CVE-2026-74544

The CVE-2026-74544 issue is in the Linux kernel net/sched cls_u32 implementation. u32_change() copies offshift (unsigned char, 0-255) without bounds checks, enabling undefined behavior (shift-out-of-bounds) in u32_classify() when TC_U32_VAROFFSET is set and offshift ≥ 32. Public sources (Linux ke...

CVE-2026-74543

CVE-2026-74543 concerns the Linux kernel UDP tunnel NIC offload code. The issue: when device registration fails, the code may leak a struct udp_tunnel_nic due to an early return if utn->work_pending is set, because no subsequent NETDEV_UNREGISTER rebroadcast occurs. The fix, as described in co...

CVE-2026-74542

CVE-2026-74542: In the Linux kernel netfs subsystem, a memory allocation path for folio_queue in writeback could fail, triggering ENOMEM. The fix adds a mempool and passes GFP flags to rolling buffer allocations, using the mempool if GFP_KERNEL is not used, and propagates the chosen GFP from netf...

CVE-2026-74541

CVE-2026-74541 relates to the Linux kernel Bluetooth ISO path. The vulnerability arises when detaching a connection from hcon without clearing conn->hcon->iso_data, leading to a use-after-free in iso_conn_free() and potential UAF unless iso_data is cleared. The fixed sequence clears iso_dat...

CVE-2026-74540

CVE-2026-74540 affects the Linux kernel Bluetooth L2CAP stack. The vulnerability arises in l2cap_le_connect_rsp() where a channel is obtained via __l2cap_get_chan_by_ident() without holding a reference; a concurrent remote disconnect could free the channel before l2cap_chan_lock(), causing a use-...

CVE-2026-74538

Vulnerability CVE-2026-74538 affects the Linux kernel Bluetooth ISO handling. Accessing iso_pi(sk)->conn may race with locking because lock_sock is not ensured in the ev3 portion of iso_connect_ind, and conn may be NULL if the socket transitions from LISTEN/CONNECT before locking. A fix adds p...

CVE-2026-74539

The CVE-2026-74539 entry affects the Linux kernel Bluetooth ISO path. The root cause is that accessing iso_pi(sk)->conn requires lock_sock, but the lock was not held in iso_sock_getname. The fix implemented is to add the appropriate lock and release around this usage. Documents from NVD/SUSE/O...

CVE-2026-74536

In CVE-2026-74536, the Linux kernel Bluetooth ISO stack suffers a leak: iso_sock_kill() can leak the sk reference after socket release or when __iso_sock_close() does not set SOCK_ZAPPED, because sock_orphan(sk) marks SOCK_DEAD. The fix replaces SOCK_DEAD with a dedicated BT_SK_KILLED flag and ad...

CVE-2026-74537

The CVE-2026-74537 entry concerns the Linux kernel Bluetooth ISO path. A use-after-free could occur when dereferencing conn->sk in iso_conn_ready because the socket was accessed without holding a lock or a refcount. The fix adds a socket refcount in iso_conn_ready and rechecks socket validity ...

CVE-2026-74535

CVE-2026-74535 affects the Linux kernel Bluetooth ISO subsystem. The vulnerability arises in iso_sock_timeout, which takes lock_sock; keeping the timer disabled while holding that lock may deadlock, and it can run concurrently with iso_conn_del(), leading to a use-after-free of hcon.iso_data. The...

CVE-2026-74533

CVE-2026-74533 is a Linux kernel vulnerability affecting Bluetooth ISO handling. Multiple sources (Linux kernel description, SUSE, NVD, Debian, EUVD, PT Security, etc.) describe a race where hci_conn::iso_data is accessed and modified without proper locking or RCU, enabling a stale reference use ...

CVE-2026-74534

CVE-2026-74534 : Linux kernel Bluetooth ISO subsystem contains a race in refcounting of iso_conn between iso_conn_del() and iso_chan_del(), causing a double-put of iso_conn when a connection is not associated with an sock. The fix, as described in the connected documents, is to let iso_pi(sk)-&gt...

CVE-2026-74532

In the Linux kernel Bluetooth subsystem, CVE-2026-74532 affects btintel: btintel_diagnostics() which reads tlv->val[0] without verifying the diagnostics TLV length, risking reads beyond the frame. The documented fix is to validate the TLV length before access. Connected sources (SUSE, NVD, Deb...

CVE-2026-74530

CVE-2026-74530 : Linux kernel Bluetooth vulnerability in the hci_sync path (hci_connect_big_sync) may allow a use-after-free if the conn is freed while the hci_sync task runs. The root cause is a potential UAF due to a conn lifecycle race; the fix holds a refcount to prevent use-after-free and ha...

CVE-2026-74531

CVE-2026-74531 affects the Linux kernel Bluetooth implementation, specifically the hci_conn path used by abort_conn_sync. The root cause is a potential use-after-free if the connection object is freed while the hci_sync task is running. The documented fix is to hold a reference (refcount) to the ...

CVE-2026-74528

The CVE refers to the Linux kernel Bluetooth subsystem: hci_sync in the hci_past_sync() callback, which previously could dereference freed pointers to hci_conn_valid() due to kmalloc reuse. The fix holds a reference count on the connection to ensure resources remain valid, preventing use-after-fr...

CVE-2026-74529

In the Linux kernel Bluetooth subsystem, the issue is in the hci_sync path: the conn object could be freed while the hci_sync task is running in hci_connect_pa_sync(), creating a theoretical use-after-free. The documented fix is to hold a refcount on the conn to prevent deallocation during the ca...

CVE-2026-74527

CVE-2026-74527 affects the Linux kernel’s octeontx2-af pathway. PF and VF NIX LFs sharing a CGX LMAC can reuse the same hardware PKIND programming; when HiGig2 or EDSA parsing is enabled, a VF NIX LF alloc must not reset the PF’s LMAC RX PKIND or default TX parse config. The fix adds cgx_get_pkin...

CVE-2026-74526

In CVE-2026-74526, the Linux kernel fault-handling code for mpi3mr (scsi) had a potential deadlock when GFP_KERNEL allocations in mpi3mr_fault_uevent_emit could trigger memory reclaim while host I/O was blocked. The fix covers the entire call with memalloc_noio_save()/restore(), replacing the pre...

CVE-2026-74525

CVE-2026-74525 affects the Linux kernel net sxgbe driver. When RX descriptor ring allocation fails, init_dma_desc_rings() frees partial RX rings but leaks TX rings allocated earlier. The fix rearranges error labels to clean up TX rings on RX failure. Affected component: net/sxgbe RX/TX ring initi...