CVE-2026-42478

Denial of Service via Crafted VRML File in Open CASCADE V8_0_0_rc5

An issue was discovered in VrmlData_IndexedFaceSet::TShape in the VRML V2.0 parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows attackers to cause a denial of service via a crafted VRML file. The issue occurs because malformed VRML input can trigger dereference of a corrupt or unvalidated pointer during shape construction in libTKDEVRML.so.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Opencascade

Products

Open Cascade Technology

CVE-2026-6526

NULL Pointer Dereference in Wireshark

RTSP protocol dissector crash in Wireshark 4.6.0 to 4.6.4

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Wireshark

Products

Wireshark

CVE-2026-6530

Heap-based Buffer Overflow in Wireshark

DCP-ETSI protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Wireshark

Products

Wireshark

CVE-2026-7378

Heap-based Buffer Overflow in Wireshark

Crash in sharkd 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Wireshark

Products

Wireshark

CVE-2026-5653

Heap-based Buffer Overflow in Wireshark

DCP-ETSI protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Wireshark

Products

Wireshark

CVE-2026-4652

Remote denial of service via null pointer dereference

On a system exposing an NVMe/TCP target, a remote client can trigger a kernel panic by sending a CONNECT command for an I/O queue with a bogus or stale CNTLID. An attacker with network access to the NVMe/TCP target can trigger an unauthenticated Denial of Service condition on the affected machine.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Freebsd

Products

Freebsd

CVE-2026-23443

ACPI: processor: Fix previous acpi_processor_errata_piix4() fix

In the Linux kernel, the following vulnerability has been resolved: ACPI: processor: Fix previous acpi_processor_errata_piix4() fix After commi f132e089fe89 ("ACPI: processor: Fix NULL-pointer dereference in acpi_processor_errata_piix4()"), device pointers may be dereferenced after dropping references to the device objects pointed to by them, which may cause a use-after-free to occur. Moreover, debug messages about enabling the errata may be printed if the errata flags corresponding to them are unset. Address all of these issues by moving message printing to the points in the code where the errata flags are set.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Linux

Products

Linux Kernel

CVE-2026-0918

Null Pointer Dereference in Tapo SmartCam HTTP Service on TP-Link Tapo C220 & C520WS

The Tapo C100 v5, C220 v1 and C520WS v2 cameras’ HTTP service does not safely handle POST requests containing an excessively large Content-Length header. The resulting failed memory allocation triggers a NULL pointer dereference, causing the main service process to crash. An unauthenticated attacker can repeatedly crash the service, causing temporary denial of service. The device restarts automatically, and repeated requests can keep it unavailable.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Tp-link

Products

Tapo Tapo C220 Tapo C220 Firmware and 4 more

CVE-2025-31202

Null Pointer Dereference Causing Local Network Denial of Service in Apple OS

A null pointer dereference was addressed with improved input validation. This issue is fixed in iOS 18.4 and iPadOS 18.4, macOS Sequoia 15.4, tvOS 18.4, visionOS 2.4. An attacker on the local network may be able to cause a denial-of-service.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple

Products

Ipados Iphone Os Macos and 2 more

CVE-2025-24179

Null Pointer Dereference Causing Denial of Service on Apple Operating Systems

A null pointer dereference was addressed with improved input validation. This issue is fixed in iOS 18.3 and iPadOS 18.3, iPadOS 17.7.6, macOS Sequoia 15.3, macOS Sonoma 14.7.5, macOS Ventura 13.7.5, tvOS 18.3, visionOS 2.3. An attacker on the local network may be able to cause a denial-of-service.

CVSS 3.1 · 5.7 Medium EPSS < 1% KEV · Not listed

Vendors

Apple

Products

Ipados Iphone Os Macos and 2 more

CVE-2026-31544

firmware: arm_scmi: Fix NULL dereference on notify error path

In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix NULL dereference on notify error path Since commit b5daf93b809d1 ("firmware: arm_scmi: Avoid notifier registration for unsupported events") the call chains leading to the helper __scmi_event_handler_get_ops expect an ERR_PTR to be returned on failure to get an handler for the requested event key, while the current helper can still return a NULL when no handler could be found or created. Fix by forcing an ERR_PTR return value when the handler reference is NULL.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Linux

Products

Linux Kernel

CVE-2016-10708

openssh: Out of sequence NEWKEYS message can allow remote attacker to cause denial of service

sshd in OpenSSH before 7.4 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence NEWKEYS message, as demonstrated by Honggfuzz, related to kex.c and packet.c.

CVSS 3.1 · 7.5 High EPSS 15.7% KEV · Not listed

Vendors

Canonical Debian Netapp and 2 more

Products

Ubuntu Linux Debian Linux Cloud Backup and 10 more

CVE-2026-31621

bnge: return after auxiliary_device_uninit() in error path

In the Linux kernel, the following vulnerability has been resolved: bnge: return after auxiliary_device_uninit() in error path When auxiliary_device_add() fails, the error block calls auxiliary_device_uninit() but does not return. The uninit drops the last reference and synchronously runs bnge_aux_dev_release(), which sets bd->auxr_dev = NULL and frees the underlying object. The subsequent bd->auxr_dev->net = bd->netdev then dereferences NULL, which is not a good thing to have happen when trying to clean up from an error. Add the missing return, as the auxiliary bus documentation states is a requirement (seems that LLM tools read documentation better than humans do...)

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Linux

Products

Linux Kernel

CVE-2026-31481

tracing: Drain deferred trigger frees if kthread creation fails

In the Linux kernel, the following vulnerability has been resolved: tracing: Drain deferred trigger frees if kthread creation fails Boot-time trigger registration can fail before the trigger-data cleanup kthread exists. Deferring those frees until late init is fine, but the post-boot fallback must still drain the deferred list if kthread creation never succeeds. Otherwise, boot-deferred nodes can accumulate on trigger_data_free_list, later frees fall back to synchronously freeing only the current object, and the older queued entries are leaked forever. To trigger this, add the following to the kernel command line: trace_event=sched_switch trace_trigger=sched_switch.traceon,sched_switch.traceon The second traceon trigger will fail and be freed. This triggers a NULL pointer dereference and crashes the kernel. Keep the deferred boot-time behavior, but when kthread creation fails, drain the whole queued list synchronously. Do the same in the late-init drain path so queued entries are not stranded there either.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Linux

Products

Linux Kernel

CVE-2025-24251

NULL Pointer Dereference Leading to App Crash via Local Network

The issue was addressed with improved checks. This issue is fixed in iOS 18.4 and iPadOS 18.4, iPadOS 17.7.6, macOS Sequoia 15.4, macOS Sonoma 14.7.5, macOS Ventura 13.7.5, tvOS 18.4, visionOS 2.4, watchOS 11.4. An attacker on the local network may cause an unexpected app termination.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Apple

Products

Ipados Iphone Os Macos and 3 more

CVE-2025-24177

Denial of Service via Null Pointer Dereference in Apple iOS, iPadOS and macOS

A null pointer dereference was addressed with improved input validation. This issue is fixed in iOS 18.3 and iPadOS 18.3, iPadOS 17.7.6, macOS Sequoia 15.3, macOS Sonoma 14.7.5, macOS Ventura 13.7.5. An attacker on the local network may be able to cause a denial-of-service.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Apple

Products

Ipados Iphone Os Macos

CVE-2026-31477

ksmbd: fix memory leaks and NULL deref in smb2_lock()

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix memory leaks and NULL deref in smb2_lock() smb2_lock() has three error handling issues after list_del() detaches smb_lock from lock_list at no_check_cl: 1) If vfs_lock_file() returns an unexpected error in the non-UNLOCK path, goto out leaks smb_lock and its flock because the out: handler only iterates lock_list and rollback_list, neither of which contains the detached smb_lock. 2) If vfs_lock_file() returns -ENOENT in the UNLOCK path, goto out leaks smb_lock and flock for the same reason. The error code returned to the dispatcher is also stale. 3) In the rollback path, smb_flock_init() can return NULL on allocation failure. The result is dereferenced unconditionally, causing a kernel NULL pointer dereference. Add a NULL check to prevent the crash and clean up the bookkeeping; the VFS lock itself cannot be rolled back without the allocation and will be released at file or connection teardown. Fix cases 1 and 2 by hoisting the locks_free_lock()/kfree() to before the if(!rc) check in the UNLOCK branch so all exit paths share one free site, and by freeing smb_lock and flock before goto out in the non-UNLOCK branch. Propagate the correct error code in both cases. Fix case 3 by wrapping the VFS unlock in an if(rlock) guard and adding a NULL check for locks_free_lock(rlock) in the shared cleanup. Found via call-graph analysis using sqry.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

Vendors

Linux

Products

Linux Kernel

CVE-2026-31646

net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool()

In the Linux kernel, the following vulnerability has been resolved: net: lan966x: fix page_pool error handling in lan966x_fdma_rx_alloc_page_pool() page_pool_create() can return an ERR_PTR on failure. The return value is used unconditionally in the loop that follows, passing the error pointer through xdp_rxq_info_reg_mem_model() into page_pool_use_xdp_mem(), which dereferences it, causing a kernel oops. Add an IS_ERR check after page_pool_create() to return early on failure.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Linux

Products

Linux Kernel

CVE-2026-31660

nfc: pn533: allocate rx skb before consuming bytes

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: allocate rx skb before consuming bytes pn532_receive_buf() reports the number of accepted bytes to the serdev core. The current code consumes bytes into recv_skb and may already hand a complete frame to pn533_recv_frame() before allocating a fresh receive buffer. If that alloc_skb() fails, the callback returns 0 even though it has already consumed bytes, and it leaves recv_skb as NULL for the next receive callback. That breaks the receive_buf() accounting contract and can also lead to a NULL dereference on the next skb_put_u8(). Allocate the receive skb lazily before consuming the next byte instead. If allocation fails, return the number of bytes already accepted.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Linux

Products

Linux Kernel

CVE-2026-31549

i2c: cp2615: fix serial string NULL-deref at probe

In the Linux kernel, the following vulnerability has been resolved: i2c: cp2615: fix serial string NULL-deref at probe The cp2615 driver uses the USB device serial string as the i2c adapter name but does not make sure that the string exists. Verify that the device has a serial number before accessing it to avoid triggering a NULL-pointer dereference (e.g. with malicious devices).

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Linux

Products

Linux Kernel