CVE-2026-10653

The Zephyr netbuf library lib/netbuf/buf.c manipulated both of its reference counts -- the per-header buf-ref and the per-data-block refcount at the start of each variable/heap data allocation -- with plain non-atomic C operators buf-ref++, if --buf-ref 0, if --refcount. The API is documented as...

CVE-2026-10653 Non-atomic `net_buf` reference counts cause double-free / free-list corruption under concurrent unref

The Zephyr netbuf library lib/netbuf/buf.c manipulated both of its reference counts -- the per-header buf-ref and the per-data-block refcount at the start of each variable/heap data allocation -- with plain non-atomic C operators buf-ref++, if --buf-ref 0, if --refcount. The API is documented as...

CVE-2026-10653

The CVE-2026-10653 issue affects the Zephyr net_buf library (lib/net_buf/buf.c). It relies on non-atomic operations for two reference counters: the per-header buf->ref and the per-data-block ref_count. Under true concurrency, two independent unrefs can observe the same prior value and both tre...

CVE-2026-10653 Non-atomic `net_buf` reference counts cause double-free / free-list corruption under concurrent unref

The Zephyr netbuf library lib/netbuf/buf.c manipulated both of its reference counts -- the per-header buf-ref and the per-data-block refcount at the start of each variable/heap data allocation -- with plain non-atomic C operators buf-ref++, if --buf-ref 0, if --refcount. The API is documented as...

CVE-2026-10648

mcumgrserialprocessfrag in subsys/mgmt/mcumgr/transport/src/serialutil.c calls netbufreset on the result of smppacketalloc before checking it for NULL. smppacketalloc uses netbufallocKNOWAIT against the shared MCUmgr packet pool CONFIGMCUMGRTRANSPORTNETBUFCOUNT, default 4, which returns NULL when...

PT-2026-53755

Name of the Vulnerable Software and Affected Versions Zephyr version 4.4.0 Description An issue exists where the mcumgr serial process frag function in subsys/mgmt/mcumgr/transport/src/serial util.c calls net buf reset on the result of smp packet alloc without first verifying if the result is NUL...

CVE-2026-5068 bt: l2cap le coc: remote oob write via seg counter stored in net_buf user_data

A remote, unauthenticated BLE peer can trigger a 2-byte out-of-bounds write in the Bluetooth host during L2CAP LE CoC SDU reassembly. When the application enables segmentation via chanops.allocbuf and the chosen RX pool has a userdatasize smaller than 2 bytes, the segmentation counter stored in t...

CVE-2026-5068 bt: l2cap le coc: remote oob write via seg counter stored in net_buf user_data

A remote, unauthenticated BLE peer can trigger a 2-byte out-of-bounds write in the Bluetooth host during L2CAP LE CoC SDU reassembly. When the application enables segmentation via chanops.allocbuf and the chosen RX pool has a userdatasize smaller than 2 bytes, the segmentation counter stored in t...

RLSA-2026:2282 Moderate: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: Linux kernel: Memory corruption in Squashfs due to incorrect block size calculation CVE-2025-38415 kernel: vsock/vmci: Clear the vmci transport packet properly when initializing it...

ALSA-2026:2282 Moderate: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: Linux kernel: Memory corruption in Squashfs due to incorrect block size calculation CVE-2025-38415 kernel: vsock/vmci: Clear the vmci transport packet properly when initializing it...

EUVD-2024-47380

Malicious code in bioql PyPI...

CVE-2025-38375

In the Linux kernel, the following vulnerability has been resolved: virtio-net: ensure the received length does not exceed allocated size In xdplinearizepage, when reading the following buffers from the ring, we forget to check the received length with the true allocate size. This can lead to an...

CVE-2025-38375 virtio-net: ensure the received length does not exceed allocated size

In the Linux kernel, the following vulnerability has been resolved: virtio-net: ensure the received length does not exceed allocated size In xdplinearizepage, when reading the following buffers from the ring, we forget to check the received length with the true allocate size. This can lead to an...

CVE-2024-6258 BT: Missing length checks of net_buf in rfcomm_handle_data

BT: Missing length checks of netbuf in rfcommhandledata...

Zephyr 安全漏洞

Zephyr is an extensible real-time operating system RTOS open-sourced by Zephyr. A security vulnerability exists in Zephyr version 3.6 and prior versions, which stems from a lack of checking the length of netbuf when processing data for the RFCOMM protocol, which could lead to a heap-based buffer...

OESA-2024-1312 qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. Security Fixes: A DMA reentrancy issue leading to a use-after-free error was found in the e1000e NIC emulation code in QEMU. This issue could allow a privileged guest user to crash the QEMU process on th...

CVE-2021-3966

usb device bluetooth class includes a buffer overflow related to implementation of netbufaddmem...

OracleVM 3.2 : Unbreakable / etc (OVMSA-2017-0106)

The remote OracleVM system is missing necessary patches to address critical security updates : - nfsd: stricter decoding of write-like NFSv2/v3 ops J. Bruce Fields Orabug: 25986995 CVE-2017-7895 - ocfs2/o2net: o2netlistendataready should do nothing if socket state is not TCPLISTEN Tariq Saeed...

Fedora 22 : xen-4.5.3-2.fc22 (2016-75063477ca)

x86 shadow pagetables: address width overflow XSA-173, CVE-2016-3960 Qemu: net: buffer overflow in stellarisenet emulator CVE-2016-4001 Qemu: net: buffer overflow in MIPSnet emulator CVE-2016-4002 qemu: Infinite loop vulnerability in usbehci using siTD process CVE-2016-4037 Note that Tenable...

kvm security update

kvm-83-274.0.1.el5 - Added kvm-add-oracle-workaround-for-libvirt-bug.patch - Added kvm-Introduce-oel-machine-type.patch kvm-83.274.el5 - net-add-checks-to-validate-ring-buffer-pointers.patch bz1263272 - Resolves: bz1263272 CVE-2015-5279 kvm: qemu: Heap overflow vulnerability in ne2000receive...