CVE-2026-19595

The user-mode syscall verifier zvrfyrtiocqegetmempoolbuffer in subsys/rtio/rtiosyscalls.c validated its two output parameters, buff and bufflen, with KSYSCALLMEMORYREAD rather than KSYSCALLMEMORYWRITE. Both are pure out-parameters: zimplrtiocqegetmempoolbuffer stores the mempool buffer address an...

CVE-2026-19595 Zephyr RTIO syscall verifier validates output parameters for read instead of write access

The user-mode syscall verifier zvrfyrtiocqegetmempoolbuffer in subsys/rtio/rtiosyscalls.c validated its two output parameters, buff and bufflen, with KSYSCALLMEMORYREAD rather than KSYSCALLMEMORYWRITE. Both are pure out-parameters: zimplrtiocqegetmempoolbuffer stores the mempool buffer address an...

CVE-2026-19595 Zephyr RTIO syscall verifier validates output parameters for read instead of write access

The user-mode syscall verifier zvrfyrtiocqegetmempoolbuffer in subsys/rtio/rtiosyscalls.c validated its two output parameters, buff and bufflen, with KSYSCALLMEMORYREAD rather than KSYSCALLMEMORYWRITE. Both are pure out-parameters: zimplrtiocqegetmempoolbuffer stores the mempool buffer address an...

CVE-2026-19595

The Zephyr RTOS contains a vulnerability in the RTIO syscall verifier located in subsys/rtio/rtio_syscalls.c. The function z_vrfy_rtio_cqe_get_mempool_buffer() incorrectly validates the output parameters buff and buff_len using K_SYSCALL_MEMORY_READ() instead of K_SYSCALL_MEMORY_WRITE(). Because ...

PT-2026-117695

Name of the Vulnerable Software and Affected Versions Zephyr OS affected versions not specified Description An issue exists in the user-mode syscall verifier z vrfy rtio cqe get mempool buffer within subsys/rtio/rtio syscalls.c. The verifier incorrectly uses K SYSCALL MEMORY READ instead of K...

CVE-2026-71490 OPNsense: Direct comma-separated user privileges bypass OPNsense MVC read-only write protection

OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.11, OPNsense\Core\ACL::hasPrivilege appends a directly assigned comma-separated value as one string and then uses an exact comparison when checking user-config-readonly. A user directly assigned both a component write...

CVE-2026-71490

In versions of OPNsense prior to 26.1.11 , a flaw in OPNsense\Core\ACL::hasPrivilege() allows users to bypass MVC read-only write protection . The root cause is that directly assigned comma-separated values are appended as a single string and evaluated using an exact comparison when checking use...

CVE-2026-82358

RT-Labs AB C-Open CANopen contains a write protection bypass in the SDO Service Data Object server implementation 'src/cosdoserver.c' that fails to properly validate write permissions when processing download-segment frames. An unauthenticated attacker on the CAN bus can initiate an SDO upload fo...

EUVD-2026-91024

RT-Labs AB C-Open CANopen contains a write protection bypass in the SDO Service Data Object server implementation 'src/cosdoserver.c' that fails to properly validate write permissions when processing download-segment frames. An unauthenticated attacker on the CAN bus can initiate an SDO upload fo...

CVE-2026-82358

RT-Labs AB C-Open CANopen contains a write protection bypass in the SDO server implementation (src/co_sdo_server.c ). The vulnerability occurs because the system fails to properly validate write permissions when processing download-segment frames . An unauthenticated attacker on the CAN bus can i...

CVE-2026-82358 RT-Labs AB C-Open CANopen SDO Server Write Protection Bypass

RT-Labs AB C-Open CANopen contains a write protection bypass in the SDO Service Data Object server implementation 'src/cosdoserver.c' that fails to properly validate write permissions when processing download-segment frames. An unauthenticated attacker on the CAN bus can initiate an SDO upload fo...

CVE-2026-82358 RT-Labs AB C-Open CANopen SDO Server Write Protection Bypass

RT-Labs AB C-Open CANopen contains a write protection bypass in the SDO Service Data Object server implementation 'src/cosdoserver.c' that fails to properly validate write permissions when processing download-segment frames. An unauthenticated attacker on the CAN bus can initiate an SDO upload fo...

CVE-2026-82358 RT-Labs AB C-Open CANopen SDO Server Write Protection Bypass

RT-Labs AB C-Open CANopen contains a write protection bypass in the SDO Service Data Object server implementation 'src/cosdoserver.c' that fails to properly validate write permissions when processing download-segment frames. An unauthenticated attacker on the CAN bus can initiate an SDO upload fo...

C-Open CANopen stack multiple vulnerabilities

RISK EVALUATION RT-Labs AB C-Open CANopen contains a NULL pointer dereference and a write protection bypass vulnerability. These vulnerabilities can potentially crash the device or allow any CANopen node to overwrite read-only OD entries using two SDO frames. 2. RECOMMENDED PRACTICES Fixed in...

CVE-2026-82358: Incorrect Authorization

RT-Labs AB C-Open CANopen contains a write protection bypass in the SDO Service Data Object server implementation 'src/cosdoserver.c' that fails to properly validate write permissions when processing download-segment frames. An unauthenticated attacker on the CAN bus can initiate an SDO upload fo...

PT-2026-103996

Name of the Vulnerable Software and Affected Versions RT-Labs AB C-Open CANopen versions prior to 1.1.1 Description A write protection bypass exists in the SDO Service Data Object server implementation within src/co sdo server.c. The issue occurs because the system fails to properly validate writ...

PT-2026-98559

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description An issue exists in the io uring/rw component where write accounting was incorrectly moved from the kiocb completion handler to the io req rw complete task work. This deferral creates a...

CVE-2026-89772

A flaw was found in the Btrfs filesystem of the Linux kernel. This vulnerability allows a local attacker with write access to a memory-mapped file to modify data while it is being written to disk. This can lead to data corruption, where the integrity of the stored information is compromised, or...

DEBIAN-CVE-2026-89772

In the Linux kernel, the following vulnerability has been resolved: btrfs: write-protect folios during data writeback commit 095be159f3eb "btrfs: unify folio dirty flag clearing" replaced the foliocleardirtyforio call in extentwritecachepages with a plain foliotestdirty check. Besides clearing th...

CVE-2026-89772

In the Linux kernel, the following vulnerability has been resolved: btrfs: write-protect folios during data writeback commit 095be159f3eb "btrfs: unify folio dirty flag clearing" replaced the foliocleardirtyforio call in extentwritecachepages with a plain foliotestdirty check. Besides clearing th...