CVE-2026-18746 NULL pointer dereference in Zephyr LwM2M client when the CoAP Block1 context pool is exhausted

parsewriteop in subsys/net/lib/lwm2m/lwm2mmessagehandling.c handles inbound CoAP WRITE/CREATE requests that carry a Block1 option. For the first block of a transfer it called initblockctx and then immediately stored the peer-selected block size with blockctx-ctx.blocksize = blocksize before...

CVE-2026-18417

The Zephyr RTOS native BSD-socket layer contains a wild pointer dereference vulnerability when a TCP listening socket reports an asynchronous error. The root cause is type-punning an error status into the user_data field of struct net_context. In version v4.3.0 , a second interface-down event can...

CVE-2026-18417 Wild pointer dereference in Zephyr BSD sockets when a TCP listening socket reports an asynchronous error

The native BSD-socket layer recorded a pending asynchronous socket error by type-punning it into struct netcontext's void userdata field ctx-userdata = INTTOPOINTER-status in zsockacceptedcb, zsockreceivedcb, zsockconnectedcb and zsockclosectx in subsys/net/lib/sockets/socketsinet.c, reading it...

CVE-2026-18417 Wild pointer dereference in Zephyr BSD sockets when a TCP listening socket reports an asynchronous error

The native BSD-socket layer recorded a pending asynchronous socket error by type-punning it into struct netcontext's void userdata field ctx-userdata = INTTOPOINTER-status in zsockacceptedcb, zsockreceivedcb, zsockconnectedcb and zsockclosectx in subsys/net/lib/sockets/socketsinet.c, reading it...

CVE-2026-98043

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF verifier. The verifier incorrectly assumes that certain pointer types are non-null without accounting for unbounded offsets that can wrap around to zero at runtime. A local user with permissions to load BPF programs can exploit thi...

CVE-2026-65412

A flaw was found in webkitgtk. Improper input validation can lead to a null pointer dereference, an error that occurs when software attempts to access an invalid memory location. By convincing a user to process specially crafted web content, a remote attacker could trigger an application crash,...

CVE-2026-98040

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF verifier. When validating conditional jump operations using register comparisons against null values, the verifier fails to properly track register precision across different execution paths. A local user capable of loading BPF...

CVE-2026-98038

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF subsystem. When validating programs that manage shared reference-counted objects, the BPF verifier incorrectly treats borrowed references as always valid and fails to require null-pointer checks. A local user can exploit this...

CVE-2026-98030

A flaw was found in the Linux kernel's Broadcom Starfighter 2 bcmsf2 network switch driver. An unprivileged local user can exploit this vulnerability by issuing a network control request to retrieve classification rules while providing a buffer size smaller than the number of active rules. Becaus...

CVE-2026-98029

A flaw was found in the Linux kernel's Netronome Flow Processor NFP network driver. The driver fails to validate the user-provided buffer size when retrieving network flow steering rules. An unprivileged local user can exploit this vulnerability to trigger an out-of-bounds memory write or a null...

CVE-2026-98027

A flaw was found in the Linux kernel's Marvell 88E6xxx switch driver. The driver fails to validate the caller's buffer boundary when retrieving network policy rules, leading to memory writes beyond the allocated buffer or a null pointer dereference. A local unprivileged user can exploit this...

CVE-2026-98008

A flaw was found in the Linux kernel's Cadence MACB ethernet driver. A local user with administrative privileges could cause a denial of service DoS by triggering a driver unbind operation or an initialization failure on a device configured with a fixed-link connection. In this configuration, the...

CVE-2026-97526

A flaw was found in the Linux kernel's s390 Processor Activity Instrumentation PAI performance monitoring unit. This vulnerability allows a local user to cause a Denial of Service DoS by crashing the operating system. When a CPU is dynamically added hotplugged during an active performance...

CVE-2026-97519

A flaw was found in the Linux kernel's Intel Xe graphics driver. When device core dump cleanup routines are triggered without a completed capture, the driver attempts to access uninitialized snapshot data. A local user could exploit this issue to cause a null pointer dereference, resulting in a...

CVE-2026-97516

A flaw was found in the Linux kernel's rtw88 wireless driver. The driver fails to verify whether certain hardware configuration settings exist before accessing them during firmware adaptivity processing. On systems equipped with specific wireless chipsets, this flaw triggers a null pointer...

MGASA-2026-0459 Updated libxml2 packages fix security vulnerabilities

The updated packages fix several security issues: Stack-Based Buffer Overflow in libxml2. CVE-2026-11979 In libxml2 before 2.15.4, xmlFAParsePosCharGroup has an out-of-bounds read, aka an out-of-bounds read in the NXT macro in xmlregexp. CVE-2026-86137 In libxml2 before 2.15.4, xmlDictAddQString ...

Updated libxml2 packages fix security vulnerabilities

The updated packages fix several security issues: Stack-Based Buffer Overflow in libxml2. CVE-2026-11979 In libxml2 before 2.15.4, xmlFAParsePosCharGroup has an out-of-bounds read, aka an out-of-bounds read in the NXT macro in xmlregexp. CVE-2026-86137 In libxml2 before 2.15.4, xmlDictAddQString ...

CVE-2026-98151

A flaw was found in the Linux kernel's BPF Berkeley Packet Filter verifier. A local user can trigger a Denial of Service DoS or kernel verification failure by loading a specially crafted BPF program containing speculative pointer arithmetic. This issue occurs because register subregister bounds a...

CVE-2026-93825

A flaw was found in the Linux kernel's Serial Peripheral Interface SPI subsystem. This vulnerability allows a local user to cause a Denial of Service DoS through a system crash. The issue occurs because the spigetdevicematchdata function does not verify whether a device identifier exists before...

CVE-2026-97506

A flaw was found in the Linux kernel's Intel IXP4xx crypto driver. When memory allocation fails while constructing buffer descriptor chains for cryptographic operations, the driver attempts to access an invalid null pointer. A local user could exploit this flaw under low-memory conditions to...