Astra Linux – Vulnerability found in Linux 6.1, Linux 5.10, and Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: tee: Fix NULL pointer dereference in teeshmput teeshmput has a NULL pointer dereference: opteedisableshmcache shm = regpairtoptr...; // shm may return NULL teeshmfreeshm; teeshmputshm; // results in a crash Add a check in...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: tee: added a overflow check in registershmhelper When special lengths are provided by the user space, registershmhelper may cause an integer overflow when calculating the number of pages covered by a given user space memory regio...

Linux Distros Unpatched Vulnerability : CVE-2026-53210

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tee: shm: fix shm leak in registershmhelper registershmhelper allocates shm before calling ioviternpages. If ioviternpages returns 0, the function jumps to...

EUVD-2026-39301

In the Linux kernel, the following vulnerability has been resolved: tee: shm: fix shm leak in registershmhelper registershmhelper allocates shm before calling ioviternpages. If ioviternpages returns 0, the function jumps to errctxput and leaks shm. This can be triggered by TEEIOCSHMREGISTER with...

CVE-2026-53210

The CVE-2026-53210 issue is in the Linux kernel’s Trusted Execution Environment (TEE) subsystem. A shm leak occurs in register_shm_helper() when TEE_IOC_SHM_REGISTER registers a zero-length shared memory, because shm is allocated before iov_iter_npages() and not freed if it returns 0; the code pa...

PT-2026-52305

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description A memory leak occurs in the register shm helper function. The function allocates shared memory shm before calling iov iter npages. If iov iter npages returns 0, the function incorrectly...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-992851)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992851 advisory. In the Linux kernel, the following vulnerability has been resolved: tee: add overflow check in registershmhelper With special lengths supplied by user space,...

The vulnerability of the tee_shm_put() function in the Linux operating system, which allows a hacker to cause a service failure

The vulnerability of the teeshmput function in the Linux operating system is related to pointer manipulation. Exploiting this vulnerability can allow a remote attacker to cause a service failure...

Unity Linux 20.1070e Security Update: kernel (UTSA-2025-414520)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-414520 advisory. A use-after-free exists in drivers/tee/teeshm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in teeshmgetfromid...

DEBIAN-CVE-2025-39865

In the Linux kernel, the following vulnerability has been resolved: tee: fix NULL pointer dereference in teeshmput teeshmput have NULL pointer dereference: opteedisableshmcache -- shm = regpairtoptr...;//shm maybe return NULL teeshmfreeshm; -- teeshmputshm;//crash Add check in teeshmput to fix it...

CVE-2025-39865

In the Linux kernel, the following vulnerability has been resolved: tee: fix NULL pointer dereference in teeshmput teeshmput have NULL pointer dereference: opteedisableshmcache -- shm = regpairtoptr...;//shm maybe return NULL teeshmfreeshm; -- teeshmputshm;//crash Add check in teeshmput to fix it...

UBUNTU-CVE-2025-39865

In the Linux kernel, the following vulnerability has been resolved: tee: fix NULL pointer dereference in teeshmput teeshmput have NULL pointer dereference: opteedisableshmcache -- shm = regpairtoptr...;//shm maybe return NULL teeshmfreeshm; -- teeshmputshm;//crash Add check in teeshmput to fix it...

CVE-2025-39865 tee: fix NULL pointer dereference in tee_shm_put

In the Linux kernel, the following vulnerability has been resolved: tee: fix NULL pointer dereference in teeshmput teeshmput have NULL pointer dereference: opteedisableshmcache -- shm = regpairtoptr...;//shm maybe return NULL teeshmfreeshm; -- teeshmputshm;//crash Add check in teeshmput to fix it...

CVE-2025-39865

CVE-2025-39865 affects the Linux kernel tee subsystem. The issue is a potential NULL pointer dereference in tee_shm_put when reg_pair_to_ptr may return NULL, leading to a crash in shutdown flow (optee/shm cache path). The documented fix is to add a NULL check in tee_shm_put to prevent dereferenci...

CVE-2025-39865

In the Linux kernel, the following vulnerability has been resolved: tee: fix NULL pointer dereference in teeshmput teeshmput have NULL pointer dereference: opteedisableshmcache -- shm = regpairtoptr...;//shm maybe return NULL teeshmfreeshm; -- teeshmputshm;//crash Add check in teeshmput to fix it...

Linux Distros Unpatched Vulnerability : CVE-2025-39865

"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - tee: fix NULL pointer dereference in teeshmput teeshmput have NULL pointer dereference: opteedisableshmcache -- shm = regpairtoptr... %NASLMINLEVEL 80900 C...

SUSE CVE-2021-44733

A use-after-free exists in drivers/tee/teeshm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in teeshmgetfromid during an attempt to free a shared memory object...

A use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object.

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AZL-7063 CVE-2021-44733 affecting package kernel for versions less than 5.15.18.1-1

A use-after-free exists in drivers/tee/teeshm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in teeshmgetfromid during an attempt to free a shared memory object...

DEBIAN-CVE-2021-44733

A use-after-free exists in drivers/tee/teeshm.c in the TEE subsystem in the Linux kernel through 5.15.11. This occurs because of a race condition in teeshmgetfromid during an attempt to free a shared memory object...