an exposed IOCTL with insufficient access control vulnerability. A low privileged local attacker could potentially exploit this...

Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098930)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-098930 advisory. In the Linux kernel, the following vulnerability has been resolved: crypto: qat - remove unused character device and IOCTLs The QAT driver exposes a character device...

PT-2026-81936

The TIOCSCTTY ioctl handler drops the tty lock in order to acquire the process tree lock. After reacquiring the tty lock, the handler did not revalidate the state of the terminal, and could proceed to link a terminal that was concurrently being destroyed to the calling process' session. An...

VulnCheck KEV: CVE-2026-36425

An issue in OPSWAT AppRemover Driver ardrv.sys v2017.10.02.1551 and earlier in IOCTL handler 0x2420031. Any local user can open the device and send process termination requests without privilege validation...