linux kernel

The Linux kernel’s Wi-Fi mesh stack has picked up another security-relevant crash fix, and this one is a reminder that optional protocol elements can be just as dangerous as the core packet parser. CVE-2026-23396 tracks a NULL pointer dereference in mac80211’s mesh_matches_local() routine, where...

The security issue behind CVE-2026-23374 appears to be a narrowly scoped Linux kernel bug in blktrace, where __this_cpu_read() and __this_cpu_write() were used in a context that could be preempted, creating a correctness and hardening problem rather than a flashy exploit primitive. The phrasing...

The Linux kernel is once again at the center of a subtle but important reliability fix, and this time the issue sits inside irqchip/sifive-plic, the interrupt-controller driver used on SiFive RISC-V platforms. The vulnerability, identified as CVE-2026-23287, is described as a frozen interrupt...

CVE-2026-23339 is a small-looking Linux kernel bug with the kind of lifecycle mistake that kernel engineers never ignore: nci_transceive() takes ownership of an skb, then returns early on several error paths without freeing it. The result is a memory leak on the -EPROTO, -EINVAL, and -EBUSY...

A newly tracked Linux kernel flaw, CVE-2026-23334, is drawing attention because it sits in a low-level USB CAN driver, not because it advertises an obvious remote exploit path. The bug affects the Fintek F81604 USB CAN implementation and was fixed by teaching the driver to reject short interrupt...

In early 2026, the Linux kernel’s NFC stack gained a security fix that is easy to overlook at a glance but important in practice: CVE-2026-23372 closes a race in the rawsock path where transmit work could outlive the socket teardown sequence. The bug sits in a classic kernel danger...

When Linux boots with ipv6.disable=1, a narrow but important networking assumption can collapse in the VXLAN transmit path, producing a kernel NULL pointer dereference when an IPv6 packet is injected into the interface. The upstream fix for CVE-2026-23293 adds an early guard in...

Linux has assigned CVE-2026-23371 to a scheduler bug in the SCHED_DEADLINE code path, and the issue is notable less for a classic crash-and-burn exploit pattern than for what it reveals about the fragility of deadline scheduling under priority inheritance. The flaw centers on a missing...

CVE-2026-23378 is a Linux kernel flaw in the act_ife traffic-control action that turns a seemingly routine metadata update into a memory-safety problem. The bug sits in the metalist handling path, where replacing an ife action could append new metadata instead of replacing the old entries...

The Microsoft Security Response Center entry for CVE-2026-23348 points to a Linux kernel issue in the CXL path: a race involving the nvdimm_bus object when creating nvdimm objects. In practical terms, that means a kernel subsystem responsible for persistent memory enumeration and device...

CVE-2026-23313 is a deceptively small Linux kernel fix with outsized value for anyone tracking networking stack reliability, especially in enterprise and virtualized environments. Microsoft’s Security Update Guide identifies the issue as “i40e: Fix preempt count leak in napi poll tracepoint,”...

The Linux kernel’s CVE-2026-23359 is a classic example of how a small-looking bounds mistake in BPF devmap code can turn into a real memory-safety problem. The issue sits in get_upper_ifindexes(), where the kernel walks every upper device and writes interface indices into an array without...

Linux kernel maintainers have assigned CVE-2026-23391 to a netfilter / xt_CT race condition fix that drops packets still sitting in nfqueue when a template rule is removed. The issue matters because the template can reference stateful objects such as a helper module or a timeout policy, and...

Linux’s latest scheduler-related security fix, CVE-2026-23379, is a reminder that even “small” arithmetic mistakes in kernel offload code can have outsized consequences. The flaw sits in the ETS traffic scheduler path, where the kernel computes weighted round-robin parameters for hardware...

In the Linux kernel’s Wi-Fi stack, CVE-2026-23367 is a small-looking bug with an important lesson: even parser code that merely rejects malformed input can still trip over uninitialized state and crash-prone logic. The flaw lives in the radiotap iterator used by mac80211 and related networking...

When Microsoft’s security feed labeled CVE-2026-23347 around the Fintek F81604 USB CAN driver, the underlying bug looked deceptively small: a missing call to usb_anchor_urb() in the read bulk callback. In kernel terms, though, that small omission matters because an anchored URB is what lets the...

Using the uploaded CVE text plus kernel and Microsoft advisory context, I’m drafting the article as a publish-ready feature with no citations or links in the body per your output contract. A newly disclosed Linux kernel flaw, tracked as CVE-2026-23381, exposes a sharp edge in bridge networking...

CVE-2026-23390 is a textbook example of how a small tracing feature can become a security concern when real-world workloads push it beyond the assumptions baked into the code. The Linux kernel’s dma_map_sg tracepoint could allocate dynamic arrays large enough to overflow the fixed...

The Linux kernel’s ALSA stack has another reminder that tiny copy-and-paste mistakes can become security bugs: CVE-2026-23318 lets a UAC3 USB audio header skip validation because the driver checks it against the wrong protocol version. In practice, that means an actual UAC3 device may never...

The Linux kernel’s NFC stack is getting a small but important correctness fix in CVE-2026-23330, and the problem is exactly the kind of lifecycle bug that kernel maintainers try to stamp out early. In nci_close_device(), the kernel now completes any pending data exchange before the NFC device is...