CVE-2026-85032

The MCTP over USB device class in subsys/pmci/mctp/mctpusb.c splits RX handling across two threads: the system workqueue runs mctpusbclassoutwork, which parses host OUT data byte by byte and fills a packet buffer at usb-rxpkt, while the USB device stack thread runs mctpusbclassdisable. The disabl...

CVE-2026-85032 Use-after-free in the MCTP over USB binding when the host disables the class while RX parsing is in progress

The MCTP over USB device class in subsys/pmci/mctp/mctpusb.c splits RX handling across two threads: the system workqueue runs mctpusbclassoutwork, which parses host OUT data byte by byte and fills a packet buffer at usb-rxpkt, while the USB device stack thread runs mctpusbclassdisable. The disabl...

CVE-2026-85032 Use-after-free in the MCTP over USB binding when the host disables the class while RX parsing is in progress

The MCTP over USB device class in subsys/pmci/mctp/mctpusb.c splits RX handling across two threads: the system workqueue runs mctpusbclassoutwork, which parses host OUT data byte by byte and fills a packet buffer at usb-rxpkt, while the USB device stack thread runs mctpusbclassdisable. The disabl...

CVE-2026-85032

The MCTP subsystem in Zephyr (built with CONFIG_MCTP_USB) is vulnerable to a use-after-free condition in the mctp_usb.c binding. The issue occurs when mctp_usb_class_disable() is triggered by a USB host (via SET_CONFIGURATION or bus reset) while the system workqueue is still parsing host OUT data...

EUVD-2026-115820

The MCTP over USB device class in subsys/pmci/mctp/mctpusb.c splits RX handling across two threads: the system workqueue runs mctpusbclassoutwork, which parses host OUT data byte by byte and fills a packet buffer at usb-rxpkt, while the USB device stack thread runs mctpusbclassdisable. The disabl...

Astra Linux – vulnerability in linux-6.1

In the Linux kernel, the following vulnerability has been resolved: mctp: serial: handle zero-length frames to prevent rx buffer overflow The MCTP serial receive state machine reads a frame length byte in mctpserialpushheader case 2 and validates it only against the upper bound: if c...

SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:4935-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4935-1 advisory. The SUSE Linux Enterprise 15 SP7 kernel was updated to fix various security issues: The following security...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 RT kernel was updated to fix various security issues: The following security issues were fixed: CVE-2025-68358: btrfs: fix racy bitfield write in btrfsclearspaceinfofull bsc1255531. CVE-2026-43091: xfrm: Wait for RCU readers during policy netns exit bsc1264267...

SUSE-SU-2026:4940-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 RT kernel was updated to fix various security issues: The following security issues were fixed: - CVE-2025-68358: btrfs: fix racy bitfield write in btrfsclearspaceinfofull bsc1255531. - CVE-2026-43091: xfrm: Wait for RCU readers during policy netns exit bsc1264267...

Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 kernel was updated to fix various security issues: The following security issues were fixed: CVE-2025-68358: btrfs: fix racy bitfield write in btrfsclearspaceinfofull bsc1255531. CVE-2026-43091: xfrm: Wait for RCU readers during policy netns exit bsc1264267...

SUSE-SU-2026:4935-1 Security update for the Linux Kernel

The SUSE Linux Enterprise 15 SP7 kernel was updated to fix various security issues: The following security issues were fixed: - CVE-2025-68358: btrfs: fix racy bitfield write in btrfsclearspaceinfofull bsc1255531. - CVE-2026-43091: xfrm: Wait for RCU readers during policy netns exit bsc1264267. -...

SUSE-SU-2026:24473-1 Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and Micro 6.1 RT kernel was updated to fix various security issues: The following security issues were fixed: - CVE-2025-68358: btrfs: fix racy bitfield write in btrfsclearspaceinfofull bsc1255531. - CVE-2026-43091: xfrm: Wait for RCU readers during policy netn...

Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and Micro 6.1 RT kernel was updated to fix various security issues: The following security issues were fixed: CVE-2025-68358: btrfs: fix racy bitfield write in btrfsclearspaceinfofull bsc1255531. CVE-2026-43091: xfrm: Wait for RCU readers during policy netns ex...

Security update for the Linux Kernel

The SUSE Linux Enterprise Micro 6.0 and Micro 6.1 RT kernel was updated to fix various security issues: The following security issues were fixed: CVE-2025-68358: btrfs: fix racy bitfield write in btrfsclearspaceinfofull bsc1255531. CVE-2026-43091: xfrm: Wait for RCU readers during policy netns ex...

CVE-2026-98812

A flaw was found in the Linux kernel's Management Component Transport Protocol MCTP subsystem. This vulnerability allows a local user to cause a Denial of Service DoS by triggering a kernel crash. During device setup, the kernel exposes the network device object before its internal pointers are...

SUSE CVE-2026-98525

In the Linux kernel, the following vulnerability has been resolved: mctp: route: iterate socket tag list in mctplookupprealloctag When a socket transmits a packet with MCTPTAGPREALLOC set, mctplookupprealloctag iterates over the per-netns &mns-keys list and matches netid, reqtag, peeraddr, and...

CVE-2026-79976

The MCTP-over-I2C+GPIO target binding in subsys/pmci/mctp/mctpi2cgpiotarget.c emulates a small pseudo-register file, where the bus controller first writes a register number and then writes or reads payload bytes. The selected register b-regaddr and the data-phase flag b-rxtx were never cleared wh...

CVE-2026-79976

The MCTP-over-I2C+GPIO target binding in subsys/pmci/mctp/mctp_i2c_gpio_target.c is vulnerable to a NULL pointer dereference because the b->reg_addr and b->rxtx flags are not cleared when an I2C STOP is issued. This allows a controller on the shared management bus to re-enter mctp_i2c_gpio_...

CVE-2026-79976 NULL pointer dereference in the MCTP I2C+GPIO target binding triggerable by a peer I2C controller

The MCTP-over-I2C+GPIO target binding in subsys/pmci/mctp/mctpi2cgpiotarget.c emulates a small pseudo-register file, where the bus controller first writes a register number and then writes or reads payload bytes. The selected register b-regaddr and the data-phase flag b-rxtx were never cleared wh...

CVE-2026-79976 NULL pointer dereference in the MCTP I2C+GPIO target binding triggerable by a peer I2C controller

The MCTP-over-I2C+GPIO target binding in subsys/pmci/mctp/mctpi2cgpiotarget.c emulates a small pseudo-register file, where the bus controller first writes a register number and then writes or reads payload bytes. The selected register b-regaddr and the data-phase flag b-rxtx were never cleared wh...