linux kernel

A newly published Linux kernel vulnerability, CVE-2026-31680, highlights a familiar but consequential class of networking bugs: a lifetime mismatch in code protected by RCU, Linux’s high-performance read-side synchronization model. The flaw sits in the IPv6 flow label implementation, where a...

CVE-2026-31685 is a newly published Linux kernel vulnerability that turns a tiny netfilter guard condition into a useful reminder about how fragile packet parsing can be at kernel speed. The flaw sits in ip6t_eui64, an IPv6 iptables match module that compares an Ethernet-derived EUI-64...

CVE-2026-31639 is a small-looking Linux kernel fix with the kind of operational footprint that administrators should not ignore: an rxrpc key reference count leak tied to client call teardown. The issue, published on April 24, 2026 and still awaiting full NVD enrichment, centers on a missing...

CVE-2026-31560 is a small Linux kernel fix with an outsized lesson: sometimes the crash is not in the failed hardware transaction, but in the error log that tries to describe it. The flaw sits in the DesignWare SPI DMA path, where a timeout or error could leave the driver without a current SPI...

A small Linux kernel bounds-check fix has become a useful case study in how modern vulnerability management treats even niche hardware paths as security-relevant. CVE-2026-31627 addresses an SMBus block-read length validation flaw in the Linux kernel’s Samsung s3c24xx I2C host driver, where the...

CVE-2026-23420 is not the kind of Linux kernel vulnerability that produces instant panic, but it is exactly the kind that separates mature patch management from checkbox security. The issue sits in the wlcore Wi-Fi driver, where a mutex could be unlocked without first being locked, creating an...

CVE-2026-31570: Linux Kernel CAN Gateway Heap Out-of-Bounds Access in cgw_csum_crc8_rel() Short version: CVE-2026-31570 is a Linux kernel vulnerability in the SocketCAN CAN gateway code, specifically in the CRC8 checksum handling path in net/can/gw.c. The bug can cause out-of-bounds heap reads...

Overview CVE-2026-31637 is a Linux kernel vulnerability in the RxRPC security path, specifically in the rxkad authentication code. The issue is small at the code level but important in principle: the kernel attempted to decrypt an RxKAD response ticket, then continued parsing the ticket buffer...

CVE-2026-31617 is a newly disclosed Linux kernel vulnerability in the USB gadget Network Control Model path, and its importance lies less in a dramatic internet-scale exploit scenario than in the quiet places where Linux devices plug into trusted hosts. The flaw sits in f_ncm, the kernel...

Linux kernel maintainers have published a fix for CVE-2026-31619, a flaw in the ALSA fireworks FireWire audio driver that can let a device-supplied 32-bit status value run past the end of a string table. The bug is narrowly scoped, but it is exactly the kind of kernel defect that matters: a...

Linux systems that carry the affected aqc111 USB Ethernet driver are now being flagged for CVE-2026-23446, a vulnerability rooted in the driver’s suspend path and its improper use of power-management calls while the USB core is already suspending the device. The kernel-side fix is...

A newly tracked Linux kernel flaw in the Marvell mvpp2 Ethernet driver shows how a tiny missing condition can still bring down a system, and this one is now cataloged as CVE-2026-23438. The bug is a NULL pointer dereference in the buffer-switching path, triggered when the driver updates...

Windows 95 and Windows 98 have long since become punchlines in modern computing, but every so often the retro world produces something that feels less like nostalgia and more like a proof of concept for sheer engineering audacity. WSL9x is one of those projects: an experimental, GPL-3-licensed...

In the Linux kernel’s CAN subsystem, CVE-2026-31532 closes a use-after-free bug in the raw socket receive path, specifically in raw_rcv(). The flaw is subtle but important: raw_release() unregisters CAN receive filters while receiver deletion is deferred via call_rcu(), creating a window where...

In the Linux kernel, CVE-2026-31525 has exposed a subtle but serious correctness flaw in the BPF interpreter’s signed 32-bit division and modulo paths. The issue is not a classic memory corruption bug; it is a math bug with security consequences, triggered when the interpreter handles S32_MIN...

Linux administrators are waking up to a new XFS kernel flaw that looks deceptively small in code but serious in consequence. CVE-2026-31453 affects the Linux kernel’s XFS journaling path, where tracepoint code can dereference a log item after a push callback has already made it eligible for...

In the Linux kernel’s Bluetooth stack, CVE-2026-31498 is the kind of bug that looks routine at first glance and then turns out to be two problems in one: a resource leak in L2CAP ERTM reconfiguration and a potential infinite loop triggered by a zero packet size. The published fix targets the...

CVE-2026-31503 is a small-looking Linux kernel networking fix with outsized operational significance: UDP’s port-bind conflict detection could miss a collision when the code switched to the newer hash2 lookup path, allowing a wildcard bind such as [::]:8888 or 0.0.0.0:8888 to succeed even though...

Overview CVE-2026-31509 is a Linux kernel vulnerability in the NFC NCI path that was published on April 22, 2026, and quickly drew attention because the bug is not a flashy memory corruption issue but a locking-order failure with real stability implications. The upstream fix is narrowly scoped...

The Linux kernel has published CVE-2026-31447 for an ext4 mount-time validation flaw, and the fix is narrow but important: reject filesystems that combine bigalloc with a nonzero s_first_data_block. In plain terms, ext4 already does not support that geometry, so the kernel now refuses to mount...