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

In the Linux kernel, the following vulnerability has been resolved: net: usb: cdc-phonet: A fix was made to prevent overflow of the skbsharedinfo-frags array when processing rxcomplete calls. A malicious USB device that claims to be a CDC Phonet modem can cause an overflow by sending an unbounded...

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

In the Linux kernel, the following vulnerability has been resolved: Input: ims-pcu – fixed the potential infinite loop in CDC union descriptor parsing. The driver parses CDC union descriptors in imspcugetcdcuniondesc, by iterating through the extra descriptor data. However, it does not verify tha...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15, Linux-6.1

In the Linux kernel, the following vulnerability has been resolved: USB: class: cdc-wdm: Fixed the CPU lockup caused by excessive log messages. The syzbot fuzzer found that the interrupt-URB completion callback in the cdc-wdm driver took too long. The driver’s immediate resubmission of interrupts...

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

In the Linux kernel, the following vulnerability has been resolved: Input: ims-pcu – fixed type confusion in CDC union descriptor parsing. The driver currently relies on bMasterInterface0 from the CDC union descriptor without verifying that it matches the interface being probed. This could lead t...

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

In the Linux kernel, the following vulnerability has been resolved: usb: cdc-acm: Check the control transfer buffer size before accessing it. If the first fragment is shorter than struct usbcdcnotification, we cannot calculate the expectedsize. Instead, log an error and discard the notification...

CVE-2026-108952

RT-Thread through 5.3.0 contains a memory corruption vulnerability in the legacy USB CDC virtual COM port driver that aliases rxringbuffer as a Serial V2 rtserialrxfifo in functionenable. A connected USB host configuring the CDC device triggers writes past the ring buffer into struct vcom members...

CVE-2026-108952

RT-Thread versions through 5.3.0 are vulnerable to a memory corruption issue within the legacy USB CDC virtual COM port driver . The root cause is the aliasing of rx_ringbuffer as a Serial V2 rt_serial_rx_fifo inside the _function_enable() function. A connected USB host configuring the CDC device...

CVE-2026-108952 RT-Thread through 5.3.0 Memory Corruption via USB CDC VCOM Driver

RT-Thread through 5.3.0 contains a memory corruption vulnerability in the legacy USB CDC virtual COM port driver that aliases rxringbuffer as a Serial V2 rtserialrxfifo in functionenable. A connected USB host configuring the CDC device triggers writes past the ring buffer into struct vcom members...

CVE-2026-108952 RT-Thread through 5.3.0 Memory Corruption via USB CDC VCOM Driver

RT-Thread through 5.3.0 contains a memory corruption vulnerability in the legacy USB CDC virtual COM port driver that aliases rxringbuffer as a Serial V2 rtserialrxfifo in functionenable. A connected USB host configuring the CDC device triggers writes past the ring buffer into struct vcom members...

EUVD-2026-97359

RT-Thread through 5.3.0 contains a memory corruption vulnerability in the legacy USB CDC virtual COM port driver that aliases rxringbuffer as a Serial V2 rtserialrxfifo in functionenable. A connected USB host configuring the CDC device triggers writes past the ring buffer into struct vcom members...

CVE-2026-108952: Access of Resource Using Incompatible Type

RT-Thread through 5.3.0 contains a memory corruption vulnerability in the legacy USB CDC virtual COM port driver that aliases rxringbuffer as a Serial V2 rtserialrxfifo in functionenable. A connected USB host configuring the CDC device triggers writes past the ring buffer into struct vcom members...

Astra Linux – Vulnerability in Linux

In the Linux kernel, the following vulnerability has been resolved: net: cdceem: Fix for the “fix tx fixupskb leak” issue. When usbnet transmit sends a skb, it is handled in eemtxfixup. If skbcopyexpand fails, it returns NULL. In this case, usbnetstartxmit has no chance to free the original skb...

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

In the Linux kernel, the following vulnerability has been resolved: usb: class: cdc-wdm: Issue with reordering in the read code path has been fixed. Quoting the bug report: Due to compiler optimization or CPU out-of-order execution, the desc-length update may be reordered before the memmove...

Astra Linux – Vulnerabilities in Linux, Linux-5.10, Linux-5.15

In the Linux kernel, the following vulnerability has been resolved: net: cdcncm: Handling too low values of dwNtbOutMaxSize. Currently, in cdcncmchecktxmax, if dwNtbOutMaxSize is lower than the calculated “minimum” value but greater than zero, the logic sets txmax to dwNtbOutMaxSize. This value i...

AlmaLinux 9.6 [TuxCare] Security Update: kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1786824415)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1786824415 advisory. - In the Linux kernel, the following vulnerability has been resolved: CDC-NCM: avoid overflow in sanity checking A broken device may...

EUVD-2026-88575

The MCUmgr SMP-over-console transport decodes a base64 frame, reads a 16-bit packet length from it, verifies a CRC and then unconditionally strips the trailing CRC with rxctxt-nb-len -= 2U; in mcumgrserialprocessfrag subsys/mgmt/mcumgr/transport/src/serialutil.c. mcumgrserialextractlen accepted a...

Astra Linux – Vulnerability in Linux 5.10, Linux

In the Linux kernel, the following vulnerability has been resolved: CDC-NCM: Avoid overflows in sanity checks. A malfunctioning device may produce an extreme offset like 0xFFF0, along with a fragment of reasonable length. In the currently formulated sanity check, this will cause an integer...

AZL-100289 CVE-2026-80983 affecting package kernel for versions less than 6.6.157.1-1

In the Linux kernel, the following vulnerability has been resolved: net/smc: fix socket refcount leak in smcswitchconns smcswitchconns takes a reference on the SMC socket before dropping lgr-connslock, so the connection stays alive while the CDC slot is fetched: sockhold&smc-sk;...

CVE-2026-80594

A flaw was found in the Linux kernel's ims-pcu driver. This vulnerability allows a malicious device to trigger an infinite loop by providing a specially crafted descriptor with a zero-length field during the parsing of CDC union descriptors. This can lead to a Denial of Service DoS condition,...

Linux USB Device Driver Heap Buffer Overflow DoS

The vulnerability of the wdmincallback function in the drivers/usb/class/cdc-wdm.c file of the Linux operating system’s USB device driver framework is related to security configuration errors. Exploiting this vulnerability could allow an attacker to cause service failures...